{"id":"CVE-2026-64118","summary":"qed: fix double free in qed_cxt_tables_alloc()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nqed: fix double free in qed_cxt_tables_alloc()\n\nIf one of the later PF or VF CID bitmap allocations fails,\nqed_cid_map_alloc() jumps to cid_map_fail and frees the previously\nallocated CID bitmaps before returning an error. qed_cxt_tables_alloc()\nthen calls qed_cxt_mngr_free(), which invokes qed_cid_map_free()\nagain.\n\nFix this by setting each CID bitmap pointer to NULL after bitmap_free()\nto avoid double free.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1-rc3.\n\nRuntime reproduction was not attempted because exercising the failing\nallocation path requires device-specific setup.","modified":"2026-07-22T05:29:59.349456308Z","published":"2026-07-19T15:40:17.643Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64118.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64118.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64118"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"fe56b9e6a8d957d6a20729d626027f800c17a2da"},{"fixed":"9fe030719bd083b766602692ee96c8c985798e3c"},{"fixed":"06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227"},{"fixed":"8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb"},{"fixed":"3904b993cc17ec5d7c5d3b57dbd0b775dafb9684"},{"fixed":"bdf678a273cadbccc347f331ae2e93ff4d14834c"},{"fixed":"0e47fc1c9181ae029e0e35a865cbf2adcbae626c"},{"fixed":"a04c207f0801abdd23a169b5f902a9845059a65a"},{"fixed":"2bccfb8476ca5f3548afbd623dc7a6980d4e77de"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64118.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"5.10.259"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.142"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.92"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.34"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64118.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}