Vulnerability-Lookup

RHSA-2025:1067

Vulnerability from csaf_redhat - Published: 2025-02-05 11:21 - Updated: 2026-09-28 06:16

Summary

Red Hat Security Advisory: kernel-rt security update

Severity

Moderate

Notes

Topic: An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: scsi: core: Fix unremoved procfs host directory regression (CVE-2024-26935) * kernel: arm64/sve: Discard stale CPU state when handling SVE traps (CVE-2024-50275) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2024-26935

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix unremoved procfs host directory regression The Linux kernel CVE team has assigned CVE-2024-26935 to this issue. Upstream advisory: https://lore.kernel.org/linux-cve-announce/2024050124-CVE-2024-26935-8b4e@gregkh/T

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Fixed 30 products

Product	Version	Remediation
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-553.37.1.rt7.378.el8_10.src	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-core-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-core-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-debuginfo-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-devel-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-kvm-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-modules-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debug-modules-extra-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debuginfo-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-devel-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-kvm-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-modules-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: NFV-8.10.0.Z.MAIN.EUS:kernel-rt-modules-extra-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-553.37.1.rt7.378.el8_10.src	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-core-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-core-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-debuginfo-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-devel-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-modules-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debug-modules-extra-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debuginfo-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-devel-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-modules-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix
Unresolved product id: RT-8.10.0.Z.MAIN.EUS:kernel-rt-modules-extra-0:4.18.0-553.37.1.rt7.378.el8_10.x86_64	—	Vendor Fix fix

Threats

Impact Low

CVE-2024-50275

A flaw was found in the Linux kernel. A race condition in the 64-bit ARM (arm64) architecture's handling of Scalable Vector Extension (SVE) traps can allow stale processor register states to be reused. A local user can trigger this flaw through specific task preemption timing to access sensitive data or cause a denial of service (DoS). This issue occurs because the kernel fails to properly invalidate saved floating-point context, allowing outdated processor state to persist upon returning to user space.

6.3 (Medium)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE-99 - Improper Control of Resource Identifiers ('Resource Injection')

Affected products

Fixed 30 products, the same list as for CVE-2024-26935

Threats

Impact Moderate

References

15 references

URL	Category
https://access.redhat.com/errata/RHSA-2025:1067	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=2278235	external
https://bugzilla.redhat.com/show_bug.cgi?id=2327198	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2024-26935	self
https://bugzilla.redhat.com/show_bug.cgi?id=2278235	external
https://www.cve.org/CVERecord?id=CVE-2024-26935	external
https://nvd.nist.gov/vuln/detail/CVE-2024-26935	external
https://lore.kernel.org/linux-cve-announce/202405…	external
https://access.redhat.com/security/cve/CVE-2024-50275	self
https://bugzilla.redhat.com/show_bug.cgi?id=2327198	external
https://www.cve.org/CVERecord?id=CVE-2024-50275	external
https://nvd.nist.gov/vuln/detail/CVE-2024-50275	external
https://lore.kernel.org/linux-cve-announce/202411…	external

JSON

To clipboard

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          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Fix unremoved procfs host directory regression\n\nThe Linux kernel CVE team has assigned CVE-2024-26935 to this issue.\n\nUpstream advisory:\nhttps://lore.kernel.org/linux-cve-announce/2024050124-CVE-2024-26935-8b4e@gregkh/T",
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          "title": "Vulnerability summary"
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          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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CVE-2024-26935 (GCVE-0-2024-26935)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:17 – Updated: 2026-05-23 15:40

Title

scsi: core: Fix unremoved procfs host directory regression

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix unremoved procfs host directory regression Commit fc663711b944 ("scsi: core: Remove the /proc/scsi/${proc_name} directory earlier") fixed a bug related to modules loading/unloading, by adding a call to scsi_proc_hostdir_rm() on scsi_remove_host(). But that led to a potential duplicate call to the hostdir_rm() routine, since it's also called from scsi_host_dev_release(). That triggered a regression report, which was then fixed by commit be03df3d4bfe ("scsi: core: Fix a procfs host directory removal regression"). The fix just dropped the hostdir_rm() call from dev_release(). But it happens that this proc directory is created on scsi_host_alloc(), and that function "pairs" with scsi_host_dev_release(), while scsi_remove_host() pairs with scsi_add_host(). In other words, it seems the reason for removing the proc directory on dev_release() was meant to cover cases in which a SCSI host structure was allocated, but the call to scsi_add_host() didn't happen. And that pattern happens to exist in some error paths, for example. Syzkaller causes that by using USB raw gadget device, error'ing on usb-storage driver, at usb_stor_probe2(). By checking that path, we can see that the BadDevice label leads to a scsi_host_put() after a SCSI host allocation, but there's no call to scsi_add_host() in such path. That leads to messages like this in dmesg (and a leak of the SCSI host proc structure): usb-storage 4-1:87.51: USB Mass Storage device detected proc_dir_entry 'scsi/usb-storage' already registered WARNING: CPU: 1 PID: 3519 at fs/proc/generic.c:377 proc_register+0x347/0x4e0 fs/proc/generic.c:376 The proper fix seems to still call scsi_proc_hostdir_rm() on dev_release(), but guard that with the state check for SHOST_CREATED; there is even a comment in scsi_host_dev_release() detailing that: such conditional is meant for cases where the SCSI host was allocated but there was no calls to {add,remove}_host(), like the usb-storage case. This is what we propose here and with that, the error path of usb-storage does not trigger the warning anymore.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-06-21 14:41 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6618 records in the last 180 days details

