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TI-2026-31307 Aliases CVE-2026-43128GHSA-6g84-hfm2-x43x

RDMA/umem: Fix double dma_buf_unpin in failure path

Priority LOW 35CWE-415Published · 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: 28 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-415 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix double dma_buf_unpin in failure path In ib_umem_dmabuf_get_pinned_with_dma_device(), the call to ib_umem_dmabuf_map_pages() can fail. If this occurs, the dmabuf is immediately unpinned but the umem_dmabuf->pinned flag is still set. Then, when ib_umem_release() is called, it calls ib_umem_dmabuf_revoke() which will call dma_buf_unpin() again. Fix this by removing the immediate unpin upon failure and just let the ib_umem_release/revoke path handle it. This also ensures the proper unmap-unpin unwind ordering if the dmabuf_map_pages call happened to fail due to dma_resv_wait_timeout (and therefore has a non-NULL umem_dmabuf->sgt).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00139 3rd percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.165, 6.6.128, 6.12.75 +3Red Hat: 7 advisoriesRed Hat: 28 fixed, 1 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
LinuxLinux5.16 and later6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0Patch availableCNA
  • Linux VendorLinux Affected 5.16 and later Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.16 to before 6.1.165; 6.2 to before 6.6.128; 6.7 to before 6.12.75; 6.13 to before 6.18.16; 6.19 to before 6.19.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*7.0 rc1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.16 to before 6.1.165; 6.2 to before 6.6.128; 6.7 to before 6.12.75; 6.13 to before 6.18.16; 6.19 to before 6.19.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* Versions 7.0 rc1 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0

Red Hat 7 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-2026:34095 Released 2026-07-01 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.178.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.178.1.el9_2, kernel-64k-devel-5.14.0-284.178.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.178.1.el9_2, kernel-5.14.0-284.178.1.el9_2, kernel-64k-5.14.0-284.178.1.el9_2 +29
  • RHSA-2026:33900 Released 2026-07-01 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.178.1.rt14.463.el9_2, kernel-rt-core-5.14.0-284.178.1.rt14.463.el9_2, kernel-rt-debug-5.14.0-284.178.1.rt14.463.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.178.1.rt14.463.el9_2, kernel-rt-core-5.14.0-284.178.1.rt14.463.el9_2, kernel-rt-debug-5.14.0-284.178.1.rt14.463.el9_2 +11
Show 4 more Red Hat advisories
  • 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-2026:27713 Released 2026-06-22 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.134.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.134.1.el9_4, kernel-64k-devel-5.14.0-427.134.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.134.1.el9_4, kernel-5.14.0-427.134.1.el9_4, kernel-64k-5.14.0-427.134.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.134.1.el9_4, kernel-rt-core-5.14.0-427.134.1.el9_4, kernel-rt-debug-5.14.0-427.134.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.134.1.el9_4, kernel-rt-core-5.14.0-427.134.1.el9_4, kernel-rt-debug-5.14.0-427.134.1.el9_4 +11
  • RHSA-2026:19568 Released 2026-05-20 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.10.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.10.1.el9_8, kernel-64k-devel-5.14.0-687.10.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.10.1.el9_8, kernel-64k-5.14.0-687.10.1.el9_8, kernel-64k-core-5.14.0-687.10.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.10.1.el9_8, libperf-5.14.0-687.10.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.10.1.el9_8, kernel-rt-64k-5.14.0-687.10.1.el9_8, kernel-rt-64k-core-5.14.0-687.10.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.10.1.el9_8, kernel-rt-core-5.14.0-687.10.1.el9_8, kernel-rt-debug-5.14.0-687.10.1.el9_8 +9
  • RHSA-2026:19569 Released 2026-05-20 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.16.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.16.1.el10_2, kernel-64k-devel-6.12.0-211.16.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.16.1.el10_2, kernel-64k-6.12.0-211.16.1.el10_2, kernel-64k-core-6.12.0-211.16.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.16.1.el10_2, libperf-6.12.0-211.16.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.16.1.el10_2, kernel-rt-64k-6.12.0-211.16.1.el10_2, kernel-rt-64k-core-6.12.0-211.16.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.16.1.el10_2, kernel-rt-core-6.12.0-211.16.1.el10_2, kernel-rt-debug-6.12.0-211.16.1.el10_2 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:34094
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:19569
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:19568
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:34095
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:27713
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-2026:19569
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:19568
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:34095
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:27713
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
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:19569
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:19568
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-2026:19569
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:19568
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:33900
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:27713
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-2026:19569
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:19568
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:33900
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:27713
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: 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-2026-43128
  2. 2026-10-03 Alias added: GHSA-6g84-hfm2-x43x
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-19 Weakness changed · CISA ADP

References

Patch 6

  • 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