{"id":"CVE-2026-72489","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72489","summary":"staging: nvec: fix use-after-free in nvec_rx_completed()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: nvec: fix use-after-free in nvec_rx_completed()\n\nIn nvec_rx_completed(), when an incomplete RX transfer is detected,\nnvec_msg_free() is called to return the message back to the pool by\nclearing its 'used' atomic flag. Immediately after this, the code\naccesses nvec->rx->data[0] to check the message type.\n\nSince nvec_msg_free() marks the pool slot as available via atomic_set(),\nany concurrent or subsequent call to nvec_msg_alloc() could claim that\nsame slot and overwrite its data[] array. Reading nvec->rx->data[0] after\nfreeing the message is therefore a use-after-free.\n\nFix this by saving the message type byte before calling nvec_msg_free(),\nthen using the saved value for the battery quirk check.","published":"2026-08-15T05:57:24.948Z","modified":"2026-08-18T03:56:26.733655811Z","cvss":{"score":8.4,"severity":"HIGH","vector":"CVSS:3.1/AV:L/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":"5.10.261"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/08626fcfe12308ca3f8b22c538ba7dee0b2dce7a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/26813881181deb3a32fbb59eadb2599cbe8423f6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5de04caa46b635e180cecbd164e333eca535db94"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b2ea886ebdae44a2394029844a4e78f58e1587d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9f7fe4165a1f1014bdadc8e744c0fd3c2d8c0b89"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a37625c7b688fcf68a54263528eccbabfd7fa17a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bb3d592c7d6c4ec8ac6640c690ca13298e7e8e90"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f19a5bc059051143c489dd6f79a0f9c3bfd13aea"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72489.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72489"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:26.733655811Z"}}