Read the docs
TI-2022-24802 Aliases CVE-2022-49291GHSA-45c3-pwch-8qg9

ALSA: pcm: Fix races among concurrent hw_params and hw_free calls

Priority LOW 36CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 6 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent hw_params and hw_free calls Currently we have neither proper check nor protection against the concurrent calls of PCM hw_params and hw_free ioctls, which may result in a UAF. Since the existing PCM stream lock can't be used for protecting the whole ioctl operations, we need a new mutex to protect those racy calls. This patch introduced a new mutex, runtime->buffer_mutex, and applies it to both hw_params and hw_free ioctl code paths. Along with it, the both functions are slightly modified (the mmap_count check is moved into the state-check block) for code simplicity.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.003 22nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.14.279, 4.19.243, 5.4.193 +5Red Hat: 2 advisoriesRed Hat: 6 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.12 and later4.14.279, 4.19.243, 5.4.193, 5.10.109, 5.15.32, 5.16.18, 5.17.1, 5.18Patch availableCNA
  • Linux VendorLinux Affected 2.6.12 and later Fixed in 4.14.279, 4.19.243, 5.4.193, 5.10.109, 5.15.32, 5.16.18, 5.17.1, 5.18 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 4.14.279; 4.15 to before 4.19.243; 4.20 to before 5.4.193; 5.5 to before 5.10.109; 5.11 to before 5.15.32; 5.16 to before 5.16.18; 5.17 to before 5.17.1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 4.14.279; 4.15 to before 4.19.243; 4.20 to before 5.4.193; 5.5 to before 5.10.109; 5.11 to before 5.15.32; 5.16 to before 5.16.18; 5.17 to before 5.17.1 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.14.279, 4.19.243, 5.4.193, 5.10.109, 5.15.32, 5.16.18, 5.17.1, 5.18

Red Hat 2 advisories

  • RHSA-2024:4107 Released 2024-06-26 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.109.1.el8_6, kernel-4.18.0-372.109.1.el8_6, kernel-abi-stablelists-4.18.0-372.109.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.109.1.el8_6, kernel-4.18.0-372.109.1.el8_6, kernel-abi-stablelists-4.18.0-372.109.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.109.1.el8_6, kernel-4.18.0-372.109.1.el8_6, kernel-abi-stablelists-4.18.0-372.109.1.el8_6 +14
  • RHSA-2022:8267 Released 2022-11-15 · Red Hat rating Moderate
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-162.6.1.el9_1
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-debug-devel-5.14.0-162.6.1.el9_1, kernel-debug-devel-matched-5.14.0-162.6.1.el9_1, kernel-devel-5.14.0-162.6.1.el9_1 +5
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-5.14.0-162.6.1.el9_1, kernel-5.14.0-162.6.1.el9_1, kernel-abi-stablelists-5.14.0-162.6.1.el9_1 +14

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2022:8267
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2022:8267
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2022:8267
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2024:4107
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2024:4107
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2024:4107
Not affected: 3 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-49291
  2. 2026-10-03 Alias added: GHSA-45c3-pwch-8qg9

References

Patch 8

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences