net/rds: handle zerocopy send cleanup before the message is queued (Linux Linux)

CVE-2026-43502
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.32 % · centile 25 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net/rds: handle zerocopy send cleanup before the message is queued A zerocopy send can fail after user pages have been pinned but before the message is attached to the sending socket. The purge path currently infers zerocopy state from rm->m_rs, so an unqueued message can be cleaned up as if it owned normal payload pages. However, zerocopy ownership is really determined by the presence of op_mmp_znotifier, regardless of whether the message has reached the socket queue. Capture op_mmp_znotifier up front in rds_message_purge() and use it as the cleanup discriminator. If the message is already associated with a socket, keep the existing completion path. Otherwise, drop the pinned page accounting directly and release the notifier before putting the payload pages. This keeps early send failure cleanup consistent with the zerocopy lifetime rules without changing the normal queued completion path.

Faiblesses (CWE)

  • CWE-401 — Mémoire non libérée après sa durée de vie utile

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 < e9aefdc5c53fe9aed108c14e3d155710a1bb14c9 ; affected 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 < 46662f7dc59475995609bf3e9d27eb36f4acf26f ; affected 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 < 1e262db7675e27f42c3f3f47d6011855f4454f24 ; affected 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 < 21d70744e6d3bbf9293aa1ee6fba7c53ad75275e ; affected 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 < 3abc8983b2bae3f487f77d9da5527d7d6b210d46 ; affected 0cebaccef3acbdfbc2d85880a2efb765d2f4e2e3 < 14ef6fd18db2494098b21e0471bf27a1d8e9993e
Linux · Linuxaffected 4.17 ; unaffected 0 < 4.17 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.140 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD