CVE-2026-31623
5.5 MEDIUMIn the Linux kernel, the following vulnerability has been resolved: net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete() A m...
Published: 2026-04-24 · Last updated: 2026-06-01
Severity and scoring
- CVSS
- 5.5 MEDIUM
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-120
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
Description
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-31623
- [Other]https://git.kernel.org/stable/c/0c5c65a17db729fc63ab656bdaaf0e675a9dbeac
- [Patch]https://git.kernel.org/stable/c/600dc40554dc5ad1e6f3af51f700228033f43ea7
- [Other]https://git.kernel.org/stable/c/6053620fdbcd89fa7e755644efdaab78e0daaae7
- [Other]https://git.kernel.org/stable/c/6807ff49bf796b3823b1e29f97b69316a40a9a94
- [Patch]https://git.kernel.org/stable/c/9989938d13cc5ba8447eeed5a61acfcf61bc6801
- [Patch]https://git.kernel.org/stable/c/a23b1b1aaf41e174181d5853a70e65d4d01e648c
- [Patch]https://git.kernel.org/stable/c/c183d5775129a0a7495bd61a6e57ec230dcf01e5
- [Patch]https://git.kernel.org/stable/c/d4e1946bea8d6441835eb3fd09b19237ba366a6f
- [Patch]https://git.kernel.org/stable/c/ebf75c6301c4972a87542ebf2d994c6391eb5d46
Related CVEs
Same vendor
- CVE-2026-46273 — In the Linux kernel, the following vulnerability has been resolved: ibmveth: Disable GSO for packets with small MSS Some physical adapt... (8.6 HIGH)
- CVE-2026-46272 — In the Linux kernel, the following vulnerability has been resolved: coresight: tmc-etr: Fix race condition between sysfs and perf mode ... (4.7 MEDIUM)
- CVE-2026-46271 — In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: do WoW offloads only on primary link In case of multi... (7.8 HIGH)
- CVE-2026-46270 — In the Linux kernel, the following vulnerability has been resolved: power: supply: rt9455: Fix use-after-free in power_supply_changed() ... (8.4 HIGH)
- CVE-2026-46269 — In the Linux kernel, the following vulnerability has been resolved: pinctrl: canaan: k230: Fix NULL pointer dereference when parsing dev... (5.5 MEDIUM)
Same CWE
- CVE-2026-12328 — Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151 (8.1 HIGH)
- CVE-2026-12192 — A vulnerability was determined in GALAYOU Y4 1.0.0 (8.8 HIGH)
- CVE-2026-36818 — Shenzhen Tenda Technology Co., Ltd Tenda W20E v15.11.0.6 was discovered to contain a buffer overflow in the wewifiWhiteUserInfo parameter... (7.5 HIGH)
- CVE-2026-36817 — Shenzhen Tenda Technology Co., Ltd Tenda W15E v15.11.0.10 was discovered to contain a buffer overflow in the webAuthWhiteUserInfo paramet... (7.5 HIGH)
- CVE-2026-36816 — Shenzhen Tenda Technology Co., Ltd Tenda W15E v15.11.0.10 was discovered to contain a buffer overflow in the wewifiWhiteUserInfo paramete... (7.5 HIGH)