ghsa-3h89-g9r5-cvx9
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
tracing/osnoise: Use a cpumask to know what threads are kthreads
The start_kthread() and stop_thread() code was not always called with the interface_lock held. This means that the kthread variable could be unexpectedly changed causing the kthread_stop() to be called on it when it should not have been, leading to:
while true; do rtla timerlat top -u -q & PID=$!; sleep 5; kill -INT $PID; sleep 0.001; kill -TERM $PID; wait $PID; done
Causing the following OOPS:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 5 UID: 0 PID: 885 Comm: timerlatu/5 Not tainted 6.11.0-rc4-test-00002-gbc754cc76d1b-dirty #125 a533010b71dab205ad2f507188ce8c82203b0254
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:hrtimer_active+0x58/0x300
Code: 48 c1 ee 03 41 54 48 01 d1 48 01 d6 55 53 48 83 ec 20 80 39 00 0f 85 30 02 00 00 49 8b 6f 30 4c 8d 75 10 4c 89 f0 48 c1 e8 03 <0f> b6 3c 10 4c 89 f0 83 e0 07 83 c0 03 40 38 f8 7c 09 40 84 ff 0f
RSP: 0018:ffff88811d97f940 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffff88823c6b5b28 RCX: ffffed10478d6b6b
RDX: dffffc0000000000 RSI: ffffed10478d6b6c RDI: ffff88823c6b5b28
RBP: 0000000000000000 R08: ffff88823c6b5b58 R09: ffff88823c6b5b60
R10: ffff88811d97f957 R11: 0000000000000010 R12: 00000000000a801d
R13: ffff88810d8b35d8 R14: 0000000000000010 R15: ffff88823c6b5b28
FS: 0000000000000000(0000) GS:ffff88823c680000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561858ad7258 CR3: 000000007729e001 CR4: 0000000000170ef0
Call Trace:
This is because it would mistakenly call kthread_stop() on a user space thread making it "exit" before it actually exits.
Since kthread ---truncated---
{
"affected": [],
"aliases": [
"CVE-2024-46788"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-18T08:15:05Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/osnoise: Use a cpumask to know what threads are kthreads\n\nThe start_kthread() and stop_thread() code was not always called with the\ninterface_lock held. This means that the kthread variable could be\nunexpectedly changed causing the kthread_stop() to be called on it when it\nshould not have been, leading to:\n\n while true; do\n rtla timerlat top -u -q \u0026 PID=$!;\n sleep 5;\n kill -INT $PID;\n sleep 0.001;\n kill -TERM $PID;\n wait $PID;\n done\n\nCausing the following OOPS:\n\n Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN PTI\n KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n CPU: 5 UID: 0 PID: 885 Comm: timerlatu/5 Not tainted 6.11.0-rc4-test-00002-gbc754cc76d1b-dirty #125 a533010b71dab205ad2f507188ce8c82203b0254\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n RIP: 0010:hrtimer_active+0x58/0x300\n Code: 48 c1 ee 03 41 54 48 01 d1 48 01 d6 55 53 48 83 ec 20 80 39 00 0f 85 30 02 00 00 49 8b 6f 30 4c 8d 75 10 4c 89 f0 48 c1 e8 03 \u003c0f\u003e b6 3c 10 4c 89 f0 83 e0 07 83 c0 03 40 38 f8 7c 09 40 84 ff 0f\n RSP: 0018:ffff88811d97f940 EFLAGS: 00010202\n RAX: 0000000000000002 RBX: ffff88823c6b5b28 RCX: ffffed10478d6b6b\n RDX: dffffc0000000000 RSI: ffffed10478d6b6c RDI: ffff88823c6b5b28\n