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TI-2026-33938 Aliases CVE-2026-46215GHSA-gm2j-59pp-6cxj

drm: Set old handle to NULL before prime swap in change_handle

Priority HIGH 69CWE-416Published · 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
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: drm: Set old handle to NULL before prime swap in change_handle There was a potential race condition in change_handle. The ioctl briefly had a single object with two idr entries; a concurrent gem_close could delete the object and remove one of the handles while leaving the other one dangling, which could subsequently be dereferenced for a use-after-free. To fix this, do the same dance that gem_close itself does. (f6cd7daecff5 drm: Release driver references to handle before making it available again) First idr_replace the old handle to NULL. Later, if the prime operations are successful, actually close it. create_tail required a similar dance to avoid a similar problem. (bd46cece51a3 drm/gem: Fix race in drm_gem_handle_create_tail()) It idr_allocs the new handle with NULL, then swaps in the correct object later to avoid races. We don't need to do that here, since the only operations that could race are drm_prime, and change_handle holds the prime lock for the entire duration. v2: cleanups of error paths

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00227 13th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.18.32, 7.0.9, 7.1Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
LinuxLinux6.18 and later6.18.32, 7.0.9, 7.1Patch availableCNA
  • Linux VendorLinux Affected 6.18 and later Fixed in 6.18.32, 7.0.9, 7.1 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.18 to before 6.18.32; 6.19 to before 7.0.9VulnerableLinux
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 6.18 to before 6.18.32; 6.19 to before 7.0.9 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 6.18.32, 7.0.9, 7.1

Red Hat 2 advisories

  • RHSA-2026:43307 Released 2026-07-22 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.29.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.29.1.el9_8, kernel-64k-devel-5.14.0-687.29.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.29.1.el9_8, kernel-64k-5.14.0-687.29.1.el9_8, kernel-64k-core-5.14.0-687.29.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.29.1.el9_8, libperf-5.14.0-687.29.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.29.1.el9_8, kernel-rt-64k-5.14.0-687.29.1.el9_8, kernel-rt-64k-core-5.14.0-687.29.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.29.1.el9_8, kernel-rt-core-5.14.0-687.29.1.el9_8, kernel-rt-debug-5.14.0-687.29.1.el9_8 +9
  • RHSA-2026:42919 Released 2026-07-21 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.37.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.37.1.el10_2, kernel-64k-devel-6.12.0-211.37.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.37.1.el10_2, kernel-64k-6.12.0-211.37.1.el10_2, kernel-64k-core-6.12.0-211.37.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.37.1.el10_2, libperf-6.12.0-211.37.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.37.1.el10_2, kernel-rt-64k-6.12.0-211.37.1.el10_2, kernel-rt-64k-core-6.12.0-211.37.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.37.1.el10_2, kernel-rt-core-6.12.0-211.37.1.el10_2, kernel-rt-debug-6.12.0-211.37.1.el10_2 +9

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-2026:42919
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:43307
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:42919
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:43307
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:42919
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:43307
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:42919
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:43307
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:42919
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:43307
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-2026-46215
  2. 2026-10-03 Alias added: GHSA-gm2j-59pp-6cxj
  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