References

10 references

URL	Tags
https://git.kernel.org/stable/c/0053f15d50d50c931…
https://git.kernel.org/stable/c/5c2386ba80e779a92…
https://git.kernel.org/stable/c/cea234bb214b17d00…
https://git.kernel.org/stable/c/3678cf67ff7136db1…
https://git.kernel.org/stable/c/d4c34782b6d7b1e68…
https://git.kernel.org/stable/c/e293c773c13b830cd…
https://git.kernel.org/stable/c/f4ff08fab66eb5c0b…
https://git.kernel.org/stable/c/f23a4d6e07570826f…
https://lists.debian.org/debian-lts-announce/2024…	x_transferred
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: 88c3d3bb6469cea929ac68fd326bdcbefcdfdd83 , < 0053f15d50d50c9312d8ab9c11e2e405812dfcac (git) Affected: 68c665bb185037e7eb66fb792c61da9d7151e99c , < 5c2386ba80e779a92ec3bb64ccadbedd88f779b1 (git) Affected: 2a764d55e938743efa7c2cba7305633bcf227f09 , < cea234bb214b17d004dfdccce4491e6ff57c96ee (git) Affected: 7e0ae8667fcdd99d1756922e1140cac75f5fa279 , < 3678cf67ff7136db1dd3bf63c361650db5d92889 (git) Affected: be03df3d4bfe7e8866d4aa43d62e648ffe884f5f , < d4c34782b6d7b1e68d18d9549451b19433bd4c6c (git) Affected: be03df3d4bfe7e8866d4aa43d62e648ffe884f5f , < e293c773c13b830cdc251f155df2254981abc320 (git) Affected: be03df3d4bfe7e8866d4aa43d62e648ffe884f5f , < f4ff08fab66eb5c0b97e1a24edac052fb40bf5d7 (git) Affected: be03df3d4bfe7e8866d4aa43d62e648ffe884f5f , < f23a4d6e07570826fe95023ca1aa96a011fa9f84 (git) Affected: 73f030d4ef6d1ad17f824a0a2eb637ef7a9c7d51 (git) Affected: 5.4.238 , < 5.4.274 (semver) Affected: 5.10.176 , < 5.10.215 (semver) Affected: 5.15.104 , < 5.15.154 (semver) Affected: 6.1.21 , < 6.1.84 (semver) Affected: 6.2.8 , < 6.3 (semver)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 5.4.274 , ≤ 5.4.* (semver) Unaffected: 5.10.215 , ≤ 5.10.* (semver) Unaffected: 5.15.154 , ≤ 5.15.* (semver) Unaffected: 6.1.84 , ≤ 6.1.* (semver) Unaffected: 6.6.24 , ≤ 6.6.* (semver) Unaffected: 6.7.12 , ≤ 6.7.* (semver) Unaffected: 6.8.3 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < * (custom)

Show details on NVD website

JSON

To clipboard

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CVE-2024-50275 (GCVE-0-2024-50275)

Vulnerability from cvelistv5 – Published: 2024-11-19 01:30 – Updated: 2026-08-05 11:42

