CVE-2026-98180: Linux kernel · drm/msm: RCU-free the scheduler-containing ring and VM objects
Source GCVE Database
Not known to be exploited · CVSS 7.1 High · fixed in d81bf4581903b0cba0698cd4d1c07fc6be21754a : patch Linux kernel soon.
Data as of 10 Nov 2026, 23:25 UTC
Thin evidence
One scorer or none| CNA (Linux) | CVSS 3.1 | 7.1 |
|---|
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in d81bf4581903b0cba0698cd4d1c07fc6be21754a, 713abac5c04ccbae67f9ac68c3921845535388e7, 01c8d1f385f788f1bbbbb7687c4386d614281218 +1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 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 10 Nov 2026.
What to do
Upgrade Linux kernel to d81bf4581903b0cba0698cd4d1c07fc6be21754a, 713abac5c04ccbae67f9ac68c3921845535388e7, 01c8d1f385f788f1bbbbb7687c4386d614281218 or 0ba7c696eea3af41ac4712197566a7b94eedc637.
Affected software
| Product | 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– |
Description
In the Linux kernel, the following vulnerability has been resolved: drm/msm: RCU-free the scheduler-containing ring and VM objects Both struct msm_ringbuffer and struct msm_gem_vm embed a struct drm_gpu_scheduler. msm_ringbuffer_destroy() and the VM free callback msm_gem_vm_free() call drm_sched_fini() on the embedded scheduler and then free the containing object with plain kfree(). drm_sched_fence_get_timeline_name() returns fence->sched->name, and the scheduler fence keeps a .release callback so it is not ops-detached on signalling. A finished fence exported to userspace (the submit out-fence, or a VM_BIND fence, via sync_file / drm_syncobj) keeps pointing at the embedded scheduler after the ring/VM is freed, so a later get_timeline_name() -- reachable unprivileged through SYNC_IOC_FILE_INFO -- dereferences freed slab memory (KASAN slab-use-after-free read). Per the dma-fence lifetime contract the exporter must keep the data backing a signalled fence alive for an RCU grace period. Free the scheduler-containing objects with kfree_rcu() instead of kfree(). Patchwork: https://patchwork.freedesktop.org/patch/750234/
References
- nvd.nist.gov/vuln/detail/CVE-2026-98180 (opens in a new tab)
- git.kernel.org/stable/c/01c8d1f385f788f1bbbbb7687c4386d614281218 (opens in a new tab)
- git.kernel.org/stable/c/0ba7c696eea3af41ac4712197566a7b94eedc637 (opens in a new tab)
- git.kernel.org/stable/c/713abac5c04ccbae67f9ac68c3921845535388e7 (opens in a new tab)
- git.kernel.org/stable/c/d81bf4581903b0cba0698cd4d1c07fc6be21754a (opens in a new tab)