CVE-2024-49935 (GCVE-0-2024-49935)
Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:42
VLAI
EPSS
VEX
Title
ACPI: PAD: fix crash in exit_round_robin()
Summary
In the Linux kernel, the following vulnerability has been resolved:
ACPI: PAD: fix crash in exit_round_robin()
The kernel occasionally crashes in cpumask_clear_cpu(), which is called
within exit_round_robin(), because when executing clear_bit(nr, addr) with
nr set to 0xffffffff, the address calculation may cause misalignment within
the memory, leading to access to an invalid memory address.
----------
BUG: unable to handle kernel paging request at ffffffffe0740618
...
CPU: 3 PID: 2919323 Comm: acpi_pad/14 Kdump: loaded Tainted: G OE X --------- - - 4.18.0-425.19.2.el8_7.x86_64 #1
...
RIP: 0010:power_saving_thread+0x313/0x411 [acpi_pad]
Code: 89 cd 48 89 d3 eb d1 48 c7 c7 55 70 72 c0 e8 64 86 b0 e4 c6 05 0d a1 02 00 01 e9 bc fd ff ff 45 89 e4 42 8b 04 a5 20 82 72 c0 <f0> 48 0f b3 05 f4 9c 01 00 42 c7 04 a5 20 82 72 c0 ff ff ff ff 31
RSP: 0018:ff72a5d51fa77ec8 EFLAGS: 00010202
RAX: 00000000ffffffff RBX: ff462981e5d8cb80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246
RBP: ff46297556959d80 R08: 0000000000000382 R09: ff46297c8d0f38d8
R10: 0000000000000000 R11: 0000000000000001 R12: 000000000000000e
R13: 0000000000000000 R14: ffffffffffffffff R15: 000000000000000e
FS: 0000000000000000(0000) GS:ff46297a800c0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffe0740618 CR3: 0000007e20410004 CR4: 0000000000771ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
? acpi_pad_add+0x120/0x120 [acpi_pad]
kthread+0x10b/0x130
? set_kthread_struct+0x50/0x50
ret_from_fork+0x1f/0x40
...
CR2: ffffffffe0740618
crash> dis -lr ffffffffc0726923
...
/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 114
0xffffffffc0726918 <power_saving_thread+776>: mov %r12d,%r12d
/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 325
0xffffffffc072691b <power_saving_thread+779>: mov -0x3f8d7de0(,%r12,4),%eax
/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./arch/x86/include/asm/bitops.h: 80
0xffffffffc0726923 <power_saving_thread+787>: lock btr %rax,0x19cf4(%rip) # 0xffffffffc0740620 <pad_busy_cpus_bits>
crash> px tsk_in_cpu[14]
$66 = 0xffffffff
crash> px 0xffffffffc072692c+0x19cf4
$99 = 0xffffffffc0740620
crash> sym 0xffffffffc0740620
ffffffffc0740620 (b) pad_busy_cpus_bits [acpi_pad]
crash> px pad_busy_cpus_bits[0]
$42 = 0xfffc0
----------
To fix this, ensure that tsk_in_cpu[tsk_index] != -1 before calling
cpumask_clear_cpu() in exit_round_robin(), just as it is done in
round_robin_cpu().