Title

arm64/sve: Discard stale CPU state when handling SVE traps

Summary

In the Linux kernel, the following vulnerability has been resolved: arm64/sve: Discard stale CPU state when handling SVE traps The logic for handling SVE traps manipulates saved FPSIMD/SVE state incorrectly, and a race with preemption can result in a task having TIF_SVE set and TIF_FOREIGN_FPSTATE clear even though the live CPU state is stale (e.g. with SVE traps enabled). This has been observed to result in warnings from do_sve_acc() where SVE traps are not expected while TIF_SVE is set: | if (test_and_set_thread_flag(TIF_SVE)) | WARN_ON(1); /* SVE access shouldn't have trapped */ Warnings of this form have been reported intermittently, e.g. https://lore.kernel.org/linux-arm-kernel/CA+G9fYtEGe_DhY2Ms7+L7NKsLYUomGsgqpdBj+QwDLeSg=JhGg@mail.gmail.com/ https://lore.kernel.org/linux-arm-kernel/000000000000511e9a060ce5a45c@google.com/ The race can occur when the SVE trap handler is preempted before and after manipulating the saved FPSIMD/SVE state, starting and ending on the same CPU, e.g. | void do_sve_acc(unsigned long esr, struct pt_regs *regs) | { | // Trap on CPU 0 with TIF_SVE clear, SVE traps enabled | // task->fpsimd_cpu is 0. | // per_cpu_ptr(&fpsimd_last_state, 0) is task. | | ... | | // Preempted; migrated from CPU 0 to CPU 1. | // TIF_FOREIGN_FPSTATE is set. | | get_cpu_fpsimd_context(); | | if (test_and_set_thread_flag(TIF_SVE)) | WARN_ON(1); /* SVE access shouldn't have trapped */ | | sve_init_regs() { | if (!test_thread_flag(TIF_FOREIGN_FPSTATE)) { | ... | } else { | fpsimd_to_sve(current); | current->thread.fp_type = FP_STATE_SVE; | } | } | | put_cpu_fpsimd_context(); | | // Preempted; migrated from CPU 1 to CPU 0. | // task->fpsimd_cpu is still 0 | // If per_cpu_ptr(&fpsimd_last_state, 0) is still task then: | // - Stale HW state is reused (with SVE traps enabled) | // - TIF_FOREIGN_FPSTATE is cleared | // - A return to userspace skips HW state restore | } Fix the case where the state is not live and TIF_FOREIGN_FPSTATE is set by calling fpsimd_flush_task_state() to detach from the saved CPU state. This ensures that a subsequent context switch will not reuse the stale CPU state, and will instead set TIF_FOREIGN_FPSTATE, forcing the new state to be reloaded from memory prior to a return to userspace.

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6618 records in the last 180 days details

