{"id":"CVE-2026-53177","title":"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…","summary":"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…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.17, < 5.15.210","linux_kernel >= 5.16, < 6.1.176","linux_kernel >= 6.2, < 6.6.143","linux_kernel >= 6.7, < 6.12.94","linux_kernel >= 6.13, < 6.18.36","linux_kernel >= 6.19, < 7.0.13","linux_kernel = 7.1"],"patched":["linux_kernel 7.0.13"],"published":"2026-06-25","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:20:03.180","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53177","references":[{"url":"https://git.kernel.org/stable/c/08e57d014ea19f303d5d57a849beb846f37788b7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1449177b87f768353909e930a99b902675119b2b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1a418ad0e5e525d1d117dd1601681f75455af320","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3884976f87448e269908ae61bd5d62d54ce9c0c7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/580844a9683afe7974856dd5b7886447435b3474","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/59c5a3e69c7630a811565937e64be70b08436761","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/964b1c3eb71afe58bb61c8b984164447e000ae8a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d930276f2cddd0b7294cac7a8fe7b877f6d9e08d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00125,"epssPercentile":0.02207,"ingestedAt":"2026-07-04T12:56:09.641Z","slug":"CVE-2026-53177","body":"## Overview\n\nIn 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->bnapi.\n\nSince bp->bnapi 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->bnapi is NULL before disabling and synchronizing IRQs.\n\n## Affected\n\n- `linux_kernel >= 4.17, < 5.15.210`\n- `linux_kernel >= 5.16, < 6.1.176`\n- `linux_kernel >= 6.2, < 6.6.143`\n- `linux_kernel >= 6.7, < 6.12.94`\n- `linux_kernel >= 6.13, < 6.18.36`\n- `linux_kernel >= 6.19, < 7.0.13`\n- `linux_kernel = 7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.13`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":221769,"id":"CVE-2026-53177","ts":1792035412111,"field":"cvss","old":null,"new":"5.5"},{"seq":221768,"id":"CVE-2026-53177","ts":1792035412111,"field":"severity","old":"none","new":"medium"}]}