CVE-2022-50504
powerpc/rtas: avoid scheduling in rtas_os_term()
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: avoid scheduling in rtas_os_term() It's unsafe to use rtas_busy_delay() to handle a busy status from the ibm,os-term RTAS function in rtas_os_term(): Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b BUG: sleeping function called from invalid context at arch/powerpc/kernel/rtas.c:618 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1, name: swapper/0 preempt_count: 2, expected: 0 CPU: 7 PID: 1 Comm: swapper/0 Tainted: G D 6.0.0-rc5-02182-gf8553a572277-dirty #9 Call Trace: [c000000007b8f000] [c000000001337110] dump_stack_lvl+0xb4/0x110 (unreliable) [c000000007b8f040] [c0000000002440e4] __might_resched+0x394/0x3c0 [c000000007b8f0e0] [c00000000004f680] rtas_busy_delay+0x120/0x1b0 [c000000007b8f100] [c000000000052d04] rtas_os_term+0xb8/0xf4 [c000000007b8f180] [c0000000001150fc] pseries_panic+0x50/0x68 [c000000007b8f1f0] [c000000000036354] ppc_panic_platform_handler+0x34/0x50 [c000000007b8f210] [c0000000002303c4] notifier_call_chain+0xd4/0x1c0 [c000000007b8f2b0] [c0000000002306cc] atomic_notifier_call_chain+0xac/0x1c0 [c000000007b8f2f0] [c0000000001d62b8] panic+0x228/0x4d0 [c000000007b8f390] [c0000000001e573c] do_exit+0x140c/0x1420 [c000000007b8f480] [c0000000001e586c] make_task_dead+0xdc/0x200 Use rtas_busy_delay_time() instead, which signals without side effects whether to attempt the ibm,os-term RTAS call again.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.16% · top 94% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < f413135b337c4e90c1e593c6613f8717e17bc724
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < 4768935b8cc2d2afeb7956292df0f6e2c49ca0a5
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < ffa991a003abb4f8cb9e5004646bfe2d9a46912c
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < 515959eb49e6d218a46979d66f36fdef329ac7d2
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < 6f7e2fcab73372a371ab4017cbedf7a71f4f9b40
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < 7280fdb80bf0fe35d9b799fc7009f2cbe0a397d7
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < bed48651c87bef59ea1a9d6dbc381bcbc452f4ff
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < 482d990a5dd1027ee0b70a8a570d56749cac8103
- affected 507279db1819aacf4022e790b3fc8bc8cf56debf – < 6c606e57eecc37d6b36d732b1ff7e55b7dc32dd4
- affected 2.6.18
- unaffected < 2.6.18
- unaffected 4.9.337 – ≤ 4.9.*
- unaffected 4.14.303 – ≤ 4.14.*
- unaffected 4.19.270 – ≤ 4.19.*
- unaffected 5.4.229 – ≤ 5.4.*
- unaffected 5.10.163 – ≤ 5.10.*
- unaffected 5.15.87 – ≤ 5.15.*
- unaffected 6.0.17 – ≤ 6.0.*
- unaffected 6.1.3 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References (9)
- https://git.kernel.org/stable/c/f413135b337c4e90c1e593c6613f8717e17bc724 (opens in a new tab)
- https://git.kernel.org/stable/c/4768935b8cc2d2afeb7956292df0f6e2c49ca0a5 (opens in a new tab)
- https://git.kernel.org/stable/c/ffa991a003abb4f8cb9e5004646bfe2d9a46912c (opens in a new tab)
- https://git.kernel.org/stable/c/515959eb49e6d218a46979d66f36fdef329ac7d2 (opens in a new tab)
- https://git.kernel.org/stable/c/6f7e2fcab73372a371ab4017cbedf7a71f4f9b40 (opens in a new tab)
- https://git.kernel.org/stable/c/7280fdb80bf0fe35d9b799fc7009f2cbe0a397d7 (opens in a new tab)
- https://git.kernel.org/stable/c/bed48651c87bef59ea1a9d6dbc381bcbc452f4ff (opens in a new tab)
- https://git.kernel.org/stable/c/482d990a5dd1027ee0b70a8a570d56749cac8103 (opens in a new tab)
- https://git.kernel.org/stable/c/6c606e57eecc37d6b36d732b1ff7e55b7dc32dd4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-50504)Record last updated .