phonet: pep: fix use-after-free in pep_get_sb()

{
  "id": "5e2272fd175b3a7c9b7edb1586e105159da8d5b1e90c6800b13169cb2d67d3c7",
  "url": "https://osv.dev/vulnerability/CVE-2026-68144",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "phonet: pep: fix use-after-free in pep_get_sb()",
    "summary": "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.",
    "evidence": "osv:CVE-2026-68144",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
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        "prerequisites": [],
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    "severity": "critical",
    "structured": {
      "id": "CVE-2026-68144",
      "aliases": [
        "CVE-2026-68144"
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
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      "modified": "2026-10-28T02:30:36.626808119Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0f71f852a96af9685858ce59fda34ecbf85c283d",
        "https://git.kernel.org/stable/c/17f78c0c0d41d738ee236eb6e841e39395188054",
        "https://git.kernel.org/stable/c/1d81e19fc57a5ee55b4497d01bc0510d76fb9578",
        "https://git.kernel.org/stable/c/25e3641beb51333bfbb155af2fd2573a61113af2",
        "https://git.kernel.org/stable/c/8d931a75a38b9bb584a4071f5ebbd52755fc35ee",
        "https://git.kernel.org/stable/c/a48a889b60f73edb0399a8b08284a2ab0bd0295f",
        "https://git.kernel.org/stable/c/c4a52cb4da8d57d060b1d52085d25147a238dac2",
        "https://git.kernel.org/stable/c/df198743859fefba2f824115f8151dd62d7ad6d8",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68144.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-68144",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68144.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-68144",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503972,
  "published_at": "2026-08-10T11:59:08.437+00:00"
}