References

6 references

URL	Tags
https://git.kernel.org/stable/c/51d3d80a6dc314982…
https://git.kernel.org/stable/c/de529504b3274d57c…
https://git.kernel.org/stable/c/51d11ea0250d6ee46…
https://git.kernel.org/stable/c/fa9ce027b3ce37a2b…
https://git.kernel.org/stable/c/751ecf6afd6568adc…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cccb78ce89c45a4414db712be4986edfb92434bd , < 51d3d80a6dc314982a9a0aeb0961085922a1aa15 (git) Affected: cccb78ce89c45a4414db712be4986edfb92434bd , < de529504b3274d57caf8f66800b714b0d3ee235a (git) Affected: cccb78ce89c45a4414db712be4986edfb92434bd , < 51d11ea0250d6ee461987403bbfd4b2abb5613a7 (git) Affected: cccb78ce89c45a4414db712be4986edfb92434bd , < fa9ce027b3ce37a2bb173bf2553b5caa438fd8c9 (git) Affected: cccb78ce89c45a4414db712be4986edfb92434bd , < 751ecf6afd6568adc98f2a6052315552c0483d18 (git)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.174 , ≤ 5.15.* (semver) Unaffected: 6.1.120 , ≤ 6.1.* (semver) Unaffected: 6.6.61 , ≤ 6.6.* (semver) Unaffected: 6.11.8 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64/sve: Discard stale CPU state when handling SVE traps\n\nThe logic for handling SVE traps manipulates saved FPSIMD/SVE state\nincorrectly, and a race with preemption can result in a task having\nTIF_SVE set and TIF_FOREIGN_FPSTATE clear even though the live CPU state\nis stale (e.g. with SVE traps enabled). This has been observed to result\nin warnings from do_sve_acc() where SVE traps are not expected while\nTIF_SVE is set:\n\n|         if (test_and_set_thread_flag(TIF_SVE))\n|                 WARN_ON(1); /* SVE access shouldn\u0027t have trapped */\n\nWarnings of this form have been reported intermittently, e.g.\n\n  https://lore.kernel.org/linux-arm-kernel/CA+G9fYtEGe_DhY2Ms7+L7NKsLYUomGsgqpdBj+QwDLeSg=JhGg@mail.gmail.com/\n  https://lore.kernel.org/linux-arm-kernel/000000000000511e9a060ce5a45c@google.com/\n\nThe race can occur when the SVE trap handler is preempted before and\nafter manipulating the saved FPSIMD/SVE state, starting and ending on\nthe same CPU, e.g.\n\n| void do_sve_acc(unsigned long esr, struct pt_regs *regs)\n| {\n|         // Trap on CPU 0 with TIF_SVE clear, SVE traps enabled\n|         // task-\u003efpsimd_cpu is 0.\n|         // per_cpu_ptr(\u0026fpsimd_last_state, 0) is task.\n|\n|         ...\n|\n|         // Preempted; migrated from CPU 0 to CPU 1.\n|         // TIF_FOREIGN_FPSTATE is set.\n|\n|         get_cpu_fpsimd_context();\n|\n|         if (test_and_set_thread_flag(TIF_SVE))\n|                 WARN_ON(1); /* SVE access shouldn\u0027t have trapped */\n|\n|         sve_init_regs() {\n|                 if (!test_thread_flag(TIF_FOREIGN_FPSTATE)) {\n|                         ...\n|                 } else {\n|                         fpsimd_to_sve(current);\n|                         current-\u003ethread.fp_type = FP_STATE_SVE;\n|                 }\n|         }\n|\n|         put_cpu_fpsimd_context();\n|\n|         // Preempted; migrated from CPU 1 to CPU 0.\n|         // task-\u003efpsimd_cpu is still 0\n|         // If per_cpu_ptr(\u0026fpsimd_last_state, 0) is still task then:\n|         // - Stale HW state is reused (with SVE traps enabled)\n|         // - TIF_FOREIGN_FPSTATE is cleared\n|         // - A return to userspace skips HW state restore\n| }\n\nFix the case where the state is not live and TIF_FOREIGN_FPSTATE is set\nby calling fpsimd_flush_task_state() to detach from the saved CPU\nstate. This ensures that a subsequent context switch will not reuse the\nstale CPU state, and will instead set TIF_FOREIGN_FPSTATE, forcing the\nnew state to be reloaded from memory prior to a return to userspace."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is the EL0 SVE access trap handler, reached only by a local process on the machine executing an SVE instruction. No network or remote input is involved.\nAC:L - The attacker controls both halves of the race \u2014 both windows around get/put_cpu_fpsimd_context() are fully preemptible, and the attacker can force preemption and CPU0\u2192CPU1\u2192CPU0 migration by oversubscribing a restricted affinity mask, while re-arming the SVE trap indefinitely (any syscall saves state as FPSIMD, clearing TIF_SVE and re-enabling the trap).\nPR:L - Only the ability to run unprivileged code is needed; el0_sve_acc()/do_sve_acc() perform no capability, namespace, or credential check of any kind.\nUI:N - The attacking process triggers the trap and the race entirely on its own; no action by any other user is required.\nS:U - The impact stays within the kernel/OS security authority \u2014 corrupted FP/SVE state tracking and kernel warnings on the same host, with no VM, IOMMU, or hypervisor boundary crossed.\nC:H - Skipping sve_flush_live() leaves SVE predicate registers P0-P15 and FFR from a previously running task\u0027s SVE context in the register file while the kernel treats them as the current task\u0027s live SVE state, so they are saved into thread.sve_state and copied to userspace by preserve_sve_context() (or read via ptrace NT_ARM_SVE) \u2014 a cross-process disclosure of up to 17 \u00d7 VL/8 bytes, ~4 KB on max-VL hardware.\nI:L - Foreign SVE predicate/FFR contents are injected into the task\u0027s architectural state and the correctly converted in-memory state is silently discarded, but the WARN_ON(sve_get_vl() != vl) guard in fpsimd_save_user_state() blocks the mismatched-VL out-of-bounds save, so there is no arbitrary-write or control-flow primitive.\nA:H - The stale state reliably produces the WARN_ON(1) splat in do_sve_acc() \u2014 a kernel panic on the many panic_on_warn deployments (CI, hardened, cloud, Android) \u2014 and the VL-mismatch path additionally force-SIGKILLs the task; an unprivileged user can trigger this in a tight loop."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:42:58.345Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/51d3d80a6dc314982a9a0aeb0961085922a1aa15"
        },
        {
          "url": "https://git.kernel.org/stable/c/de529504b3274d57caf8f66800b714b0d3ee235a"
        },
        {
          "url": "https://git.kernel.org/stable/c/51d11ea0250d6ee461987403bbfd4b2abb5613a7"
        },
        {
          "url": "https://git.kernel.org/stable/c/fa9ce027b3ce37a2bb173bf2553b5caa438fd8c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/751ecf6afd6568adc98f2a6052315552c0483d18"
        }
      ],
      "title": "arm64/sve: Discard stale CPU state when handling SVE traps",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-50275",
    "datePublished": "2024-11-19T01:30:15.293Z",
    "dateReserved": "2024-10-21T19:36:19.983Z",
    "dateUpdated": "2026-08-05T11:42:58.345Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

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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.
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Action not permitted

RHSA-2025:1067

CVE-2024-26935 (GCVE-0-2024-26935)

CVE-2024-50275 (GCVE-0-2024-50275)

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