{"id":"CVE-2026-53177","summary":"bnxt_en: Fix NULL pointer dereference","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Fix NULL pointer dereference\n\nPCIe errors detected by a Root Port or Downstream Port cause error\nrecovery services to run on all subordinate devices regardless of\nadministrative state.\n\nThe .error_detected() callback, bnxt_io_error_detected(), disables\nand synchronizes IRQs via bnxt_disable_int_sync(), which calls\nbnxt_cp_num_to_irq_num() to map completion rings to IRQs using\nbp-\u003ebnapi.\n\nSince bp-\u003ebnapi is allocated on NIC open and freed on NIC close, PCIe\nerror recovery on a closed NIC can dereference a NULL pointer.\n\nCheck if bp-\u003ebnapi is NULL before disabling and synchronizing IRQs.","modified":"2026-07-17T21:08:20.357643381Z","published":"2026-06-25T08:38:53.347Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53177.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/08e57d014ea19f303d5d57a849beb846f37788b7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1449177b87f768353909e930a99b902675119b2b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1a418ad0e5e525d1d117dd1601681f75455af320"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3884976f87448e269908ae61bd5d62d54ce9c0c7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/580844a9683afe7974856dd5b7886447435b3474"},{"type":"WEB","url":"https://git.kernel.org/stable/c/59c5a3e69c7630a811565937e64be70b08436761"},{"type":"WEB","url":"https://git.kernel.org/stable/c/964b1c3eb71afe58bb61c8b984164447e000ae8a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d930276f2cddd0b7294cac7a8fe7b877f6d9e08d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53177.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53177"},{"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":"e5811b8c09df9bc80eabc95339fceded23f16289"},{"fixed":"1449177b87f768353909e930a99b902675119b2b"},{"fixed":"964b1c3eb71afe58bb61c8b984164447e000ae8a"},{"fixed":"59c5a3e69c7630a811565937e64be70b08436761"},{"fixed":"1a418ad0e5e525d1d117dd1601681f75455af320"},{"fixed":"08e57d014ea19f303d5d57a849beb846f37788b7"},{"fixed":"3884976f87448e269908ae61bd5d62d54ce9c0c7"},{"fixed":"580844a9683afe7974856dd5b7886447435b3474"},{"fixed":"d930276f2cddd0b7294cac7a8fe7b877f6d9e08d"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53177.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.17.0"},{"fixed":"5.10.260"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.176"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.94"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.36"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.13"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53177.json"}}],"schema_version":"1.7.5"}