[ rjw: Subject edit, avoid updates to the same value ]
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:38 UTC
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d , < 82191a21a0dedc8c64e14f07f5d568d09bc4b331
(git)
Affected: 8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d , < d214ffa6eb39c08d18a460124dd7ba318dc56f33 (git) Affected: 8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d , < 92e5661b7d0727ab912b76625a88b33fdb9b609a (git) Affected: 8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d , < 68a599da16ebad442ce295d8d2d5c488e3992822 (git) Affected: 8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d , < 68a8e45743d6a120f863fb14b72dc59616597019 (git) Affected: 8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d , < 03593dbb0b272ef7b0358b099841e65735422aca (git) Affected: 8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d , < 27c045f868f0e5052c6b532868a65e0cd250c8fc (git) Affected: 8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d , < 0a2ed70a549e61c5181bad5db418d223b68ae932 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.32
Unaffected: 0 , < 2.6.32 (semver) Unaffected: 5.4.296 , ≤ 5.4.* (semver) Unaffected: 5.10.240 , ≤ 5.10.* (semver) Unaffected: 5.15.168 , ≤ 5.15.* (semver) Unaffected: 6.1.113 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: PAD: fix crash in exit_round_robin()\n\nThe kernel occasionally crashes in cpumask_clear_cpu(), which is called\nwithin exit_round_robin(), because when executing clear_bit(nr, addr) with\nnr set to 0xffffffff, the address calculation may cause misalignment within\nthe memory, leading to access to an invalid memory address.\n\n----------\nBUG: unable to handle kernel paging request at ffffffffe0740618\n ...\nCPU: 3 PID: 2919323 Comm: acpi_pad/14 Kdump: loaded Tainted: G OE X --------- - - 4.18.0-425.19.2.el8_7.x86_64 #1\n ...\nRIP: 0010:power_saving_thread+0x313/0x411 [acpi_pad]\nCode: 89 cd 48 89 d3 eb d1 48 c7 c7 55 70 72 c0 e8 64 86 b0 e4 c6 05 0d a1 02 00 01 e9 bc fd ff ff 45 89 e4 42 8b 04 a5 20 82 72 c0 \u003cf0\u003e 48 0f b3 05 f4 9c 01 00 42 c7 04 a5 20 82 72 c0 ff ff ff ff 31\nRSP: 0018:ff72a5d51fa77ec8 EFLAGS: 00010202\nRAX: 00000000ffffffff RBX: ff462981e5d8cb80 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\nRBP: ff46297556959d80 R08: 0000000000000382 R09: ff46297c8d0f38d8\nR10: 0000000000000000 R11: 0000000000000001 R12: 000000000000000e\nR13: 0000000000000000 R14: ffffffffffffffff R15: 000000000000000e\nFS: 0000000000000000(0000) GS:ff46297a800c0000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: ffffffffe0740618 CR3: 0000007e20410004 CR4: 0000000000771ee0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n ? acpi_pad_add+0x120/0x120 [acpi_pad]\n kthread+0x10b/0x130\n ? set_kthread_struct+0x50/0x50\n ret_from_fork+0x1f/0x40\n ...\nCR2: ffffffffe0740618\n\ncrash\u003e dis -lr ffffffffc0726923\n ...\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 114\n0xffffffffc0726918 \u003cpower_saving_thread+776\u003e:\tmov %r12d,%r12d\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 325\n0xffffffffc072691b \u003cpower_saving_thread+779\u003e:\tmov -0x3f8d7de0(,%r12,4),%eax\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./arch/x86/include/asm/bitops.h: 80\n0xffffffffc0726923 \u003cpower_saving_thread+787\u003e:\tlock btr %rax,0x19cf4(%rip) # 0xffffffffc0740620 \u003cpad_busy_cpus_bits\u003e\n\ncrash\u003e px tsk_in_cpu[14]\n$66 = 0xffffffff\n\ncrash\u003e px 0xffffffffc072692c+0x19cf4\n$99 = 0xffffffffc0740620\n\ncrash\u003e sym 0xffffffffc0740620\nffffffffc0740620 (b) pad_busy_cpus_bits [acpi_pad]\n\ncrash\u003e px pad_busy_cpus_bits[0]\n$42 = 0xfffc0\n----------\n\nTo fix this, ensure that tsk_in_cpu[tsk_index] != -1 before calling\ncpumask_clear_cpu() in exit_round_robin(), just as it is done in\nround_robin_cpu().\n\n[ rjw: Subject edit, avoid updates to the same value ]"
