CVE-2026-93183: Linux kernel · drm/lima: call drm_mm_init() with a valid allocation range
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in fd6bc5f1d6b54047b06b82bab25a7e21e4b1c95a : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in fd6bc5f1d6b54047b06b82bab25a7e21e4b1c95a, e0773ad25a34a49aece176721c466cf214e02222, e2a7cee341986cb5b544a8286edc7fb0494c592e +5
Exploitation evidence
Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
In the Linux kernel, the following vulnerability has been resolved: drm/lima: call drm_mm_init() with a valid allocation range lima_vm_create() is currently run before va_start and va_end are set up, meaning they are both 0. lima_vm_create() runs drm_mm_init() with them as arguments for the allocator, and if DRM_DEBUG_MM is enabled the DRM_MM_BUG_ON check in drm_mm_init then fires, as seen here on exynos4412-odroid-u2: [ 1.736297] ------------[ cut here ]------------ [ 1.740370] kernel BUG at drivers/gpu/drm/drm_mm.c:931! [ 1.745574] Internal error: Oops - BUG: 0 [#1] SMP ARM [ 1.750697] Modules linked in: [ 1.753734] CPU: 0 UID: 0 PID: 41 Comm: kworker/u16:1 Not tainted 7.0.10-postmarketos-exynos4 #11 PREEMPT [ 1.763372] Hardware name: Samsung Exynos (Flattened Device Tree) [ 1.769446] Workqueue: events_unbound deferred_probe_work_func [ 1.775261] PC is at drm_mm_init+0x9c/0xa4 [ 1.779339] LR is at lima_vm_create+0x144/0x17c [ ... ] Fix the issue by moving the lima_vm_create() call after va_start and va_end are set up.
References
- git.kernel.org/stable/c/af1f276d50c9d7ebcd25770f358ca503a89d96d7 (opens in a new tab)
- git.kernel.org/stable/c/fd6bc5f1d6b54047b06b82bab25a7e21e4b1c95a (opens in a new tab)
- git.kernel.org/stable/c/ad4e908096dff97646f77b04e2e2825225e215f7 (opens in a new tab)
- git.kernel.org/stable/c/788917ba77f5d69bd368c1d176ecceda346a2951 (opens in a new tab)
- git.kernel.org/stable/c/79a3331ee436c8b1454f897d539606c9b5ebdf9f (opens in a new tab)
- git.kernel.org/stable/c/e2a7cee341986cb5b544a8286edc7fb0494c592e (opens in a new tab)
- git.kernel.org/stable/c/e0773ad25a34a49aece176721c466cf214e02222 (opens in a new tab)
- git.kernel.org/stable/c/3b3bce4a692ac60d9f4a341e6b597dd1fd0a28f9 (opens in a new tab)