dm: fix a race condition in retrieve_deps (Linux Linux)

CVE-2023-54324
Non disponible

En bref

Source
NVD
EPSS
EPSS 0.19 % · centile 8 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: dm: fix a race condition in retrieve_deps There's a race condition in the multipath target when retrieve_deps races with multipath_message calling dm_get_device and dm_put_device. retrieve_deps walks the list of open devices without holding any lock but multipath may add or remove devices to the list while it is running. The end result may be memory corruption or use-after-free memory access. See this description of a UAF with multipath_message(): https://listman.redhat.com/archives/dm-devel/2022-October/052373.html Fix this bug by introducing a new rw semaphore "devices_lock". We grab devices_lock for read in retrieve_deps and we grab it for write in dm_get_device and dm_put_device.

Références

Références européennes

Avis du CERT-FR

Produits affectés

ProduitVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < dbf1a719850577bb51fc7512a3972994b797a17b ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 38f6e5ae5d9ff4a4050ea6f7b543d5d5a4e087cf ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f6007dce0cd35d634d9be91ef3515a6385dcee16
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 6.1.56 ≤ 6.1.* ; unaffected 6.5.5 ≤ 6.5.* ; unaffected 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