ipvs: clear the svc scheduler ptr early on edit (Linux Linux)

CVE-2026-53270
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.16 % · centile 5 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: ipvs: clear the svc scheduler ptr early on edit ip_vs_edit_service() while unbinding the old scheduler clears the svc->scheduler ptr after the scheduler module initiates RCU callbacks. This can cause packets to use the old scheduler at the time when svc->sched_data is already freed after RCU grace period. Fix it by clearing the ptr early in ip_vs_unbind_scheduler(), before the done_service method schedules any RCU callbacks. Also, if the new scheduler fails to initialize when replacing the old scheduler, try to restore the old scheduler while still returning the error code.

Faiblesses (CWE)

  • CWE-416 — Utilisation après libération

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 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < d10730a1f2caf08088e0db1b19b242f3e6fa5f06 ; affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < e4feec3174036ba772006be74beee0efa09a9eb8 ; affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < 7d4f5004511757e3984901ffb412fcf858d80ed5 ; affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < c6376b9b1b4d2bad638256b1b3588e073344ae69 ; affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < 14e4689c113b4c06af1069364ade24fdd7055f33 ; affected 05f00505a89acd21f5d0d20f5797dfbc4cf85243 < 25918720ba97f974a4f8d433b5a0132c5b43f6f3
Linux · Linuxaffected 4.2 ; unaffected 0 < 4.2 ; 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