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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 4768935b8cc2d2afeb7956292df0f6e2c49ca0a5, 482d990a5dd1027ee0b70a8a570d56749cac8103, 515959eb49e6d218a46979d66f36fdef329ac7d2.

Low priority for now. Upgrade to Linux Linux 4768935b8cc2d2afeb7956292df0f6e2c49ca0a5, 482d990a5dd1027ee0b70a8a570d56749cac8103, 515959eb49e6d218a46979d66f36fdef329ac7d2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 4, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 5th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel2.6.18 and later · before 4.9.337
  • linux linux kernel4.10 and later · before 4.14.303
  • linux linux kernel4.15 and later · before 4.19.270
  • linux linux kernel4.20 and later · before 5.4.229
  • linux linux kernel5.5 and later · before 5.10.163
  • linux linux kernel5.11 and later · before 5.15.87
  • linux linux kernel5.16 and later · before 6.0.17
  • linux linux kernel6.1 and later · before 6.1.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.18affected
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before f413135b337c4e90c1e593c6613f8717e17bc724affected · git
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before 4768935b8cc2d2afeb7956292df0f6e2c49ca0a5affected · git
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before ffa991a003abb4f8cb9e5004646bfe2d9a46912caffected · git
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before 515959eb49e6d218a46979d66f36fdef329ac7d2affected · git
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before 6f7e2fcab73372a371ab4017cbedf7a71f4f9b40affected · git
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before 7280fdb80bf0fe35d9b799fc7009f2cbe0a397d7affected · git
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before bed48651c87bef59ea1a9d6dbc381bcbc452f4ffaffected · git
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before 482d990a5dd1027ee0b70a8a570d56749cac8103affected · git
    • 507279db1819aacf4022e790b3fc8bc8cf56debf and later · before 6c606e57eecc37d6b36d732b1ff7e55b7dc32dd4affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-develbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-64k-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-64k-develbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-debug-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-debug-develbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-develbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-devel-matchedbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-docbefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-rt-64k-debug-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-rt-64k-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-rt-debug-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-rt-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-tools-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7
Red Hat:enterprise_linux:9::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-611.5.1.el9_70:5.14.0-611.5.1.el9_7

+78

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-50501Oct 4, 2025 · media: coda: Add check for dcoda_iram_alloc
    22Monitor
  • ← EarlierCVE-2022-50503Oct 4, 2025 · mtd: lpddr2_nvm: Fix possible null-ptr-deref
    22Monitor
  • Later →CVE-2022-50505Oct 4, 2025 · iommu/amd: Fix pci device refcount leak in ppr_notifier()
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux4768935b8cc2d2afeb7956292df0f6e2c49ca0a5Vendor (CNA)
Linux Linux482d990a5dd1027ee0b70a8a570d56749cac8103Vendor (CNA)
Linux Linux515959eb49e6d218a46979d66f36fdef329ac7d2Vendor (CNA)
Linux Linux6c606e57eecc37d6b36d732b1ff7e55b7dc32dd4Vendor (CNA)
Linux Linux6f7e2fcab73372a371ab4017cbedf7a71f4f9b40Vendor (CNA)
Linux Linux7280fdb80bf0fe35d9b799fc7009f2cbe0a397d7Vendor (CNA)
Linux Linuxbed48651c87bef59ea1a9d6dbc381bcbc452f4ffVendor (CNA)
Linux Linuxf413135b337c4e90c1e593c6613f8717e17bc724Vendor (CNA)
Linux Linuxffa991a003abb4f8cb9e5004646bfe2d9a46912cVendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-ppc64le0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
suse:kernel-64kb5.3.18-150300.59.226.2 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-default5.3.18-150300.59.226.2 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-default-base5.3.18-150300.59.226.2.150300.18.134.2 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-docs5.3.18-150300.59.226.3 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP3_Update_631-150300.7.5.2 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-obs-build5.3.18-150300.59.226.2 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-preempt5.3.18-150300.59.226.2 · SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSSPackage registry (OSV)
suse:kernel-rt5.3.18-150300.226.1 · SUSE:Linux Enterprise Micro 5.2Package registry (OSV)

+4

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records