{"id":"CVE-2026-68144","title":"phonet: pep: fix use-after-free in pep_get_sb()","summary":"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 …","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < c4a52cb4da8d57d060b1d52085d25147a238dac2","Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < df198743859fefba2f824115f8151dd62d7ad6d8","Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 1d81e19fc57a5ee55b4497d01bc0510d76fb9578","Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 8d931a75a38b9bb584a4071f5ebbd52755fc35ee","Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 17f78c0c0d41d738ee236eb6e841e39395188054","Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < a48a889b60f73edb0399a8b08284a2ab0bd0295f","Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 25e3641beb51333bfbb155af2fd2573a61113af2","Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 0f71f852a96af9685858ce59fda34ecbf85c283d","Linux 2.6.28"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-16T15:44:46.818096Z"},"published":"2026-08-10","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:52:59.934Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68144","references":[{"url":"https://git.kernel.org/stable/c/c4a52cb4da8d57d060b1d52085d25147a238dac2"},{"url":"https://git.kernel.org/stable/c/df198743859fefba2f824115f8151dd62d7ad6d8"},{"url":"https://git.kernel.org/stable/c/1d81e19fc57a5ee55b4497d01bc0510d76fb9578"},{"url":"https://git.kernel.org/stable/c/8d931a75a38b9bb584a4071f5ebbd52755fc35ee"},{"url":"https://git.kernel.org/stable/c/17f78c0c0d41d738ee236eb6e841e39395188054"},{"url":"https://git.kernel.org/stable/c/a48a889b60f73edb0399a8b08284a2ab0bd0295f"},{"url":"https://git.kernel.org/stable/c/25e3641beb51333bfbb155af2fd2573a61113af2"},{"url":"https://git.kernel.org/stable/c/0f71f852a96af9685858ce59fda34ecbf85c283d"}],"tags":["cve.org"],"epss":0.00536,"epssPercentile":0.43957,"ingestedAt":"2026-10-16T17:24:46.844Z","slug":"CVE-2026-68144","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < c4a52cb4da8d57d060b1d52085d25147a238dac2`\n- `Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < df198743859fefba2f824115f8151dd62d7ad6d8`\n- `Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 1d81e19fc57a5ee55b4497d01bc0510d76fb9578`\n- `Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 8d931a75a38b9bb584a4071f5ebbd52755fc35ee`\n- `Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 17f78c0c0d41d738ee236eb6e841e39395188054`\n- `Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < a48a889b60f73edb0399a8b08284a2ab0bd0295f`\n- `Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 25e3641beb51333bfbb155af2fd2573a61113af2`\n- `Linux >= 9641458d3ec42def729fde64669abf07f3220cd5 < 0f71f852a96af9685858ce59fda34ecbf85c283d`\n- `Linux 2.6.28`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}