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"state": "PUBLISHED"
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"date": "2026-09-16",
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"fkie_nvd": {
"configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"5.15.168\", \"matchCriteriaId\": \"F032D82B-5582-4DF5-B921-BFE0BD301364\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.113\", \"matchCriteriaId\": \"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.55\", \"matchCriteriaId\": \"E90B9576-56C4-47BC-AAB0-C5B2D438F5D0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.10.14\", \"matchCriteriaId\": \"4C16BCE0-FFA0-4599-BE0A-1FD65101C021\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.11\", \"versionEndExcluding\": \"6.11.3\", \"matchCriteriaId\": \"54D9C704-D679-41A7-9C40-10A6B1E7FFE9\"}]}]}]",
"descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nACPI: PAD: fix crash in exit_round_robin()\\n\\nThe kernel occasionally crashes in cpumask_clear_cpu(), which is called\\nwithin exit_round_robin(), because when executing clear_bit(nr, addr) with\\nnr set to 0xffffffff, the address calculation may cause misalignment within\\nthe memory, leading to access to an invalid memory address.\\n\\n----------\\nBUG: unable to handle kernel paging request at ffffffffe0740618\\n ...\\nCPU: 3 PID: 2919323 Comm: acpi_pad/14 Kdump: loaded Tainted: G OE X --------- - - 4.18.0-425.19.2.el8_7.x86_64 #1\\n ...\\nRIP: 0010:power_saving_thread+0x313/0x411 [acpi_pad]\\nCode: 89 cd 48 89 d3 eb d1 48 c7 c7 55 70 72 c0 e8 64 86 b0 e4 c6 05 0d a1 02 00 01 e9 bc fd ff ff 45 89 e4 42 8b 04 a5 20 82 72 c0 \u003cf0\u003e 48 0f b3 05 f4 9c 01 00 42 c7 04 a5 20 82 72 c0 ff ff ff ff 31\\nRSP: 0018:ff72a5d51fa77ec8 EFLAGS: 00010202\\nRAX: 00000000ffffffff RBX: ff462981e5d8cb80 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\\nRBP: ff46297556959d80 R08: 0000000000000382 R09: ff46297c8d0f38d8\\nR10: 0000000000000000 R11: 0000000000000001 R12: 000000000000000e\\nR13: 0000000000000000 R14: ffffffffffffffff R15: 000000000000000e\\nFS: 0000000000000000(0000) GS:ff46297a800c0000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: ffffffffe0740618 CR3: 0000007e20410004 CR4: 0000000000771ee0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n ? acpi_pad_add+0x120/0x120 [acpi_pad]\\n kthread+0x10b/0x130\\n ? set_kthread_struct+0x50/0x50\\n ret_from_fork+0x1f/0x40\\n ...\\nCR2: ffffffffe0740618\\n\\ncrash\u003e dis -lr ffffffffc0726923\\n ...\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 114\\n0xffffffffc0726918 \u003cpower_saving_thread+776\u003e:\\tmov %r12d,%r12d\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 325\\n0xffffffffc072691b \u003cpower_saving_thread+779\u003e:\\tmov -0x3f8d7de0(,%r12,4),%eax\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./arch/x86/include/asm/bitops.h: 80\\n0xffffffffc0726923 \u003cpower_saving_thread+787\u003e:\\tlock btr %rax,0x19cf4(%rip) # 0xffffffffc0740620 \u003cpad_busy_cpus_bits\u003e\\n\\ncrash\u003e px tsk_in_cpu[14]\\n$66 = 0xffffffff\\n\\ncrash\u003e px 0xffffffffc072692c+0x19cf4\\n$99 = 0xffffffffc0740620\\n\\ncrash\u003e sym 0xffffffffc0740620\\nffffffffc0740620 (b) pad_busy_cpus_bits [acpi_pad]\\n\\ncrash\u003e px pad_busy_cpus_bits[0]\\n$42 = 0xfffc0\\n----------\\n\\nTo fix this, ensure that tsk_in_cpu[tsk_index] != -1 before calling\\ncpumask_clear_cpu() in exit_round_robin(), just as it is done in\\nround_robin_cpu().