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TI-2024-23744 Aliases CVE-2024-35880GHSA-fj82-rhmq-mr6v

io_uring/kbuf: hold io_buffer_list reference over mmap

Priority LOW 37Published · 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/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00686 52nd percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.6.26, 6.8.5, 6.9Red Hat: 1 advisory

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
LinuxLinux6.6.5 to before 6.6.266.6.26Patch availableCNA
LinuxLinux6.7 and later6.6.26, 6.8.5, 6.9Patch availableCNA
  • Linux VendorLinux Affected 6.6.5 to before 6.6.26 Fixed in 6.6.26 Patch available CNA
  • Linux VendorLinux Affected 6.7 and later Fixed in 6.6.26, 6.8.5, 6.9 Patch available CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.6.5 to before 6.6.26; 6.7.1 to before 6.8.5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:-:*:*:*:*:*:*6.7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*6.7 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:*6.7 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc6:*:*:*:*:*:*6.7 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc7:*:*:*:*:*:*6.7 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.7:rc8:*:*:*:*:*:*6.7 rc8VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*6.9 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*6.9 rc2VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.6.5 to before 6.6.26; 6.7.1 to before 6.8.5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:-:*:*:*:*:*:* Versions 6.7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:* Versions 6.7 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:* Versions 6.7 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc6:*:*:*:*:*:* Versions 6.7 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc7:*:*:*:*:*:* Versions 6.7 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.7:rc8:*:*:*:*:*:* Versions 6.7 rc8 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* Versions 6.9 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* Versions 6.9 rc2 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.6.26
  • Fix · CNA Linux (Linux) Fixed in 6.6.26, 6.8.5, 6.9

Red Hat 1 advisory

  • RHSA-2024:9315 Released 2024-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder (v. 9) kernel-cross-headers-5.14.0-503.11.1.el9_5, kernel-tools-libs-devel-5.14.0-503.11.1.el9_5, libperf-5.14.0-503.11.1.el9_5
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.11.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.11.1.el9_5, kernel-64k-devel-5.14.0-503.11.1.el9_5 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.11.1.el9_5, kernel-5.14.0-503.11.1.el9_5, kernel-64k-5.14.0-503.11.1.el9_5 +30
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +9
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +11

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2024:9315
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:9315
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2024:9315
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2024:9315
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2024:9315
Not affected: 6 products
  • Red Hat CodeReady Linux Builder (v. 9)
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Enterprise Linux AppStream (v. 9)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-35880
  2. 2026-10-03 Alias added: GHSA-fj82-rhmq-mr6v
  3. 2026-10-29 Affected versions changed · Red Hat

References

Patch 3

  • 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