{"id":"CVE-2026-74306","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74306","summary":"vfio/qat: fix f_pos race in qat_vf_resume_write()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/qat: fix f_pos race in qat_vf_resume_write()\n\nqat_vf_resume_write() checks filp->f_pos before taking migf->lock, but\ncopies into the migration-state buffer after taking the lock and\nre-reading the shared file position.\n\nTwo concurrent writers could therefore pass the bounds check with the\nold offset, then have the second writer copy after the first advanced\nf_pos, writing past the end of the migration-state buffer.\n\nTake migf->lock before doing the boundary checks.","published":"2026-08-15T05:58:07.313Z","modified":"2026-08-18T03:56:56.808802668Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.97"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4ec5e932e636896e97e4c6a8205b0ac76d52421a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6465af0004dc1b067129a26ef44f19cdf13bbce6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b6fd7a40a66485c8aa8156d8fcf50b95cb8ba281"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d416dcefdbac90d96b22485fd93f28229ad9984b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74306.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74306"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:56.808802668Z"}}