ipvs: reject invalid states in connection template sync records (CVE-2026-97596) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97596

ipvs: reject invalid states in connection template sync records

Answer in brief

CVE-2026-97596 records a Unknown severity vulnerability in ipvs: reject invalid states in connection template sync records. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=275411430f892407b885be1de2548b2e632892c3 <fc10dc4511e6e2e2b4098ee115c8e5639471f23d \|\| >=275411430f892407b885be1de2548b2e632892c3 <50c3f06222eafe9cca7ca51a0ef83311d7cab353 \|\| >=275411430f892407b885be1de2548b2e632892c3 <0c61f7d8e18a978aec2a16d9acd5f682f1c72476 \|\| >=275411430f892407b885be1de2548b2e632892c3 <74cb39735b6cd0aff4b5584158f09376fd97aadf	fc10dc4511e6e2e2b4098ee115c8e5639471f23d, 50c3f06222eafe9cca7ca51a0ef83311d7cab353, 0c61f7d8e18a978aec2a16d9acd5f682f1c72476, 74cb39735b6cd0aff4b5584158f09376fd97aadf
Linux/Linuxgeneric	4.19	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to fc10dc4511e6e2e2b4098ee115c8e5639471f23d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ipvs: reject invalid states in connection template sync records IPVS sync receivers validate protocol states before creating or updating a connection. For connection templates, however, they only log states outside the template state range and still store the value in the connection. A template can be returned by ordinary connection lookup. TCP and SCTP then use the invalid state as an index into their transition tables. Reject invalid template states in both sync protocol versions before looking up or modifying a connection. The version 1 path handles both IPv4 and IPv6 records.

Quoted source text, attributed separately from HOL analysis.