{"id":"CVE-2026-74313","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74313","summary":"vduse: hold vduse_lock across IDR lookup in open path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvduse: hold vduse_lock across IDR lookup in open path\n\nvduse_dev_open() looks up struct vduse_dev through the IDR and then\nacquires dev->lock only after vduse_lock has been dropped.\n\nThis leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the\nsame object from the IDR and free it before the open path locks the\ndevice, leading to a use-after-free.\n\nClose this race by keeping vduse_lock held until dev->lock has been\nacquired in the open path, matching the lock ordering already used by\nthe destroy path.","published":"2026-08-15T05:58:12.058Z","modified":"2026-08-18T03:56:46.195350647Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.15.212"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/35483c5306e09b3190ff937089d404a78012695c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5c1560be8aa6849356455af67518d35c551cbd95"},{"type":"WEB","url":"https://git.kernel.org/stable/c/79e12c891940b0c4c75881b7fd82a8cbb8ac97be"},{"type":"WEB","url":"https://git.kernel.org/stable/c/93ed4692f2299a40346025979f40e4a9b7b33af7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d94e2947203aead590fd63f667d316d4475d65af"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e440e077748939839d9f76e24383b76b785f80ce"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74313.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74313"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:46.195350647Z"}}