CVE-2022-49322 (GCVE-0-2022-49322)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:10 – Updated: 2025-12-23 13:23
VLAI?
Title
tracing: Fix sleeping function called from invalid context on RT kernel
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix sleeping function called from invalid context on RT kernel When setting bootparams="trace_event=initcall:initcall_start tp_printk=1" in the cmdline, the output_printk() was called, and the spin_lock_irqsave() was called in the atomic and irq disable interrupt context suitation. On the PREEMPT_RT kernel, these locks are replaced with sleepable rt-spinlock, so the stack calltrace will be triggered. Fix it by raw_spin_lock_irqsave when PREEMPT_RT and "trace_event=initcall:initcall_start tp_printk=1" enabled. BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0 preempt_count: 2, expected: 0 RCU nest depth: 0, expected: 0 Preemption disabled at: [<ffffffff8992303e>] try_to_wake_up+0x7e/0xba0 CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.17.1-rt17+ #19 34c5812404187a875f32bee7977f7367f9679ea7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x60/0x8c dump_stack+0x10/0x12 __might_resched.cold+0x11d/0x155 rt_spin_lock+0x40/0x70 trace_event_buffer_commit+0x2fa/0x4c0 ? map_vsyscall+0x93/0x93 trace_event_raw_event_initcall_start+0xbe/0x110 ? perf_trace_initcall_finish+0x210/0x210 ? probe_sched_wakeup+0x34/0x40 ? ttwu_do_wakeup+0xda/0x310 ? trace_hardirqs_on+0x35/0x170 ? map_vsyscall+0x93/0x93 do_one_initcall+0x217/0x3c0 ? trace_event_raw_event_initcall_level+0x170/0x170 ? push_cpu_stop+0x400/0x400 ? cblist_init_generic+0x241/0x290 kernel_init_freeable+0x1ac/0x347 ? _raw_spin_unlock_irq+0x65/0x80 ? rest_init+0xf0/0xf0 kernel_init+0x1e/0x150 ret_from_fork+0x22/0x30 </TASK>
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0daa2302968c13b657118d6ac92471f8fd2f3f28 , < be1f323fb9d9b14a505ca22d742d321769454de1 (git)
Affected: 0daa2302968c13b657118d6ac92471f8fd2f3f28 , < 40f9fde06b25884baa0c4bd138b909a9b67218b4 (git)
Affected: 0daa2302968c13b657118d6ac92471f8fd2f3f28 , < 48c6ee7d6c614f09b2c8553a95eefef6ecf196e0 (git)
Affected: 0daa2302968c13b657118d6ac92471f8fd2f3f28 , < 1788e6dbb61286215442b1af99e51405a6206762 (git)
Affected: 0daa2302968c13b657118d6ac92471f8fd2f3f28 , < 9b534640a2c6a8d88168febc82ec6d161184f2ec (git)
Affected: 0daa2302968c13b657118d6ac92471f8fd2f3f28 , < 43bfc4dccc416c964b53cbdc430e814f8b6f770b (git)
Affected: 0daa2302968c13b657118d6ac92471f8fd2f3f28 , < 9abf3db8bdb63ab545034148ef2118f4d088ca59 (git)
Affected: 0daa2302968c13b657118d6ac92471f8fd2f3f28 , < 12025abdc8539ed9d5014e2d647a3fd1bd3de5cd (git)
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    Linux Linux Affected: 3.19
Unaffected: 0 , < 3.19 (semver)
Unaffected: 4.14.283 , ≤ 4.14.* (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.122 , ≤ 5.10.* (semver)
Unaffected: 5.15.47 , ≤ 5.15.* (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix sleeping function called from invalid context on RT kernel\n\nWhen setting bootparams=\"trace_event=initcall:initcall_start tp_printk=1\" in the\ncmdline, the output_printk() was called, and the spin_lock_irqsave() was called in the\natomic and irq disable interrupt context suitation. On the PREEMPT_RT kernel,\nthese locks are replaced with sleepable rt-spinlock, so the stack calltrace will\nbe triggered.\nFix it by raw_spin_lock_irqsave when PREEMPT_RT and \"trace_event=initcall:initcall_start\ntp_printk=1\" enabled.\n\n BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46\n in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0\n preempt_count: 2, expected: 0\n RCU nest depth: 0, expected: 0\n Preemption disabled at:\n [\u003cffffffff8992303e\u003e] try_to_wake_up+0x7e/0xba0\n CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.17.1-rt17+ #19 34c5812404187a875f32bee7977f7367f9679ea7\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014\n Call Trace:\n  \u003cTASK\u003e\n  dump_stack_lvl+0x60/0x8c\n  dump_stack+0x10/0x12\n  __might_resched.cold+0x11d/0x155\n  rt_spin_lock+0x40/0x70\n  trace_event_buffer_commit+0x2fa/0x4c0\n  ? map_vsyscall+0x93/0x93\n  trace_event_raw_event_initcall_start+0xbe/0x110\n  ? perf_trace_initcall_finish+0x210/0x210\n  ? probe_sched_wakeup+0x34/0x40\n  ? ttwu_do_wakeup+0xda/0x310\n  ? trace_hardirqs_on+0x35/0x170\n  ? map_vsyscall+0x93/0x93\n  do_one_initcall+0x217/0x3c0\n  ? trace_event_raw_event_initcall_level+0x170/0x170\n  ? push_cpu_stop+0x400/0x400\n  ? cblist_init_generic+0x241/0x290\n  kernel_init_freeable+0x1ac/0x347\n  ? _raw_spin_unlock_irq+0x65/0x80\n  ? rest_init+0xf0/0xf0\n  kernel_init+0x1e/0x150\n  ret_from_fork+0x22/0x30\n  \u003c/TASK\u003e"
        }
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      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:23:35.308Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/be1f323fb9d9b14a505ca22d742d321769454de1"
        },
        {
          "url": "https://git.kernel.org/stable/c/40f9fde06b25884baa0c4bd138b909a9b67218b4"
        },
        {
          "url": "https://git.kernel.org/stable/c/48c6ee7d6c614f09b2c8553a95eefef6ecf196e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/1788e6dbb61286215442b1af99e51405a6206762"
        },
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          "url": "https://git.kernel.org/stable/c/9b534640a2c6a8d88168febc82ec6d161184f2ec"
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        {
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      "title": "tracing: Fix sleeping function called from invalid context on RT kernel",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49322",
    "datePublished": "2025-02-26T02:10:46.658Z",
    "dateReserved": "2025-02-26T02:08:31.537Z",
    "dateUpdated": "2025-12-23T13:23:35.308Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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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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