{"id":"CVE-2026-68144","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-68144","summary":"phonet: pep: fix use-after-free in pep_get_sb()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: fix use-after-free in pep_get_sb()\n\npep_get_sb() doesn't consider that pskb_may_pull() might have relocated\nthe skb data, and continue to access the older pointer, causing UAF.\n\nReproduced under KASAN:\n\n  BUG: KASAN: slab-use-after-free in pep_get_sb+0x234/0x3b0\n  Read of size 1 at addr ff11000105510f50 by task repro/157\n   pep_get_sb+0x234/0x3b0\n   pipe_handler_do_rcv+0x5f7/0xa10\n   pep_do_rcv+0x203/0x410\n   __sk_receive_skb+0x471/0x4a0\n   phonet_rcv+0x5b3/0x6c0\n   __netif_receive_skb+0xcc/0x1d0\n\nRefetch the header with skb_header_pointer() after pskb_may_pull(), so\nthe possibly stale pointer is no longer dereferenced. There are better\nways to solve this, but, this is the less instrusive one.","published":"2026-08-10T11:59:08.437Z","modified":"2026-08-14T04:03:55.639492010Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.6.148"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0f71f852a96af9685858ce59fda34ecbf85c283d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/17f78c0c0d41d738ee236eb6e841e39395188054"},{"type":"WEB","url":"https://git.kernel.org/stable/c/25e3641beb51333bfbb155af2fd2573a61113af2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8d931a75a38b9bb584a4071f5ebbd52755fc35ee"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a48a889b60f73edb0399a8b08284a2ab0bd0295f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68144.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68144"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-14T04:03:55.639492010Z"}}