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TI-2026-38447 Aliases CVE-2026-53361GHSA-h72j-p4f7-vrcj

af_unix: Set gc_in_progress to true in unix_gc().

Priority LOW 31CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: af_unix: Set gc_in_progress to true in unix_gc(). Igor Ushakov reported that unix_gc() could run with gc_in_progress being false if the work is scheduled while running: Thread 1 Thread 2 Thread 3 -------- -------- -------- unix_schedule_gc() unix_schedule_gc() `- if (!gc_in_progress) `- if (!gc_in_progress) |- gc_in_progress = true | `- queue_work() | unix_gc() <----------------/ | | |- gc_in_progress = true ... `- queue_work() | | `- gc_in_progress = false | | unix_gc() <---------------------------------------------' | ... /* gc_in_progress == false */ | `- gc_in_progress = false unix_peek_fpl() relies on gc_in_progress not to confuse GC by MSG_PEEK. Let's set gc_in_progress to true in unix_gc().

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00258 17th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.1.183, 6.6.144, 6.12.95 +2Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.1.141 to before 6.1.183; 6.6.93 to before 6.6.1446.1.183, 6.6.144Patch availableCNA
LinuxLinux6.9 and later6.1.183, 6.6.144, 6.12.95, 6.18.38, 7.1Patch availableCNA
  • Linux VendorLinux Affected 6.1.141 to before 6.1.183; 6.6.93 to before 6.6.144 Fixed in 6.1.183, 6.6.144 Patch available CNA
  • Linux VendorLinux Affected 6.9 and later Fixed in 6.1.183, 6.6.144, 6.12.95, 6.18.38, 7.1 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.1.141 to before 6.2; 6.6.93 to before 6.6.144; 6.9 to before 6.12.95; 6.13 to before 6.18.38; 6.19 to before 7.1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*7.1 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*7.1 rc2VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.1.141 to before 6.2; 6.6.93 to before 6.6.144; 6.9 to before 6.12.95; 6.13 to before 6.18.38; 6.19 to before 7.1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* Versions 7.1 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* Versions 7.1 rc2 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.183, 6.6.144
  • Fix · CNA Linux (Linux) Fixed in 6.1.183, 6.6.144, 6.12.95, 6.18.38, 7.1

Red Hat 2 advisories

  • RHSA-2026:67471 Released 2026-09-15 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.55.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.55.1.el10_2, kernel-64k-devel-6.12.0-211.55.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.55.1.el10_2, kernel-64k-6.12.0-211.55.1.el10_2, kernel-64k-core-6.12.0-211.55.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.55.1.el10_2, libperf-6.12.0-211.55.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.55.1.el10_2, kernel-rt-64k-6.12.0-211.55.1.el10_2, kernel-rt-64k-core-6.12.0-211.55.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.55.1.el10_2, kernel-rt-core-6.12.0-211.55.1.el10_2, kernel-rt-debug-6.12.0-211.55.1.el10_2 +9
  • RHSA-2026:62609 Released 2026-09-02 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.102.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.102.1.el10_0, kernel-64k-devel-6.12.0-55.102.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.102.1.el10_0, kernel-64k-6.12.0-55.102.1.el10_0, kernel-64k-core-6.12.0-55.102.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.102.1.el10_0, libperf-6.12.0-55.102.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.102.1.el10_0, kernel-rt-64k-6.12.0-55.102.1.el10_0, kernel-rt-64k-core-6.12.0-55.102.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.102.1.el10_0, kernel-rt-core-6.12.0-55.102.1.el10_0, kernel-rt-debug-6.12.0-55.102.1.el10_0 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:67471
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:62609
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:67471
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:62609
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:67471
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:62609
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:67471
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:62609
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:67471
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:62609
Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-53361
  2. 2026-10-03 Alias added: GHSA-h72j-p4f7-vrcj
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-19 Weakness changed · CISA ADP

References

Patch 4

Other 1

  • 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