\\n\\n[ rjw: Subject edit, avoid updates to the same value ]\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: PAD: corrige fallo en exit_round_robin() El kernel ocasionalmente fallo en cpumask_clear_cpu(), que se llama dentro de exit_round_robin(), porque al ejecutar clear_bit(nr, addr) con nr establecido en 0xffffffff, el c\\u00e1lculo de la direcci\\u00f3n puede causar una desalineaci\\u00f3n dentro de la memoria, lo que lleva al acceso a una direcci\\u00f3n de memoria no v\\u00e1lida. ---------- ERROR: no se puede manejar la solicitud de paginaci\\u00f3n del n\\u00facleo en ffffffffe0740618 ... CPU: 3 PID: 2919323 Comm: acpi_pad/14 Kdump: cargado Tainted: G OE X --------- - - 4.18.0-425.19.2.el8_7.x86_64 #1 ... RIP: 0010:power_saving_thread+0x313/0x411 [acpi_pad] C\\u00f3digo: 89 cd 48 89 d3 eb d1 48 c7 c7 55 70 72 c0 e8 64 86 b0 e4 c6 05 0d a1 02 00 01 e9 bc fd ff ff 45 89 e4 42 8b 04 a5 20 82 72 c0 48 0f b3 05 f4 9c 01 00 42 c7 04 a5 20 82 72 c0 ff ff ff ff 31 RSP: 0018:ff72a5d51fa77ec8 EFLAGS: 00010202 RAX: 00000000ffffffff RBX: ff462981e5d8cb80 RCX: 000000000000000 RDX: 000000000000000 RSI: 0000000000000246 RDI: 0000000000000246 RBP: ff46297556959d80 R08: 0000000000000382 R09: ff46297c8d0f38d8 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000e R13: 0000000000000000 R1 4: ffffffffffffffff R15: 000000000000000e FS: 0000000000000000(0000) GS:ff46297a800c0000(0000) knlGS:00000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffe0740618 CR3: 0000007e20410004 CR4: 0000000000771ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Rastreo de llamadas: ? acpi_pad_add+0x120/0x120 [acpi_pad] kthread+0x10b/0x130 ? set_kthread_struct+0x50/0x50 ret_from_fork+0x1f/0x40 ... CR2: ffffffffe0740618 crash\u0026gt; dis -lr ffffffffc0726923 ... /usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 114 0xffffffffc0726918 : mov %r12d,%r12d /usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 325 0xffffffffc072691b : mov -0x3f8d7de0(,%r12,4),%eax /usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./arch/x86/include/asm/bitops.h: 80 0xffffffffc0726923 : crash btr %rax,0x19cf4(%rip) # 0xffffffffc0740620 crash\u0026gt; px tsk_in_cpu[14] $66 = 0xffffffff crash\u0026gt; px 0xffffffffc072692c+0x19cf4 $99 = 0xffffffffc0740620 crash\u0026gt; sym 0xffffffffc0740620 ffffffffc0740620 (b) pad_busy_cpus_bits [acpi_pad] crash\u0026gt; px pad_busy_cpus_bits[0] $42 = 0xfffc0 ---------- Para solucionar esto, aseg\\u00farese de que tsk_in_cpu[tsk_index] != -1 antes de llamar cpumask_clear_cpu() en exit_round_robin(), tal como se hace en round_robin_cpu(). [ rjw: Edici\\u00f3n del tema, evitar actualizaciones al mismo valor ]\"}]",
"id": "CVE-2024-49935",
"lastModified": "2024-11-13T15:21:55.297",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
"published": "2024-10-21T18:15:15.350",
"references": "[{\"url\": \"https://git.kernel.org/stable/c/03593dbb0b272ef7b0358b099841e65735422aca\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/0a2ed70a549e61c5181bad5db418d223b68ae932\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/27c045f868f0e5052c6b532868a65e0cd250c8fc\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/68a599da16ebad442ce295d8d2d5c488e3992822\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/68a8e45743d6a120f863fb14b72dc59616597019\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/92e5661b7d0727ab912b76625a88b33fdb9b609a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
},
"microsoft_vex": {
"current_release_date": "2026-02-18T14:07:21.000Z",
"cve": "CVE-2024-49935",
"id": "msrc_CVE-2024-49935",
"initial_release_date": "2024-10-01T07:00:00.000Z",
"product_status:fixed": "3",
"product_status:known_affected": "3",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "ACPI: PAD: fix crash in exit_round_robin()",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-49935.json",
"version": "2"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2024-49935\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-21T18:15:15.350\",\"lastModified\":\"2026-06-17T08:00:46.063\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nACPI: PAD: fix crash in exit_round_robin()\\n\\nThe kernel occasionally crashes in cpumask_clear_cpu(), which is called\\nwithin exit_round_robin(), because when executing clear_bit(nr, addr) with\\nnr set to 0xffffffff, the address calculation may cause misalignment within\\nthe memory, leading to access to an invalid memory address.\\n\\n----------\\nBUG: unable to handle kernel paging request at ffffffffe0740618\\n ...\\nCPU: 3 PID: 2919323 Comm: acpi_pad/14 Kdump: loaded Tainted: G OE X --------- - - 4.18.0-425.19.2.el8_7.x86_64 #1\\n ...\\nRIP: 0010:power_saving_thread+0x313/0x411 [acpi_pad]\\nCode: 89 cd 48 89 d3 eb d1 48 c7 c7 55 70 72 c0 e8 64 86 b0 e4 c6 05 0d a1 02 00 01 e9 bc fd ff ff 45 89 e4 42 8b 04 a5 20 82 72 c0 \u003cf0\u003e 48 0f b3 05 f4 9c 01 00 42 c7 04 a5 20 82 72 c0 ff ff ff ff 31\\nRSP: 0018:ff72a5d51fa77ec8 EFLAGS: 00010202\\nRAX: 00000000ffffffff RBX: ff462981e5d8cb80 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\\nRBP: ff46297556959d80 R08: 0000000000000382 R09: ff46297c8d0f38d8\\nR10: 0000000000000000 R11: 0000000000000001 R12: 000000000000000e\\nR13: 0000000000000000 R14: ffffffffffffffff R15: 000000000000000e\\nFS: 0000000000000000(0000) GS:ff46297a800c0000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: ffffffffe0740618 CR3: 0000007e20410004 CR4: 0000000000771ee0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n ? acpi_pad_add+0x120/0x120 [acpi_pad]\\n kthread+0x10b/0x130\\n ? set_kthread_struct+0x50/0x50\\n ret_from_fork+0x1f/0x40\\n ...\\nCR2: ffffffffe0740618\\n\\ncrash\u003e dis -lr ffffffffc0726923\\n ...\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 114\\n0xffffffffc0726918 \u003cpower_saving_thread+776\u003e:\\tmov %r12d,%r12d\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 325\\n0xffffffffc072691b \u003cpower_saving_thread+779\u003e:\\tmov -0x3f8d7de0(,%r12,4),%eax\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./arch/x86/include/asm/bitops.h: 80\\n0xffffffffc0726923 \u003cpower_saving_thread+787\u003e:\\tlock btr %rax,0x19cf4(%rip) # 0xffffffffc0740620 \u003cpad_busy_cpus_bits\u003e\\n\\ncrash\u003e px tsk_in_cpu[14]\\n$66 = 0xffffffff\\n\\ncrash\u003e px 0xffffffffc072692c+0x19cf4\\n$99 = 0xffffffffc0740620\\n\\ncrash\u003e sym 0xffffffffc0740620\\nffffffffc0740620 (b) pad_busy_cpus_bits [acpi_pad]\\n\\ncrash\u003e px pad_busy_cpus_bits[0]\\n$42 = 0xfffc0\\n----------\\n\\nTo fix this, ensure that tsk_in_cpu[tsk_index] != -1 before calling\\ncpumask_clear_cpu() in exit_round_robin(), just as it is done in\\nround_robin_cpu().\\n\\n[ rjw: Subject edit, avoid updates to the same value ]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: PAD: corrige fallo en exit_round_robin() El kernel ocasionalmente fallo en cpumask_clear_cpu(), que se llama dentro de exit_round_robin(), porque al ejecutar clear_bit(nr, addr) con nr establecido en 0xffffffff, el c\u00e1lculo de la direcci\u00f3n puede causar una desalineaci\u00f3n dentro de la memoria, lo que lleva al acceso a una direcci\u00f3n de memoria no v\u00e1lida. ---------- ERROR: no se puede manejar la solicitud de paginaci\u00f3n del n\u00facleo en ffffffffe0740618 ... CPU: 3 PID: 2919323 Comm: acpi_pad/14 Kdump: cargado Tainted: G OE X --------- - - 4.18.0-425.19.2.el8_7.x86_64 #1 ... RIP: 0010:power_saving_thread+0x313/0x411 [acpi_pad] C\u00f3digo: 89 cd 48 89 d3 eb d1 48 c7 c7 55 70 72 c0 e8 64 86 b0 e4 c6 05 0d a1 02 00 01 e9 bc fd ff ff 45 89 e4 42 8b 04 a5 20 82 72 c0 48 0f b3 05 f4 9c 01 00 42 c7 04 a5 20 82 72 c0 ff ff ff ff 31 RSP: 0018:ff72a5d51fa77ec8 EFLAGS: 00010202 RAX: 00000000ffffffff RBX: ff462981e5d8cb80 RCX: 000000000000000 RDX: 000000000000000 RSI: 0000000000000246 RDI: 