CVE record · CVE-2026-89526

svcrdma: Validate Read chunk positions before reconstruction

CVSS 9.8 CriticalCriticalEPSS 0.0068 · 53rd percentile

Critical, because:

CVSS score 9.8: 9.0 or more.

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:44 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Linux	Linux	affected d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 to before 6388f2ed36c10f59d926735b92c2b152d2c635e5 git affected d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 to before 3861eeabaebe243050952b34063763527c44e1fe git affected d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 to before 5ab3f6d882fe07ae5e61d0bcfeea00b9409155c2 git affected d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 to before f84ec84d8d4bc65f9ae23372570349687f66fa39 git affected d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 to before 577097455d084610fc31e91e6a61c5793b6f04ba git affected d96962e6d0e281bab6a48e83b42f5dce6eb28bf4 to before 3779b7b9e7d1c8ba4738f9d327de3b0288cefe9b git Other versions: unaffected
Linux	Linux	affected 5.11 unaffected before 5.11 semver unaffected 6.1.191 to 6.1., inclusive semver unaffected 6.6.160 to 6.6., inclusive semver unaffected 6.12.109 to 6.12., inclusive semver unaffected 6.18.50 to 6.18., inclusive semver unaffected 7.2.4 to 7.2., inclusive semver unaffected 7.3 to , inclusive original_commit_for_fix Other versions: affected

Identifiers: CVE-2026-89526
CNA: Linux
Tags: Linux kernel
Published: 11 Sept 2026
Updated: 30 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Linux kernel's svcrdma (RPC/RDMA server) code is affected from 5.11 until fixed. A remote client can send Read chunk positions that are not checked against the inline request body, which can expose adjacent kernel slab memory to the client. Upgrade to a fixed release, such as 6.1.191, 6.6.160, 6.12.109 or 6.18.50 or later; no workaround is listed.

Written 12 Nov 2026.

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.8	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (Linux)

CISA KEV Not listed.
EPSS 0.0068, the 53rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 11 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.