VulnerabilityPublished 24 Jun 2026Updated 6 Nov 2026

CVE-2026-52966: Linux kernel · drm: Replace old pointer to new idr

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in dc366607c41c45fd0ae6f3db090f31dd611b644a : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in dc366607c41c45fd0ae6f3db090f31dd611b644a, 318b995cffcfcaa69a234d28123a3f4ae186a9df, 38f12d0e10d83b66fa1466400d876a3a8da31542 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux to dc366607c41c45fd0ae6f3db090f31dd611b644a, 318b995cffcfcaa69a234d28123a3f4ae186a9df or 38f12d0e10d83b66fa1466400d876a3a8da31542; Linux to 7.0.10 or 6.18.33.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 5e28b7b94408897e41c63477aabc9e1db439bc8c, < dc366607c41c45fd0ae6f3db090f31dd611b644a	Fixed in dc366607c41c45fd0ae6f3db090f31dd611b644a
LinuxLinux	Affected ≥ 672464dd53231509c9c771110798c56d4660e19e, < 318b995cffcfcaa69a234d28123a3f4ae186a9df	Fixed in 318b995cffcfcaa69a234d28123a3f4ae186a9df
LinuxLinux	Affected ≥ 61bd96d3e5472c253f9c1ab77608f0c8aaa9d025, < 38f12d0e10d83b66fa1466400d876a3a8da31542	Fixed in 38f12d0e10d83b66fa1466400d876a3a8da31542
LinuxLinux	Affected >=7.0.9 <7.0.10	Fixed in 7.0.10
LinuxLinux	Affected >=6.18.32 <6.18.33	Fixed in 6.18.33

Description

In the Linux kernel, the following vulnerability has been resolved: drm: Replace old pointer to new idr Commit 5e28b7b94408 introduced a logical error by failing to replace the newly generated IDR pointer to old id's pointer at the correct location within the "change handle" logic; this resulted in the issue reported by syzbot [1]. Specifically, the new IDR object pointer is intended to replace the original id's pointer during the normal execution flow. Additionally, an unnecessary conditional check for the ret exit path has been removed. [1] !RB_EMPTY_ROOT(&prime_fpriv->dmabufs) WARNING: drivers/gpu/drm/drm_prime.c:224 at drm_prime_destroy_file_private+0x48/0x60 drivers/gpu/drm/drm_prime.c:224, CPU#0: syz.0.17/5833 Call Trace: drm_file_free.part.0+0x7e6/0xcc0 drivers/gpu/drm/drm_file.c:269 drm_file_free drivers/gpu/drm/drm_file.c:237 [inline] drm_close_helper.isra.0+0x186/0x200 drivers/gpu/drm/drm_file.c:290 drm_release+0x1ab/0x360 drivers/gpu/drm/drm_file.c:438

References

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