VulnerabilityPublished 28 Oct 2026

CVE-2026-99164: Linux kernel · spi: imx: fix slab corruption from undersized DMA bounce buffers

Source GCVE Database

Authoritative record:CVE-2026-99164

Not known to be exploited : upgrade to 2777f6637da02da84c9c1ff92f413ce0f0995084 or 59eb22641f0c526dd064390b11cff99ae87c2858 soon.

Data as of 28 Oct 2026, 13:57 UTC

Severity

High

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

Patch: Available – fixed in 2777f6637da02da84c9c1ff92f413ce0f0995084, 59eb22641f0c526dd064390b11cff99ae87c2858

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Oct 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.

ghsa-6p78-3986-725v

What to do

Upgrade Linux kernel to 2777f6637da02da84c9c1ff92f413ce0f0995084 or 59eb22641f0c526dd064390b11cff99ae87c2858.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ faa8e404ad8e686cb98c51dc507fdcacfb8020ce, < 2777f6637da02da84c9c1ff92f413ce0f0995084	Fixed in 2777f6637da02da84c9c1ff92f413ce0f0995084
LinuxLinux	Affected ≥ faa8e404ad8e686cb98c51dc507fdcacfb8020ce, < 59eb22641f0c526dd064390b11cff99ae87c2858	Fixed in 59eb22641f0c526dd064390b11cff99ae87c2858
LinuxLinux	Affected =7.0	Fixed in–
Debiandebian/linux`pkg:deb/debian/linux`Other threats	Affected =7.0	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available that fixes the buffer size mismatch by allocating DMA buffers with the full mapped length (DMA_CACHE_ALIGNED_LEN) and using consistent lengths for DMA synchronization. Applying this patch resolves the issue and prevents the slab corruption and kernel crashes.

Description

A vulnerability in the Linux kernel's spi: imx driver caused slab corruption due to undersized DMA bounce buffers. The driver allocated DMA buffers smaller than the size used during DMA operations, leading to memory corruption and kernel crashes under heavy load. This issue was fixed by adjusting buffer allocation to match the DMA mapping size, preventing out-of-bounds memory access.

References

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