net: usb: kalmia: bound RX frame length in kalmia_rx_fixup() (Linux Linux)

CVE-2026-64351
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.13 % · centile 3 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: kalmia: bound RX frame length in kalmia_rx_fixup() kalmia_rx_fixup() computes usb_packet_length = skb->len - (2 * KALMIA_HEADER_LENGTH) as a u16, guarded only by a pre-loop check that skb->len is at least KALMIA_HEADER_LENGTH, which is 6. A device can deliver a short bulk-IN frame with skb->len in the 6 to 11 range, or leave a short trailing remainder on a later loop iteration. Either case underflows usb_packet_length to about 65530. That bypasses the usb_packet_length < ether_packet_length truncation path. The device-supplied ether_packet_length, a le16 up to 65535 read from header_start[2], then drives a memcmp() and the following skb_trim() and skb_pull() past the end of the rx buffer. The rx buffer is hard_mtu * 10, which is 14000 bytes. That is an out of bounds read. Require both the start and end framing headers to be present before subtracting them, on every loop iteration.

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 d40261236e8e278cb1936cb5e934262971692b10 < 391706889a5112feafdc0c68db3ecc7ed325d09c ; affected d40261236e8e278cb1936cb5e934262971692b10 < aa4eef2cbb66ea3dfcfc24bdce798dd78a81b54b ; affected d40261236e8e278cb1936cb5e934262971692b10 < 2d04c37ed4e1d0f733ad39ec35b5a5d8818b4f4a ; affected d40261236e8e278cb1936cb5e934262971692b10 < 46ab32870d010e9a057bc5659cea22b7e728ca88 ; affected d40261236e8e278cb1936cb5e934262971692b10 < c466097d85d52f3aa200736cb4759e66d4bbf6e3 ; affected d40261236e8e278cb1936cb5e934262971692b10 < e24eb271061db384a3c3ef6f107fe515e68ef222
Linux · Linuxaffected 3.0 ; unaffected 0 < 3.0 ; unaffected 5.10.261 ≤ 5.10.* ; unaffected 5.15.212 ≤ 5.15.* ; unaffected 6.1.178 ≤ 6.1.* ; unaffected 6.6.145 ≤ 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