xfrm: esp: restore combined single-frag length gate (Linux Linux)

CVE-2026-63912
CRITICAL 9.8

En bref

Source
NVD
EPSS
EPSS 0.71 % · centile 54 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: restore combined single-frag length gate The ESP out-of-place fast path appends the trailer in esp_output_head() before esp_output_tail() allocates the destination page frag. The head-side gate currently checks skb->data_len and tailen separately, but the tail code allocates a single destination frag from the combined post-trailer skb->data_len. Reject the page-frag fast path when the combined aligned length exceeds a page. Otherwise skb_page_frag_refill() may fall back to a single page while the destination sg still spans the combined skb->data_len. Restore this combined-length page gate for both IPv4 and IPv6.

Faiblesses (CWE)

  • CWE-125 — Lecture hors limites

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/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 c075c3ea031757f8ea2d34567565b61a868c08d5 < 566295735530ee513326049b0540f32ec050bf2e ; affected a583f2f3c8788bffd7fd7baeb76bd6d80543d7ea < 5d7ab86e2b6bc23054616bf6ac562013bf60af8c ; affected 5bd8baab087dff657e05387aee802e70304cc813 < 36519e3d941fc99d3b52c134dbaf311f987a4708 ; affected 5bd8baab087dff657e05387aee802e70304cc813 < 322e48187e0245ab2fff6fec2220b0cae677dbec ; affected 5bd8baab087dff657e05387aee802e70304cc813 < b84091ceddc9f133229dceab3ccc930bf27f9cba ; affected 5bd8baab087dff657e05387aee802e70304cc813 < c093468aea8277f77272a4f199b2e15e19cabb59
Linux · Linuxaffected 5.18 ; unaffected 0 < 5.18 ; unaffected 5.10.259 ≤ 5.10.* ; unaffected 5.15.210 ≤ 5.15.* ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 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