5.5

CVE-2022-50504: powerpc/rtas: avoid scheduling in rtas_os_term()

Analyzed
AliasesUBUNTU-CVE-2022-50504DEBIAN-CVE-2022-50504
Published 04-10-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50504 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 7
RHSA-2025:20518SUSE-SU-2025:4111-1SUSE-SU-2025:4135-1SUSE-SU-2025:4139-1SUSE-SU-2025:4149-1SUSE-SU-2025:4188-1

Timeline

  1. 04-10-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu121 products
  • linuxAll versions (No fix recorded) | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-69.76
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1033.37
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < f413135b337c4e90c1e593c6613f8717e17bc724 | ≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < 4768935b8cc2d2afeb7956292df0f6e2c49ca0a5 | ≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < ffa991a003abb4f8cb9e5004646bfe2d9a46912c | ≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < 515959eb49e6d218a46979d66f36fdef329ac7d2 | ≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < 6f7e2fcab73372a371ab4017cbedf7a71f4f9b40 | ≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < 7280fdb80bf0fe35d9b799fc7009f2cbe0a397d7 | ≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < bed48651c87bef59ea1a9d6dbc381bcbc452f4ff | ≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < 482d990a5dd1027ee0b70a8a570d56749cac8103 | ≥ 507279db1819aacf4022e790b3fc8bc8cf56debf, < 6c606e57eecc37d6b36d732b1ff7e55b7dc32dd4 | 2.6.18
  • linux_kernel≥ 2.6.18, < 4.9.337 | ≥ 4.10, < 4.14.303 | ≥ 4.15, < 4.19.270 | ≥ 4.20, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.87 | ≥ 5.16, < 6.0.17 | ≥ 6.1, < 6.1.3
Debian1 product
  • linux< 6.1.4-1

3 vendors · 124 products

References

13 links
Show all 13 references