USB: core: Fix duplicate endpoint bug by clearing reserved bits in the descriptor (Linux Linux)

CVE-2024-41035
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.30 % · centile 23 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix duplicate endpoint bug by clearing reserved bits in the descriptor Syzbot has identified a bug in usbcore (see the Closes: tag below) caused by our assumption that the reserved bits in an endpoint descriptor's bEndpointAddress field will always be 0. As a result of the bug, the endpoint_is_duplicate() routine in config.c (and possibly other routines as well) may believe that two descriptors are for distinct endpoints, even though they have the same direction and endpoint number. This can lead to confusion, including the bug identified by syzbot (two descriptors with matching endpoint numbers and directions, where one was interrupt and the other was bulk). To fix the bug, we will clear the reserved bits in bEndpointAddress when we parse the descriptor. (Note that both the USB-2.0 and USB-3.1 specs say these bits are "Reserved, reset to zero".) This requires us to make a copy of the descriptor earlier in usb_parse_endpoint() and use the copy instead of the original when checking for duplicates.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 0a8fd1346254974c3a852338508e4a4cddbb35f1 < d8418fd083d1b90a6c007cf8dcf81aeae274727b ; affected 0a8fd1346254974c3a852338508e4a4cddbb35f1 < 60abea505b726b38232a0ef410d2bd1994a77f78 ; affected 0a8fd1346254974c3a852338508e4a4cddbb35f1 < d09dd21bb5215d583ca9a1cb1464dbc77a7e88cf ; affected 0a8fd1346254974c3a852338508e4a4cddbb35f1 < 2bd8534a1b83c65702aec3cab164170f8e584188 ; affected 0a8fd1346254974c3a852338508e4a4cddbb35f1 < 9edcf317620d7c6a8354911b69b874cf89716646 ; affected 0a8fd1346254974c3a852338508e4a4cddbb35f1 < 647d61aef106dbed9c70447bcddbd4968e67ca64
Linux · Linuxaffected 4.10 ; unaffected 0 < 4.10 ; unaffected 4.19.318 ≤ 4.19.* ; unaffected 5.4.280 ≤ 5.4.* ; unaffected 5.10.222 ≤ 5.10.* ; unaffected 5.15.163 ≤ 5.15.*

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