CVE-2026-31623
net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 24, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a23b1b1aaf41e174181d5853a70e65d4d01e648c 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c183d5775129a0a7495bd61a6e57ec230dcf01e5 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ebf75c6301c4972a87542ebf2d994c6391eb5d46 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9989938d13cc5ba8447eeed5a61acfcf61bc6801
Linux / Linux
All versions affected References
git.kernel.org: https://git.kernel.org/stable/c/a23b1b1aaf41e174181d5853a70e65d4d01e648c git.kernel.org: https://git.kernel.org/stable/c/c183d5775129a0a7495bd61a6e57ec230dcf01e5 git.kernel.org: https://git.kernel.org/stable/c/ebf75c6301c4972a87542ebf2d994c6391eb5d46 git.kernel.org: https://git.kernel.org/stable/c/9989938d13cc5ba8447eeed5a61acfcf61bc6801