VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93158: Linux kernel · crypto: sa2ul – stop probe if context pool creation fails

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f72c7837614a9705f8b3021828d49c9f095803ba : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:31 UTC

Severity

Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f72c7837614a9705f8b3021828d49c9f095803ba, d03f980a25853f6a380895119a572a3bb1194e8d, b68b35ed97d3e18edb9dea500d88420a95006742 +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.

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 ≥ 7694b6ca649fead1a57046935711bc82dfc78cfb, < f72c7837614a9705f8b3021828d49c9f095803ba	Fixed in f72c7837614a9705f8b3021828d49c9f095803ba
LinuxLinux	Affected ≥ 7694b6ca649fead1a57046935711bc82dfc78cfb, < d03f980a25853f6a380895119a572a3bb1194e8d	Fixed in d03f980a25853f6a380895119a572a3bb1194e8d
LinuxLinux	Affected ≥ 7694b6ca649fead1a57046935711bc82dfc78cfb, < b68b35ed97d3e18edb9dea500d88420a95006742	Fixed in b68b35ed97d3e18edb9dea500d88420a95006742
LinuxLinux	Affected ≥ 7694b6ca649fead1a57046935711bc82dfc78cfb, < 9907426b438e4dbc8c45138bd440ad6d732d80b7	Fixed in 9907426b438e4dbc8c45138bd440ad6d732d80b7
LinuxLinux	Affected ≥ 7694b6ca649fead1a57046935711bc82dfc78cfb, < 304dcd26bfc3ce6771c2bd3b7c0299dcfd5f4e06	Fixed in 304dcd26bfc3ce6771c2bd3b7c0299dcfd5f4e06
LinuxLinux	Affected ≥ 7694b6ca649fead1a57046935711bc82dfc78cfb, < 91ded4742fcde6ad415c4d8a20e5ea0dcdf4f73e	Fixed in 91ded4742fcde6ad415c4d8a20e5ea0dcdf4f73e

AI-suggested

A fix is available and has been applied in the Linux kernel. Users should update to a fixed kernel version containing the relevant commits to ensure the vulnerability is remediated.

Description

A vulnerability in the Linux kernel's crypto subsystem (sa2ul) was fixed by stopping the probe process if the creation of the context pool fails. Previously, the probe continued despite failure to create the DMA pool for security context buffers, potentially leading to improper initialization and cleanup.

Impact

If the DMA pool creation fails and the probe continues, it could lead to improper initialization of the crypto subsystem, potentially causing instability or malfunction in cryptographic operations relying on this module. However, no known exploits in the wild have been reported.

Summary

The Linux kernel's sa2ul probe function calls sa_init_mem() to create a DMA pool for security context buffers but ignores the return value. If pool creation fails, the probe continues with DMA setup, algorithm registration, and child population, even though subsequent request setup depends on the pool. The fix stops probing when sa_init_mem() fails and routes failure to the power management cleanup path without attempting to destroy a non-existent DMA pool.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 14:31 UTC

Technical details

References

Community reviews

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