VulnerabilityPublished 14 Jan 2026Updated 5 Nov 2026

CVE-2025-71137: Linux kernel · octeontx2-pf: fix "UBSAN: shift-out-of-bounds error

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in b23a2e15589466a027c9baa3fb5813c9f6a6c6dc : update Linux kernel when convenient.

Data as of 5 Nov 2026, 21:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch

Available – fixed in b23a2e15589466a027c9baa3fb5813c9f6a6c6dc, aa743b0d98448282b2cb37356db8db2a48524624, 442848e457f5a9f71a4e7e14d24d73dae278ebe3 +4

Exploitation evidence

Disclosed: evidence found.
CVE published 14 Jan 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 5 Nov 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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 ≥ d45d8979840d9c9ac93d3fe8cfc8e794b7228445, < b23a2e15589466a027c9baa3fb5813c9f6a6c6dc	Fixed in b23a2e15589466a027c9baa3fb5813c9f6a6c6dc
LinuxLinux	Affected ≥ d45d8979840d9c9ac93d3fe8cfc8e794b7228445, < aa743b0d98448282b2cb37356db8db2a48524624	Fixed in aa743b0d98448282b2cb37356db8db2a48524624
LinuxLinux	Affected ≥ d45d8979840d9c9ac93d3fe8cfc8e794b7228445, < 442848e457f5a9f71a4e7e14d24d73dae278ebe3	Fixed in 442848e457f5a9f71a4e7e14d24d73dae278ebe3
LinuxLinux	Affected ≥ d45d8979840d9c9ac93d3fe8cfc8e794b7228445, < 658caf3b8aad65f8b8e102670ca4f68c7030f655	Fixed in 658caf3b8aad65f8b8e102670ca4f68c7030f655
LinuxLinux	Affected ≥ d45d8979840d9c9ac93d3fe8cfc8e794b7228445, < 85f4b0c650d9f9db10bda8d3acfa1af83bf78cf7	Fixed in 85f4b0c650d9f9db10bda8d3acfa1af83bf78cf7
LinuxLinux	Affected ≥ d45d8979840d9c9ac93d3fe8cfc8e794b7228445, < 5d8dfa3abb9a845302e021cf9c92d941abbc011a	Fixed in 5d8dfa3abb9a845302e021cf9c92d941abbc011a

Description

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix "UBSAN: shift-out-of-bounds error" This patch ensures that the RX ring size (rx_pending) is not set below the permitted length. This avoids UBSAN shift-out-of-bounds errors when users passes small or zero ring sizes via ethtool -G.

References

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