USB: serial: cypress_m8: validate interrupt packet headers (Linux Linux)

CVE-2026-63902
HIGH 7.1

En bref

Source
NVD
EPSS
EPSS 0.17 % · centile 6 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: cypress_m8: validate interrupt packet headers cypress_read_int_callback() parses the interrupt-in buffer according to the selected Cypress packet format. Format 1 has a two-byte status/count header and format 2 has a one-byte combined status/count header. The usb-serial core sizes the interrupt-in buffer from the endpoint descriptor's wMaxPacketSize, and successful interrupt transfers can complete short when URB_SHORT_NOT_OK is not set. Check that the completed packet contains the selected header before reading it. Malformed short reports are ignored and the interrupt URB is resubmitted through the existing retry path, preventing out-of-bounds header-byte reads. KASAN report as below: KASAN slab-out-of-bounds in cypress_read_int_callback+0x240/0x7f0 Read of size 1 Call trace: cypress_read_int_callback() (drivers/usb/serial/cypress_m8.c:1009) __usb_hcd_giveback_urb() dummy_timer() [ johan: use constants in header length sanity checks ]

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 3416eaa1f8f8d516b77de514e14cf8da256d28fb < fcef31a5a85ccf3c313449a866ec6ed7e4132425 ; affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb < aaa66708bfb1dca2acd219d1c1582f9f6d5492cb ; affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb < 44f9bab8df7750a1e2a4d6cc22d7c9c2dc096aed ; affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb < be50533fe7068e86eb7adb81988e6d6a3f6dfe53 ; affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb < 90664556916de22467097d4c8ceb716d597a5c32 ; affected 3416eaa1f8f8d516b77de514e14cf8da256d28fb < ae03453f2c809ca3cf73753269fa6184dea7160f
Linux · Linuxaffected 2.6.26 ; unaffected 0 < 2.6.26 ; 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