Vulnpedia
← All CVEs

CVE-2022-49149

CRITICAL 9.8 ALL-YEARS

Published 2025-02-26 · Last modified 2026-10-15 · Linux · NVD: Modified

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix call timer start racing with call destruction The rxrpc_call struct has a timer used to handle various timed events relating to a call. This timer can get started from the packet input routines that are run in softirq mode with just the RCU read lock held. Unfortunately, because only the RCU read lock is held - and neither ref or other lock is taken - the call can start getting destroyed at the same time a packet comes in addressed to that call. This causes the timer - which was already stopped - to get restarted. Later, the timer dispatch code may then oops if the timer got deallocated first. Fix this by trying to take a ref on the rxrpc_call struct and, if successful, passing that ref along to the timer. If the timer was already running, the ref is discarded. The timer completion routine can then pass the ref along to the call's work item when it queues it. If the timer or work item where already queued/running, the extra ref is discarded.

ELEVATED IMPACT

Severe if exploited (CVSS 9.8), but no confirmed exploitation. Patch on a normal cadence.

Exploitation likelihood

0.5%chance of exploitation in 30 days · 42nd percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable yes

Impact if exploited

9.8CVSS 3.1 · CRITICAL · CNA

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityHigh

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Affected

Vendors Linux

Products Linux Linux Kernel

Weakness (CWE)

  • CWE-362: Race condition

CVSS vector

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

References and research data (JSON)

Vendor product assessments

Showing 32 of 274 vendor product statements; 242 omitted. Read the full vendor advisory.

  • bpftool as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/bpftool

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-64k-debug-devel-matched

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-64k-devel-matched

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-core as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-core

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-debug-modules-extra as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-debug-modules-extra

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-doc as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-doc

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-modules-partner as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-modules-partner

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-64k-debug-devel-matched

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-64k-devel as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-64k-devel

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-64k-modules-partner as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-64k-modules-partner

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-debug-modules as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-debug-modules

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-kvm as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-rt-kvm

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-selftests-internal as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-selftests-internal

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-zfcpdump-core as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-zfcpdump-core

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-zfcpdump-modules-partner as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/kernel-zfcpdump-modules-partner

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • rv as a component of Red Hat Enterprise Linux 9 · known affected

    Vendor assessment for this product only.

    pkg:rpm/redhat/rv

    • none available: Affected
    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel as a component of Red Hat Enterprise Linux 10 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-64k-devel-matched

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-debug-modules-core as a component of Red Hat Enterprise Linux 10 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-debug-modules-core

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-64k as a component of Red Hat Enterprise Linux 10 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-64k

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-64k-modules-extra as a component of Red Hat Enterprise Linux 10 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-64k-modules-extra

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-modules as a component of Red Hat Enterprise Linux 10 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-modules

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-zfcpdump-devel-matched as a component of Red Hat Enterprise Linux 10 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-zfcpdump-devel-matched

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-abi-whitelists as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-abi-whitelists

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • perf as a component of Red Hat Enterprise Linux 6 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/perf

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-kdump as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-kdump

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-trace-kvm as a component of Red Hat Enterprise Linux 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-trace-kvm

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-abi-whitelists as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-abi-whitelists

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-headers as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-headers

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-rt-debug-modules as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-rt-debug-modules

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • kernel-tools as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/kernel-tools

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00
  • python3-perf as a component of Red Hat Enterprise Linux 8 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not present

    pkg:rpm/redhat/python3-perf

    Red Hat · CVE-2022-49149 · Updated 2026-08-05T03:41:20+00:00

Known Affected Software Configurations

VendorProductVersion range
LinuxLinux Kernel≥ 4.15.1 and < 5.10.110
LinuxLinux Kernel≥ 5.11 and < 5.15.33
LinuxLinux Kernel≥ 5.16 and < 5.16.19
LinuxLinux Kernel≥ 5.17 and < 5.17.2
LinuxLinux Kernel4.15
LinuxLinux Kernel4.15
LinuxLinux Kernel4.15
LinuxLinux Kernel4.15
LinuxLinux Kernel4.15
LinuxLinux Kernel4.15
LinuxLinux Kernel4.15
LinuxLinux Kernel4.15
LinuxLinux Kernel4.15

All CVSS metrics

  • CRITICAL 9.8 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CRITICAL 9.8 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • MEDIUM 4.7 v3.1 · NVD Primary
    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Patches & mitigations

Advisories

Technical & other

Sources: NVD · CVE.org · All sources and attribution · EPSS