VDB
CVE-2026-31623
CVE-2026-31623
PUBLISHED
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.
EPSS 0.02% · 3.4th percentile
Risk Scores
EPSS Score
0.02%
3.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| linux | linux_kernel | 0, 0, 0 |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
Timeline
- Apr 24, 2026 CVE Published
- Apr 24, 2026 Security Advisory
- Apr 27, 2026 Security Advisory
- Apr 28, 2026 CVE Updated
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
References
- https://git.kernel.org/stable/c/a23b1b1aaf41e174181d5853a70e65d4d01e648c url
- https://git.kernel.org/stable/c/c183d5775129a0a7495bd61a6e57ec230dcf01e5 url
- https://git.kernel.org/stable/c/ebf75c6301c4972a87542ebf2d994c6391eb5d46 url
- https://git.kernel.org/stable/c/9989938d13cc5ba8447eeed5a61acfcf61bc6801 url
- https://nvd.nist.gov/vuln/detail/CVE-2026-31623 advisory