Is there a patch available for CVE-2026-99043?

Yes, a patch is available for CVE-2026-99043. Update the affected software to the latest version immediately.

Linux CVE-2026-99043

EUVD-2026-108838

2026-10-23 Linux

GHSA-45qx-wx52-595w

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:

ice: fix metadata_dst refcount handling on representor teardown

ice_eswitch_release_repr() uses metadata_dst_free() to release the representor's metadata_dst. metadata_dst_free() directly frees the underlying memory without checking the dst_entry refcount.

When ice_eswitch_port_start_xmit() processes a packet, it takes a reference via dst_hold() and attaches the metadata_dst to the skb. If the representor is torn down while packets are still queued on the lower device (e.g. in a qdisc), the metadata_dst is freed while references are still held.

Use dst_release() instead, which correctly decrements the refcount and only frees the object when all references are dropped. The dst subsystem already handles metadata_dst cleanup in dst_destroy() when DST_METADATA is set.

Other drivers sharing this pattern (nfp, airoha, bnxt) already use dst_release() for their metadata_dst lifecycle.

Affected VersionsENISA

Linux patch: 7.2.11

Linux 5.16

Linux f5396b8a663f7a78ee5b75a47ee524b40795b265 <1f263235651775f93c15d90c9f25c3f4a4ef6512

Linux f5396b8a663f7a78ee5b75a47ee524b40795b265 <5e4d20db5179e83a4948927bc39e489a9a83256d

Linux f5396b8a663f7a78ee5b75a47ee524b40795b265 <6f5544f53f1e58ea8a49fb9f9158d5793b9205b0

Linux patch: 6.12.113

Linux patch: 7.3

Linux patch: 6.6.160

Linux f5396b8a663f7a78ee5b75a47ee524b40795b265 <58858b8f14803a7eeac297b3ce20f3b21bf2ff66

Linux patch: 0

Linux f5396b8a663f7a78ee5b75a47ee524b40795b265 <beb05f484a1e4a5a66e3678e4b7f3147f651c080

Linux patch: 6.18.57

Affected Packages

euvd linux no fix

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

Oct 23, 2026 - 13:17 EUVD

CVE Published

Oct 23, 2026 - 12:22 cve.org

UNKNOWN (no severity yet)

Threat Intelligence Overview

EPSS Score

0.2%

Top 90% 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.