0000000000000246 RBP: ff46297556959d80 R08: 0000000000000382 R09: ff46297c8d0f38d8 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000e R13: 0000000000000000 R1 4: ffffffffffffffff R15: 000000000000000e FS: 0000000000000000(0000) GS:ff46297a800c0000(0000) knlGS:00000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffe0740618 CR3: 0000007e20410004 CR4: 0000000000771ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Rastreo de llamadas: ? acpi_pad_add+0x120/0x120 [acpi_pad] kthread+0x10b/0x130 ? set_kthread_struct+0x50/0x50 ret_from_fork+0x1f/0x40 ... CR2: ffffffffe0740618 crash\u0026gt; dis -lr ffffffffc0726923 ... /usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 114 0xffffffffc0726918 : mov %r12d,%r12d /usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 325 0xffffffffc072691b : mov -0x3f8d7de0(,%r12,4),%eax /usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./arch/x86/include/asm/bitops.h: 80 0xffffffffc0726923 : crash btr %rax,0x19cf4(%rip) # 0xffffffffc0740620 crash\u0026gt; px tsk_in_cpu[14] $66 = 0xffffffff crash\u0026gt; px 0xffffffffc072692c+0x19cf4 $99 = 0xffffffffc0740620 crash\u0026gt; sym 0xffffffffc0740620 ffffffffc0740620 (b) pad_busy_cpus_bits [acpi_pad] crash\u0026gt; px pad_busy_cpus_bits[0] $42 = 0xfffc0 ---------- Para solucionar esto, aseg\u00farese de que tsk_in_cpu[tsk_index] != -1 antes de llamar cpumask_clear_cpu() en exit_round_robin(), tal como se hace en round_robin_cpu(). [ rjw: Edici\u00f3n del tema, evitar actualizaciones al mismo valor ]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/acpi/acpi_pad.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\",\"lessThan\":\"82191a21a0dedc8c64e14f07f5d568d09bc4b331\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\",\"lessThan\":\"d214ffa6eb39c08d18a460124dd7ba318dc56f33\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\",\"lessThan\":\"92e5661b7d0727ab912b76625a88b33fdb9b609a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\",\"lessThan\":\"68a599da16ebad442ce295d8d2d5c488e3992822\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\",\"lessThan\":\"68a8e45743d6a120f863fb14b72dc59616597019\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\",\"lessThan\":\"03593dbb0b272ef7b0358b099841e65735422aca\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\",\"lessThan\":\"27c045f868f0e5052c6b532868a65e0cd250c8fc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\",\"lessThan\":\"0a2ed70a549e61c5181bad5db418d223b68ae932\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/acpi/acpi_pad.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.32\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.32\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.296\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.240\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.168\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.113\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.55\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10.14\",\"lessThanOrEqual\":\"6.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.3\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-10-22T13:38:31.252329Z\",\"id\":\"CVE-2024-49935\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.15.168\",\"matchCriteriaId\":\"F032D82B-5582-4DF5-B921-BFE0BD301364\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.113\",\"matchCriteriaId\":\"D01BD22E-ACD1-4618-9D01-6116570BE1EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.55\",\"matchCriteriaId\":\"E90B9576-56C4-47BC-AAB0-C5B2D438F5D0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.14\",\"matchCriteriaId\":\"4C16BCE0-FFA0-4599-BE0A-1FD65101C021\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.3\",\"matchCriteriaId\":\"54D9C704-D679-41A7-9C40-10A6B1E7FFE