CVE-2026-68144phonet: pep: fix use-after-free in pep_get_sb()
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: phonet: pep: fix use-after-free in pep_get_sb() pep_get_sb() doesn't consider that pskb_may_pull() might have relocated the skb data, and continue to access the older pointer, causing UAF. Reproduced under KASAN: BUG: KASAN: slab-use-after-free in pep_get_sb+0x234/0x3b0 Read of size 1 at addr ff11000105510f50 by task repro/157 pep_get_sb+0x234/0x3b0 pipe_handler_do_rcv+0x5f7/0xa10 pep_do_rcv+0x203/0x410 __sk_receive_skb+0x471/0x4a0 phonet_rcv+0x5b3/0x6c0 __netif_receive_skb+0xcc/0x1d0 Refetch the header with skb_header_pointer() after pskb_may_pull(), so the possibly stale pointer is no longer dereferenced. There are better ways to solve this, but, this is the less instrusive one.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 9641458d3ec42def729fde64669abf07f3220cd5 before c4a52cb4da8d57d060b1d52085d25147a238dac2; from 9641458d3ec42def729fde64669abf07f3220cd5 before df198743859fefba2f824115f8151dd62d7ad6d8; 9641458d3ec42def729fde64669abf07f3220cd5 builds before 1d81e19fc57a5ee55b4497d01bc0510d76fb9578; 9641458d3ec42def729fde64669abf07f3220cd5 builds before 8d931a75a38b9bb584a4071f5ebbd52755fc35ee; 9641458d3ec42def729fde64669abf07f3220cd5 builds before 17f78c0c0d41d738ee236eb6e841e39395188054; from 9641458d3ec42def729fde64669abf07f3220cd5 before a48a889b60f73edb0399a8b08284a2ab0bd0295f; 9641458d3ec42def729fde64669abf07f3220cd5 builds before 25e3641beb51333bfbb155af2fd2573a61113af2; 9641458d3ec42def729fde64669abf07f3220cd5 builds before 0f71f852a96af9685858ce59fda34ecbf85c283d | CNA record |
References
- https://git.kernel.org/stable/c/c4a52cb4da8d57d060b1d52085d25147a238dac2
- https://git.kernel.org/stable/c/df198743859fefba2f824115f8151dd62d7ad6d8
- https://git.kernel.org/stable/c/1d81e19fc57a5ee55b4497d01bc0510d76fb9578
- https://git.kernel.org/stable/c/8d931a75a38b9bb584a4071f5ebbd52755fc35ee
- https://git.kernel.org/stable/c/17f78c0c0d41d738ee236eb6e841e39395188054
- https://git.kernel.org/stable/c/a48a889b60f73edb0399a8b08284a2ab0bd0295f
- https://git.kernel.org/stable/c/25e3641beb51333bfbb155af2fd2573a61113af2
- https://git.kernel.org/stable/c/0f71f852a96af9685858ce59fda34ecbf85c283d
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.