net/rds: fix tcp stream corruption with large pages (CVE-2026-97954) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97954

net/rds: fix tcp stream corruption with large pages

Answer in brief

CVE-2026-97954 records a Unknown severity vulnerability in net/rds: fix tcp stream corruption with large pages. 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	>=7875e18e09961d29f30424c5e2e48e704dc3789b <ef3565a418b8309589fe9b5df098a892c9146b06 \|\| >=7875e18e09961d29f30424c5e2e48e704dc3789b <8cbfeb54bf781d9693778aaba133bb58c0285332 \|\| >=7875e18e09961d29f30424c5e2e48e704dc3789b <f4649a716be20ef9272f97a166dea1825ba5b554 \|\| >=7875e18e09961d29f30424c5e2e48e704dc3789b <2ac09b5353fe6858411fdc8c6efa60d832e20f13	ef3565a418b8309589fe9b5df098a892c9146b06, 8cbfeb54bf781d9693778aaba133bb58c0285332, f4649a716be20ef9272f97a166dea1825ba5b554, 2ac09b5353fe6858411fdc8c6efa60d832e20f13
Linux/Linuxgeneric	2.6.30	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to ef3565a418b8309589fe9b5df098a892c9146b06 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: net/rds: fix tcp stream corruption with large pages rds_message_map_pages() assigns PAGE_SIZE bytes to every scatterlist entry, even when total_len ends in a partial page. The RDS congestion map is defined as 8192 bytes, so on systems with PAGE_SIZE greater than 8192 the scatterlist maps bytes beyond the end of the congestion map. RDS-TCP transmits the SG contents according to those lengths, so the extra bytes become part of the TCP RDS stream and are interpreted as subsequent RDS message headers, corrupting the stream. Limit the final scatterlist mapping to the number of bytes remaining. This has no effect on systems with a 4K page size and allows RDS-TCP to be used on systems with 16K and larger page sizes. The RDS selftest, which previously hung on 16K pages, now passes.

Quoted source text, attributed separately from HOL analysis.