9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/03593dbb0b272ef7b0358b099841e65735422aca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0a2ed70a549e61c5181bad5db418d223b68ae932\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/27c045f868f0e5052c6b532868a65e0cd250c8fc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/68a599da16ebad442ce295d8d2d5c488e3992822\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/68a8e45743d6a120f863fb14b72dc59616597019\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/82191a21a0dedc8c64e14f07f5d568d09bc4b331\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/92e5661b7d0727ab912b76625a88b33fdb9b609a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d214ffa6eb39c08d18a460124dd7ba318dc56f33\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T08:07:49+00:00",
"cve": "CVE-2024-49935",
"id": "CVE-2024-49935",
"initial_release_date": "2024-10-21T00:00:00+00:00",
"product_status:fixed": "305",
"product_status:known_affected": "64",
"product_status:known_not_affected": "48",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ACPI: PAD: fix crash in exit_round_robin()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-49935.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T00:29:26Z",
"cve": "CVE-2024-49935",
"id": "CVE-2024-49935",
"initial_release_date": "2024-10-26T03:01:53Z",
"product_status:known_affected": "667",
"product_status:known_not_affected": "10",
"product_status:recommended": "719",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2024-49935",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-49935.json",
"version": "70"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:23:19.179Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49935\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:38:31.252329Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:38:34.512Z\"}}], \"cna\": {\"title\": \"ACPI: PAD: fix crash in exit_round_robin()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\", \"lessThan\": \"82191a21a0dedc8c64e14f07f5d568d09bc4b331\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\", \"lessThan\": \"d214ffa6eb39c08d18a460124dd7ba318dc56f33\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\", \"lessThan\": \"92e5661b7d0727ab912b76625a88b33fdb9b609a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\", \"lessThan\": \"68a599da16ebad442ce295d8d2d5c488e3992822\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\", \"lessThan\": \"68a8e45743d6a120f863fb14b72dc59616597019\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\", \"lessThan\": \"03593dbb0b272ef7b0358b099841e65735422aca\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\", \"lessThan\": \"27c045f868f0e5052c6b532868a65e0cd250c8fc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8e0af5141ab950b78b3ebbfaded5439dcf8b3a8d\", \"lessThan\": \"0a2ed70a549e61c5181bad5db418d223b68ae932\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/acpi/acpi_pad.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.32\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.32\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.296\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.240\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.55\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/acpi/acpi_pad.