CVE-2026-31623
net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.31
References 9
git.kernel.org
- stable/c/6807ff49bf796b3823b1e29f97b69316a40a9a94
- stable/c/0c5c65a17db729fc63ab656bdaaf0e675a9dbeac
- stable/c/6053620fdbcd89fa7e755644efdaab78e0daaae7
- stable/c/d4e1946bea8d6441835eb3fd09b19237ba366a6f
- stable/c/a23b1b1aaf41e174181d5853a70e65d4d01e648c
- stable/c/c183d5775129a0a7495bd61a6e57ec230dcf01e5
- stable/c/ebf75c6301c4972a87542ebf2d994c6391eb5d46
- stable/c/9989938d13cc5ba8447eeed5a61acfcf61bc6801
- stable/c/600dc40554dc5ad1e6f3af51f700228033f43ea7