RBP: 0000000000000000 R08: ffff88823c6b5b58 R09: ffff88823c6b5b60\n R10: ffff88811d97f957 R11: 0000000000000010 R12: 00000000000a801d\n R13: ffff88810d8b35d8 R14: 0000000000000010 R15: ffff88823c6b5b28\n FS: 0000000000000000(0000) GS:ffff88823c680000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000561858ad7258 CR3: 000000007729e001 CR4: 0000000000170ef0\n Call Trace:\n \u003cTASK\u003e\n ? die_addr+0x40/0xa0\n ? exc_general_protection+0x154/0x230\n ? asm_exc_general_protection+0x26/0x30\n ? hrtimer_active+0x58/0x300\n ? __pfx_mutex_lock+0x10/0x10\n ? __pfx_locks_remove_file+0x10/0x10\n hrtimer_cancel+0x15/0x40\n timerlat_fd_release+0x8e/0x1f0\n ? security_file_release+0x43/0x80\n __fput+0x372/0xb10\n task_work_run+0x11e/0x1f0\n ? _raw_spin_lock+0x85/0xe0\n ? __pfx_task_work_run+0x10/0x10\n ? poison_slab_object+0x109/0x170\n ? do_exit+0x7a0/0x24b0\n do_exit+0x7bd/0x24b0\n ? __pfx_migrate_enable+0x10/0x10\n ? __pfx_do_exit+0x10/0x10\n ? __pfx_read_tsc+0x10/0x10\n ? ktime_get+0x64/0x140\n ? _raw_spin_lock_irq+0x86/0xe0\n do_group_exit+0xb0/0x220\n get_signal+0x17ba/0x1b50\n ? vfs_read+0x179/0xa40\n ? timerlat_fd_read+0x30b/0x9d0\n ? __pfx_get_signal+0x10/0x10\n ? __pfx_timerlat_fd_read+0x10/0x10\n arch_do_signal_or_restart+0x8c/0x570\n ? __pfx_arch_do_signal_or_restart+0x10/0x10\n ? vfs_read+0x179/0xa40\n ? ksys_read+0xfe/0x1d0\n ? __pfx_ksys_read+0x10/0x10\n syscall_exit_to_user_mode+0xbc/0x130\n do_syscall_64+0x74/0x110\n ? __pfx___rseq_handle_notify_resume+0x10/0x10\n ? __pfx_ksys_read+0x10/0x10\n ? fpregs_restore_userregs+0xdb/0x1e0\n ? fpregs_restore_userregs+0xdb/0x1e0\n ? syscall_exit_to_user_mode+0x116/0x130\n ? do_syscall_64+0x74/0x110\n ? do_syscall_64+0x74/0x110\n ? do_syscall_64+0x74/0x110\n entry_SYSCALL_64_after_hwframe+0x71/0x79\n RIP: 0033:0x7ff0070eca9c\n Code: Unable to access opcode bytes at 0x7ff0070eca72.\n RSP: 002b:00007ff006dff8c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000\n RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007ff0070eca9c\n RDX: 0000000000000400 RSI: 00007ff006dff9a0 RDI: 0000000000000003\n RBP: 00007ff006dffde0 R08: 0000000000000000 R09: 00007ff000000ba0\n R10: 00007ff007004b08 R11: 0000000000000246 R12: 0000000000000003\n R13: 00007ff006dff9a0 R14: 0000000000000007 R15: 0000000000000008\n \u003c/TASK\u003e\n Modules linked in: snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hwdep snd_hda_core\n ---[ end trace 0000000000000000 ]---\n\nThis is because it would mistakenly call kthread_stop() on a user space\nthread making it \"exit\" before it actually exits.\n\nSince kthread\n---truncated---",
"id": "GHSA-3h89-g9r5-cvx9",
"modified": "2024-11-22T21:32:12Z",
"published": "2024-09-18T09:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46788"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/177e1cc2f41235c145041eed03ef5bab18f32328"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/27282d2505b402f39371fd60d19d95c01a4b6776"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7a5f01828edf152c144d27cf63de446fdf2dc222"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.