VulnerabilityPublished 17 Sep 2026Updated 21 Oct 2026

CVE-2026-93058: Linux kernel · drm/msm: Only fini scheduler after successful init

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in e2332abed2a4d3caa59052095dc16e4ce44791ea : update Linux kernel when convenient.

Data as of 26 Oct 2026, 20:07 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in e2332abed2a4d3caa59052095dc16e4ce44791ea, d43e1bbfd43458b9242806eec77ea3b032134baf, bd2a5a876904eaf688a093cd73986abc3571f26b +2

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.

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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 1d8a5ca436ee4a28eec14cb813f790f7cdeeee19, < e2332abed2a4d3caa59052095dc16e4ce44791ea	Fixed in e2332abed2a4d3caa59052095dc16e4ce44791ea
LinuxLinux	Affected ≥ 1d8a5ca436ee4a28eec14cb813f790f7cdeeee19, < d43e1bbfd43458b9242806eec77ea3b032134baf	Fixed in d43e1bbfd43458b9242806eec77ea3b032134baf
LinuxLinux	Affected ≥ 1d8a5ca436ee4a28eec14cb813f790f7cdeeee19, < bd2a5a876904eaf688a093cd73986abc3571f26b	Fixed in bd2a5a876904eaf688a093cd73986abc3571f26b
LinuxLinux	Affected ≥ 1d8a5ca436ee4a28eec14cb813f790f7cdeeee19, < aafc9258efeec98fcb7e3998356b4b25bf1ad159	Fixed in aafc9258efeec98fcb7e3998356b4b25bf1ad159
LinuxLinux	Affected ≥ 1d8a5ca436ee4a28eec14cb813f790f7cdeeee19, < 09b360eb6ce345996a30fad8c86e9df80f41cd7e	Fixed in 09b360eb6ce345996a30fad8c86e9df80f41cd7e
LinuxLinux	Affected =5.15	Fixed in–

AI-suggested

A fix is available and has been applied in the Linux kernel. Users should update to a fixed kernel version containing the patches identified by the provided commit hashes. No additional mitigation steps are indicated.

Description

A flaw in the Linux kernel's drm/msm driver caused improper cleanup of scheduler resources if initialization failed. Specifically, drm_sched_fini() was called even when drm_sched_init() did not complete successfully, leading to teardown of uninitialized scheduler components. This issue was identified by static analysis and fixed by ensuring drm_sched_fini() is only called after successful scheduler initialization.

Impact

The impact is related to improper cleanup of scheduler resources in the drm/msm driver on initialization failure. While the description does not specify exploitation or direct security consequences, the improper teardown could lead to kernel instability or resource corruption. There is no indication of active exploitation or a direct security breach.

Summary

The vulnerability in the Linux kernel drm/msm driver involves the scheduler initialization and teardown sequence. When msm_ringbuffer_new() fails during allocation or scheduler setup, it destroys the partially initialized ringbuffer. However, if drm_sched_init() fails before completing scheduler setup, the failure path erroneously calls drm_sched_fini(), which assumes scheduler structures were initialized. This can lead to improper resource handling or potential instability. The fix tracks successful scheduler initialization and calls drm_sched_fini() only if drm_sched_init() returns success (0). The issue was discovered via static analysis and manual code review.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 20:07 UTC

Technical details

References

Community reviews

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