{"id":"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.","modified":"2026-08-15T11:30:57.191087701Z","published":"2026-08-10T11:59:08.437Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68144.json","cna_assigner":"Linux"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"9641458d3ec42def729fde64669abf07f3220cd5"},{"fixed":"8d931a75a38b9bb584a4071f5ebbd52755fc35ee"},{"fixed":"17f78c0c0d41d738ee236eb6e841e39395188054"},{"fixed":"a48a889b60f73edb0399a8b08284a2ab0bd0295f"},{"fixed":"25e3641beb51333bfbb155af2fd2573a61113af2"},{"fixed":"0f71f852a96af9685858ce59fda34ecbf85c283d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68144.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.28"},{"fixed":"6.6.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.101"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68144.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}