Is there a patch available for CVE-2026-97985?

Yes, a patch is available for CVE-2026-97985. Update the affected software to the latest version immediately.

Linux CVE-2026-97985

EUVD-2026-86639

2026-09-25 Linux

GHSA-cq66-2f6w-rhg5

Information Disclosure Linux

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Monitor Track and reassess. Why: No CVSS yet + weak signal (CWE or non-zero EPSS).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisCVE.org

In the Linux kernel, the following vulnerability has been resolved:

af_unix: Update last skb marker in manage_oob().

Fahad Alharbi reported that blocking recv(MSG_PEEK) could hog CPU due to OOB skb.

In the following cases, manage_oob() skips OOB skb(s) and returns NULL for the last recv(MSG_PEEK):

socketpair(AF_UNIX, SOCK_STREAM, 0, sk);

skb -> OOB skb -> NULL

send(sk[0], "ab", 2, MSG_OOB); recv(sk[1], buf, 0, MSG_PEEK);

skb -> consumed OOB skb -> NULL

send(sk[0], "ab", 2, MSG_OOB); recv(sk[1], buf, 1, MSG_OOB); recv(sk[1], buf, 0, MSG_PEEK);

consumed OOB skb -> OOB skb -> NULL

send(sk[0], "a", 1, MSG_OOB); recv(sk[1], buf, 0, MSG_OOB); send(sk[0], "b", 1, MSG_OOB); recv(sk[1], buf, 1, MSG_PEEK);

Then, @copied is 0 in unix_stream_read_generic() (zero-length buffer, or non-OOB skb is not yet consumed), and unix_stream_data_wait() is called.

However, it returns immediately because @last is not updated in unix_stream_read_generic(), and the thread busy-waits for a new skb.

Let's update @last in manage_oob().

For MSG_PEEK, @last is updated with the skipped OOB, and for the non-peek case, @last matches the returned value (when !copied) because OOB is unlinked.

Note that manage_oob() is inlined and no stack canary is added.

Affected VersionsENISA

Linux 22dd70eb2c3d754862964377a75abafd3167346b <f1816b3d7ce80dcf086bb68ff5ae6e09520ca1fa

Linux 022d81a709cd553bbe2db8675f8e824f4aee6284

Linux patch: 6.12.111

Linux 6.8.8 <6.9

Linux patch: 6.18.53

Linux 22dd70eb2c3d754862964377a75abafd3167346b <fc62a26493a98a0424d9dae2eb92a1daa1321f65

Linux ae3f9e1221b31b18dbd4c4b85d08574996bbd973

Linux 22dd70eb2c3d754862964377a75abafd3167346b <0630bfc773d85ac44da05b2c5a037dbbd39301ab

Linux ba0db4638525b8b054b3d546b45f7e473f477027

Linux patch: 0

Linux 16dc252e7007547a7b72a2c21022ef81fb45e6a3

Linux 6.9

Linux patch: 7.3-rc3

Linux 6.1.88 <6.2

Linux 6.6.29 <6.7

Linux patch: 7.2.7

Linux 5.15.157 <5.16

Linux 22dd70eb2c3d754862964377a75abafd3167346b <94fd4debd2e3a69cf93e766c8b328a810c228119

Affected Packages

euvd linux fix: 5.16, 6.2, 6.7, 6.9

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Exploit and PoC references, threat intelligence from 22 sources

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Lifecycle Timeline

Patch available

Sep 25, 2026 - 11:02 EUVD

CVE Published

Sep 25, 2026 - 10:23 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 95% exploitable

Data Quality

3 sources

Confidence: Low

EUVD

CVE.org

EPSS MSRC

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity Not scored yet

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

No CVSS yet + weak signal (CWE or non-zero EPSS)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.