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 |
| Last Updated | Jun 1, 2026 |
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Affected Versions
Linux / Linux
87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < 6807ff49bf796b3823b1e29f97b69316a40a9a94 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < 0c5c65a17db729fc63ab656bdaaf0e675a9dbeac 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < 6053620fdbcd89fa7e755644efdaab78e0daaae7 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < d4e1946bea8d6441835eb3fd09b19237ba366a6f 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < a23b1b1aaf41e174181d5853a70e65d4d01e648c 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < c183d5775129a0a7495bd61a6e57ec230dcf01e5 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < ebf75c6301c4972a87542ebf2d994c6391eb5d46 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < 9989938d13cc5ba8447eeed5a61acfcf61bc6801 87cf65601e1709e57f7e28f0f7b3eb0a992c1782 < 600dc40554dc5ad1e6f3af51f700228033f43ea7
Linux / Linux
2.6.31
References
git.kernel.org: https://git.kernel.org/stable/c/6807ff49bf796b3823b1e29f97b69316a40a9a94 git.kernel.org: https://git.kernel.org/stable/c/0c5c65a17db729fc63ab656bdaaf0e675a9dbeac git.kernel.org: https://git.kernel.org/stable/c/6053620fdbcd89fa7e755644efdaab78e0daaae7 git.kernel.org: https://git.kernel.org/stable/c/d4e1946bea8d6441835eb3fd09b19237ba366a6f 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 git.kernel.org: https://git.kernel.org/stable/c/600dc40554dc5ad1e6f3af51f700228033f43ea7