net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete() (Linux Linux)

CVE-2026-31623
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.13 % · percentile 2 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete() A malicious USB device claiming to be a CDC Phonet modem can overflow the skb_shared_info->frags[] array by sending an unbounded sequence of full-page bulk transfers. Drop the skb and increment the length error when the frag limit is reached. This matches the same fix that commit f0813bcd2d9d ("net: wwan: t7xx: fix potential skb->frags overflow in RX path") did for the t7xx driver.

Weaknesses (CWE)

  • CWE-120 — Buffer Copy without Checking Size of Input

References

Scores

VersionScoreVectorScored by
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)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < 6807ff49bf796b3823b1e29f97b69316a40a9a94 ; affected 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < 0c5c65a17db729fc63ab656bdaaf0e675a9dbeac ; affected 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < 6053620fdbcd89fa7e755644efdaab78e0daaae7 ; affected 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < d4e1946bea8d6441835eb3fd09b19237ba366a6f ; affected 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < a23b1b1aaf41e174181d5853a70e65d4d01e648c ; affected 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < c183d5775129a0a7495bd61a6e57ec230dcf01e5
Linux · Linuxaffected 2.6.31 ; unaffected 0 < 2.6.31 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.136 ≤ 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