ALSA: bcd2000: Fix a UAF bug on the error path of probing (Linux Linux)

CVE-2022-50229
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.25 % · centile 16 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: bcd2000: Fix a UAF bug on the error path of probing When the driver fails in snd_card_register() at probe time, it will free the 'bcd2k->midi_out_urb' before killing it, which may cause a UAF bug. The following log can reveal it: [ 50.727020] BUG: KASAN: use-after-free in bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] [ 50.727623] Read of size 8 at addr ffff88810fab0e88 by task swapper/4/0 [ 50.729530] Call Trace: [ 50.732899] bcd2000_input_complete+0x1f1/0x2e0 [snd_bcd2000] Fix this by adding usb_kill_urb() before usb_free_urb().

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:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected b47a22290d581277be70e8a597824a4985d39e83 < a718eba7e458e2f40531be3c6b6a0028ca7fcace ; affected b47a22290d581277be70e8a597824a4985d39e83 < 4fc41f7ebb7efca282f1740ea934d16f33c1d109 ; affected b47a22290d581277be70e8a597824a4985d39e83 < 5e7338f4dd92b2f8915a82abfa1dd3ad3464bea0 ; affected b47a22290d581277be70e8a597824a4985d39e83 < 05e0bb8c3c4dde3e21b9c1cf9395afb04e8b24db ; affected b47a22290d581277be70e8a597824a4985d39e83 < 348620464a5c127399ac09b266f494f393661952 ; affected b47a22290d581277be70e8a597824a4985d39e83 < 64ca7f50ad96c2c65ae390b954925a36eabe04aa
Linux · Linuxaffected 3.16 ; unaffected 0 < 3.16 ; unaffected 4.9.326 ≤ 4.9.* ; unaffected 4.14.291 ≤ 4.14.* ; unaffected 4.19.256 ≤ 4.19.* ; unaffected 5.4.211 ≤ 5.4.*

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