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TI-2026-33900 Aliases CVE-2026-46176GHSA-r8g9-gm9p-ff4h

RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()

Priority LOW 35CWE-825Published · 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: RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init() mlx5_ib_dev_res_srq_init() allocates two SRQs, s0 and s1. When ib_create_srq() fails for s1, the error branch destroys s0 but falls through and unconditionally assigns the freed s0 and the ERR_PTR s1 to devr->s0 and devr->s1. This leads to several problems: the lock-free fast path checks "if (devr->s1) return 0;" and treats the ERR_PTR as already initialised; users in mlx5_ib_create_qp() dereference the freed SRQ or ERR_PTR via to_msrq(devr->s0)->msrq.srqn; and mlx5_ib_dev_res_cleanup() dereferences the ERR_PTR and double-frees s0 on teardown. Fix by adding the same `goto unlock` in the s1 failure path.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00142 3rd percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.6.140, 6.12.88, 6.18.30 +2Red Hat: 7 advisories

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
LinuxLinux6.6.64 to before 6.6.1406.6.140Patch availableCNA
LinuxLinux6.11 and later6.6.140, 6.12.88, 6.18.30, 7.0.7, 7.1Patch availableCNA
  • Linux VendorLinux Affected 6.6.64 to before 6.6.140 Fixed in 6.6.140 Patch available CNA
  • Linux VendorLinux Affected 6.11 and later Fixed in 6.6.140, 6.12.88, 6.18.30, 7.0.7, 7.1 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.6.64 to before 6.6.140; 6.11 to before 6.12.88; 6.13 to before 6.18.30; 6.19 to before 7.0.7VulnerableLinux
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 6.6.64 to before 6.6.140; 6.11 to before 6.12.88; 6.13 to before 6.18.30; 6.19 to before 7.0.7 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 6.6.140
  • Fix · CNA Linux (Linux) Fixed in 6.6.140, 6.12.88, 6.18.30, 7.0.7, 7.1

Red Hat 7 advisories

  • RHSA-2026:82326 Released 2026-10-13 · Red Hat rating Important
    kpatch-patch-6_12_0-211_16_1 and kpatch-patch-6_12_0-211_49_1 security update
    • Red Hat Enterprise Linux BaseOS (v. 10) kpatch-patch-6_12_0-211_16_1-2-10.el10_2, kpatch-patch-6_12_0-211_49_1-2-2.el10_2
  • RHSA-2026:81452 Released 2026-10-12 · Red Hat rating Important
    kpatch-patch-5_14_0-687_10_1 and kpatch-patch-5_14_0-687_42_1 security update
    • Red Hat Enterprise Linux BaseOS (v. 9) kpatch-patch-5_14_0-687_10_1-1-10.el9_8, kpatch-patch-5_14_0-687_42_1-1-1.el9_8
  • RHSA-2026:81451 Released 2026-10-12 · Red Hat rating Important
    kpatch-patch-5_14_0-570_116_1, kpatch-patch-5_14_0-570_135_1, kpatch-patch-5_14_0-570_39_1, kpatch-patch-5_14_0-570_66_1, and kpatch-patch-5_14_0-570_94_1 security update
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kpatch-patch-5_14_0-570_116_1-1-11.el9_6, kpatch-patch-5_14_0-570_135_1-1-2.el9_6, kpatch-patch-5_14_0-570_39_1-1-17.el9_6 +2
Show 4 more Red Hat advisories
  • RHSA-2026:34094 Released 2026-07-01 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.125.1.el9_6, libperf-5.14.0-570.125.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.125.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.125.1.el9_6, kernel-64k-devel-5.14.0-570.125.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.125.1.el9_6, kernel-64k-5.14.0-570.125.1.el9_6, kernel-64k-core-5.14.0-570.125.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.125.1.el9_6, kernel-rt-64k-5.14.0-570.125.1.el9_6, kernel-rt-64k-core-5.14.0-570.125.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.125.1.el9_6, kernel-rt-core-5.14.0-570.125.1.el9_6, kernel-rt-debug-5.14.0-570.125.1.el9_6 +11
  • RHSA-2026:33685 Released 2026-06-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.29.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.29.1.el10_2, kernel-64k-devel-6.12.0-211.29.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.29.1.el10_2, kernel-64k-6.12.0-211.29.1.el10_2, kernel-64k-core-6.12.0-211.29.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.29.1.el10_2, libperf-6.12.0-211.29.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.29.1.el10_2, kernel-rt-64k-6.12.0-211.29.1.el10_2, kernel-rt-64k-core-6.12.0-211.29.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.29.1.el10_2, kernel-rt-core-6.12.0-211.29.1.el10_2, kernel-rt-debug-6.12.0-211.29.1.el10_2 +9
  • RHSA-2026:33215 Released 2026-06-29 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.84.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.84.1.el10_0, kernel-64k-devel-6.12.0-55.84.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.84.1.el10_0, kernel-64k-6.12.0-55.84.1.el10_0, kernel-64k-core-6.12.0-55.84.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.84.1.el10_0, libperf-6.12.0-55.84.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.84.1.el10_0, kernel-rt-64k-6.12.0-55.84.1.el10_0, kernel-rt-64k-core-6.12.0-55.84.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.84.1.el10_0, kernel-rt-core-6.12.0-55.84.1.el10_0, kernel-rt-debug-6.12.0-55.84.1.el10_0 +11
  • RHSA-2026:30848 Released 2026-06-29 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.19.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.19.1.el9_8, kernel-64k-devel-5.14.0-687.19.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.19.1.el9_8, kernel-64k-5.14.0-687.19.1.el9_8, kernel-64k-core-5.14.0-687.19.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.19.1.el9_8, libperf-5.14.0-687.19.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.19.1.el9_8, kernel-rt-64k-5.14.0-687.19.1.el9_8, kernel-rt-64k-core-5.14.0-687.19.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.19.1.el9_8, kernel-rt-core-5.14.0-687.19.1.el9_8, kernel-rt-debug-5.14.0-687.19.1.el9_8 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:34094
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:30848
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:33215
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:34094
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:33685, RHSA-2026:82326
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:30848, RHSA-2026:81452
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:33215
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:34094, RHSA-2026:81451
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:30848
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:33215
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:30848
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:33215
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:34094
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:30848
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:33215
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:34094
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-2026-46176
  2. 2026-10-03 Alias added: GHSA-r8g9-gm9p-ff4h
  3. 2026-10-13 Fix available: RHSA-2026:81451 · Red Hat
  4. 2026-10-13 Fix available: RHSA-2026:81452 · Red Hat
  5. 2026-10-13 Affected versions changed · Red Hat
  6. 2026-10-14 Fix available: RHSA-2026:82326 · Red Hat
  7. 2026-10-15 Affected versions changed · Red Hat
  8. 2026-10-16 CISA SSVC decision points changed
  9. 2026-10-19 Weakness changed · CISA ADP
  10. 2026-10-29 Affected versions changed · Red Hat

References

Patch 5

  • 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