VulnerabilityPublished 24 Sep 2026Updated 19 Oct 2026

CVE-2026-93213: Linux kernel · of: fix out-of-bounds read in of_alias_scan() stem parser

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in fd0c7bbda81c0e0c1cb7b68d267b87371584f560 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 17:16 UTC

Severity

Medium

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in fd0c7bbda81c0e0c1cb7b68d267b87371584f560, f7f6c3e32a31f2e1ed12075e8cd22b370a84e67a, da7a80ddc610a19b0378016a4d816b9355f013a7 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 24 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 ≥ 611cad720148c899db5a383c1c676fd820df7023, < fd0c7bbda81c0e0c1cb7b68d267b87371584f560	Fixed in fd0c7bbda81c0e0c1cb7b68d267b87371584f560
LinuxLinux	Affected ≥ 611cad720148c899db5a383c1c676fd820df7023, < f7f6c3e32a31f2e1ed12075e8cd22b370a84e67a	Fixed in f7f6c3e32a31f2e1ed12075e8cd22b370a84e67a
LinuxLinux	Affected ≥ 611cad720148c899db5a383c1c676fd820df7023, < da7a80ddc610a19b0378016a4d816b9355f013a7	Fixed in da7a80ddc610a19b0378016a4d816b9355f013a7
LinuxLinux	Affected ≥ 611cad720148c899db5a383c1c676fd820df7023, < acd1b49043366f43e932308b4db7d3ce568eeadb	Fixed in acd1b49043366f43e932308b4db7d3ce568eeadb
LinuxLinux	Affected ≥ 611cad720148c899db5a383c1c676fd820df7023, < 9253cfc5a85be1494ce56b4fc6f2d2b509440910	Fixed in 9253cfc5a85be1494ce56b4fc6f2d2b509440910
LinuxLinux	Affected ≥ 611cad720148c899db5a383c1c676fd820df7023, < 958d7ee9fcf008ef9d2072c6410ee1bf6abf3b64	Fixed in 958d7ee9fcf008ef9d2072c6410ee1bf6abf3b64

AI-suggested

A fix is available and has been applied in the Linux kernel as indicated by multiple fixed commits. Users and administrators should update to a kernel version that includes these fixes to remediate the vulnerability.

Description

A vulnerability in the Linux kernel's device tree alias parser (of_alias_scan) caused an out-of-bounds read due to improper boundary checking. The parser checked a character before verifying bounds, leading to a read before the property name when the name was empty or consisted only of digits. This issue has been fixed by correcting the boundary check order.

Impact

The vulnerability results in an out-of-bounds read in kernel memory during device tree alias parsing. While the exact impact is not detailed, out-of-bounds reads can potentially lead to information disclosure or kernel instability. There is no indication of known exploits in the wild.

Summary

CVE-2026-93213 addresses an out-of-bounds read vulnerability in the Linux kernel's of_alias_scan() stem parser. The flaw occurs because the code tests isdigit(*(end - 1)) before ensuring that the pointer 'end' is greater than 'start', which can cause reading one byte before the property name if the name is empty or all digits. The fix involves checking the boundary condition first to prevent this invalid memory access. Multiple commits have been made to resolve this issue.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 14:02 UTC

Technical details

References

Community reviews

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