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TI-2024-37593 Aliases CVE-2024-56709GHSA-6mmm-fwjc-qrhc

io_uring: check if iowq is killed before queuing

Priority LOW 34Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · 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: io_uring: check if iowq is killed before queuing task work can be executed after the task has gone through io_uring termination, whether it's the final task_work run or the fallback path. In this case, task work will find ->io_wq being already killed and null'ed, which is a problem if it then tries to forward the request to io_queue_iowq(). Make io_queue_iowq() fail requests in this case. Note that it also checks PF_KTHREAD, because the user can first close a DEFER_TASKRUN ring and shortly after kill the task, in which case ->iowq check would race.

Why it matters now

EPSS 0.00271 19th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.1.122, 6.6.68, 6.12.7 +1Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.14 and later6.1.122, 6.6.68, 6.12.7, 6.13Patch availableCNA
  • Linux VendorLinux Affected 5.14 and later Fixed in 6.1.122, 6.6.68, 6.12.7, 6.13 Patch available CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.14.1 to before 6.1.122; 6.2 to before 6.6.68; 6.7 to before 6.12.7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*5.14VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:*5.14 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:*5.14 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:*5.14 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:*5.14 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*6.13 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*6.13 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*6.13 rc3VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.14.1 to before 6.1.122; 6.2 to before 6.6.68; 6.7 to before 6.12.7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:* Versions 5.14 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:* Versions 5.14 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:* Versions 5.14 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:* Versions 5.14 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:* Versions 5.14 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:* Versions 6.13 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:* Versions 6.13 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:* Versions 6.13 rc3 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.122, 6.6.68, 6.12.7, 6.13

Red Hat 1 advisory

  • RHSA-2025:20518 Released 2025-11-11 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-611.5.1.el9_7, kernel-64k-debug-devel-matched-5.14.0-611.5.1.el9_7, kernel-64k-devel-5.14.0-611.5.1.el9_7 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-611.5.1.el9_7, kernel-64k-5.14.0-611.5.1.el9_7, kernel-64k-core-5.14.0-611.5.1.el9_7 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-611.5.1.el9_7, libperf-5.14.0-611.5.1.el9_7
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-611.5.1.el9_7, kernel-rt-64k-5.14.0-611.5.1.el9_7, kernel-rt-64k-core-5.14.0-611.5.1.el9_7 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-611.5.1.el9_7, kernel-rt-core-5.14.0-611.5.1.el9_7, kernel-rt-debug-5.14.0-611.5.1.el9_7 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:20518
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:20518
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:20518
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:20518
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:20518
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-56709
  2. 2026-10-03 Alias added: GHSA-6mmm-fwjc-qrhc
  3. 2026-10-29 Affected versions changed · Red Hat

References

Patch 4

  • 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