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/82191a21a0dedc8c64e14f07f5d568d09bc4b331\"}, {\"url\": \"https://git.kernel.org/stable/c/d214ffa6eb39c08d18a460124dd7ba318dc56f33\"}, {\"url\": \"https://git.kernel.org/stable/c/92e5661b7d0727ab912b76625a88b33fdb9b609a\"}, {\"url\": \"https://git.kernel.org/stable/c/68a599da16ebad442ce295d8d2d5c488e3992822\"}, {\"url\": \"https://git.kernel.org/stable/c/68a8e45743d6a120f863fb14b72dc59616597019\"}, {\"url\": \"https://git.kernel.org/stable/c/03593dbb0b272ef7b0358b099841e65735422aca\"}, {\"url\": \"https://git.kernel.org/stable/c/27c045f868f0e5052c6b532868a65e0cd250c8fc\"}, {\"url\": \"https://git.kernel.org/stable/c/0a2ed70a549e61c5181bad5db418d223b68ae932\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nACPI: PAD: fix crash in exit_round_robin()\\n\\nThe kernel occasionally crashes in cpumask_clear_cpu(), which is called\\nwithin exit_round_robin(), because when executing clear_bit(nr, addr) with\\nnr set to 0xffffffff, the address calculation may cause misalignment within\\nthe memory, leading to access to an invalid memory address.\\n\\n----------\\nBUG: unable to handle kernel paging request at ffffffffe0740618\\n ...\\nCPU: 3 PID: 2919323 Comm: acpi_pad/14 Kdump: loaded Tainted: G OE X --------- - - 4.18.0-425.19.2.el8_7.x86_64 #1\\n ...\\nRIP: 0010:power_saving_thread+0x313/0x411 [acpi_pad]\\nCode: 89 cd 48 89 d3 eb d1 48 c7 c7 55 70 72 c0 e8 64 86 b0 e4 c6 05 0d a1 02 00 01 e9 bc fd ff ff 45 89 e4 42 8b 04 a5 20 82 72 c0 \u003cf0\u003e 48 0f b3 05 f4 9c 01 00 42 c7 04 a5 20 82 72 c0 ff ff ff ff 31\\nRSP: 0018:ff72a5d51fa77ec8 EFLAGS: 00010202\\nRAX: 00000000ffffffff RBX: ff462981e5d8cb80 RCX: 0000000000000000\\nRDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\\nRBP: ff46297556959d80 R08: 0000000000000382 R09: ff46297c8d0f38d8\\nR10: 0000000000000000 R11: 0000000000000001 R12: 000000000000000e\\nR13: 0000000000000000 R14: ffffffffffffffff R15: 000000000000000e\\nFS: 0000000000000000(0000) GS:ff46297a800c0000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: ffffffffe0740618 CR3: 0000007e20410004 CR4: 0000000000771ee0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nPKRU: 55555554\\nCall Trace:\\n ? acpi_pad_add+0x120/0x120 [acpi_pad]\\n kthread+0x10b/0x130\\n ? set_kthread_struct+0x50/0x50\\n ret_from_fork+0x1f/0x40\\n ...\\nCR2: ffffffffe0740618\\n\\ncrash\u003e dis -lr ffffffffc0726923\\n ...\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 114\\n0xffffffffc0726918 \u003cpower_saving_thread+776\u003e:\\tmov %r12d,%r12d\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./include/linux/cpumask.h: 325\\n0xffffffffc072691b \u003cpower_saving_thread+779\u003e:\\tmov -0x3f8d7de0(,%r12,4),%eax\\n/usr/src/debug/kernel-4.18.0-425.19.2.el8_7/linux-4.18.0-425.19.2.el8_7.x86_64/./arch/x86/include/asm/bitops.h: 80\\n0xffffffffc0726923 \u003cpower_saving_thread+787\u003e:\\tlock btr %rax,0x19cf4(%rip) # 0xffffffffc0740620 \u003cpad_busy_cpus_bits\u003e\\n\\ncrash\u003e px tsk_in_cpu[14]\\n$66 = 0xffffffff\\n\\ncrash\u003e px 0xffffffffc072692c+0x19cf4\\n$99 = 0xffffffffc0740620\\n\\ncrash\u003e sym 0xffffffffc0740620\\nffffffffc0740620 (b) pad_busy_cpus_bits [acpi_pad]\\n\\ncrash\u003e px pad_busy_cpus_bits[0]\\n$42 = 0xfffc0\\n----------\\n\\nTo fix this, ensure that tsk_in_cpu[tsk_index] != -1 before calling\\ncpumask_clear_cpu() in exit_round_robin(), just as it is done in\\nround_robin_cpu().\\n\\n[ rjw: Subject edit, avoid updates to the same value ]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.296\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.240\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.55\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.14\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.3\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"2.6.32\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:42:16.304Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-49935\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:42:16.304Z\", \"dateReserved\": \"2024-10-21T12:17:06.042Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:01:56.404Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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