5.5

CVE-2026-31623

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.31 < 6.6.136
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.83
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.24
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.14
Linux ≫ Linux Kernel Version >= 7.0 < 7.0.1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.025
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

https://git.kernel.org/stable/c/a23b1b1aaf41e174181d5853a70e65d4d01e648c
Patch
https://git.kernel.org/stable/c/c183d5775129a0a7495bd61a6e57ec230dcf01e5
Patch
https://git.kernel.org/stable/c/ebf75c6301c4972a87542ebf2d994c6391eb5d46
Patch
https://git.kernel.org/stable/c/9989938d13cc5ba8447eeed5a61acfcf61bc6801
Patch
https://git.kernel.org/stable/c/600dc40554dc5ad1e6f3af51f700228033f43ea7
Patch
https://git.kernel.org/stable/c/d4e1946bea8d6441835eb3fd09b19237ba366a6f
Patch
https://git.kernel.org/stable/c/0c5c65a17db729fc63ab656bdaaf0e675a9dbeac
https://git.kernel.org/stable/c/6053620fdbcd89fa7e755644efdaab78e0daaae7
https://git.kernel.org/stable/c/6807ff49bf796b3823b1e29f97b69316a40a9a94