{"api_version":"1","generated_at":"2026-09-12T11:23:58+00:00","cve":"CVE-2026-80944","urls":{"html":"https://cve.report/CVE-2026-80944","api":"https://cve.report/api/cve/CVE-2026-80944.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80944","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80944"},"summary":{"title":"wifi: mwifiex: Detach sync cmd buffer on interrupted wait","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Detach sync cmd buffer on interrupted wait\n\nmwifiex synchronous commands keep the caller-provided data buffer in\ncmd_node->data_buf. Several callers pass stack-allocated objects there.\n\nIf wait_event_interruptible_timeout() is interrupted, the caller can\nreturn and release that stack object while the firmware command is still\nthe current command. A late firmware response then reaches the normal\nresponse handler, which can copy data through cmd_node->data_buf into the\nstale stack address.\n\nThis fixes a stack corruption observed during repeated association and\ndisassociation cycles. The panic trace showed the command wait being\ninterrupted immediately before a bad pointer dereference:\n\n  cmd_wait_q terminated: -512\n  Unable to handle kernel paging request at virtual address 002c583837384662\n  Kernel panic - not syncing: stack-protector: Kernel stack is corrupted\n  ...\n  Tainted: [M]=MACHINE_CHECK\n\nThe fault address decodes as little-endian ASCII:\n\n  0x002c583837384662 -> \"bF878X,\\0\"\n\nwhich is a fragment of the VERSION_EXT firmware string exposed as\ndebugfs \"verext\":\n\n  w8997o-V4, RF878X, FP92, 16.92.21.p153.7\n\nThe same runs also showed corrupted control data containing:\n\n  0x2400372e333531 -> \"153.7\\0$\"\n\nwhich is the tail of the same VERSION_EXT string. This points at a late\nVERSION_EXT response writing through a stale stack-backed data_buf after\nthe interrupted wait returned.\n\nAfter cancelling pending commands on an interrupted or timed-out wait,\ndetach the caller-owned data buffer from the still-current command. This\npreserves the existing command cancellation behaviour while preventing a\nlate response from writing through a pointer whose lifetime ended with the\nwaiting caller.\n\nTested on an i.MX8MP board using an 88W8997.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:18:59","updated_at":"2026-09-11 20:18:59"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/20ee9c03f261bf6ac59331e2ca7b46b23646412a","name":"https://git.kernel.org/stable/c/20ee9c03f261bf6ac59331e2ca7b46b23646412a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d29a165588b6a0cf7a38db5cbd602aef7ef8c658","name":"https://git.kernel.org/stable/c/d29a165588b6a0cf7a38db5cbd602aef7ef8c658","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ef06882c7d8a7400b67d0d003b1008093dd589ed","name":"https://git.kernel.org/stable/c/ef06882c7d8a7400b67d0d003b1008093dd589ed","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b1bbeb8970eeb6c6bf3cd5314138103f7b69446d","name":"https://git.kernel.org/stable/c/b1bbeb8970eeb6c6bf3cd5314138103f7b69446d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80944","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80944","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3d026d09b28dda24777129a931634949c75a9181 20ee9c03f261bf6ac59331e2ca7b46b23646412a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3d026d09b28dda24777129a931634949c75a9181 b1bbeb8970eeb6c6bf3cd5314138103f7b69446d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3d026d09b28dda24777129a931634949c75a9181 d29a165588b6a0cf7a38db5cbd602aef7ef8c658 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3d026d09b28dda24777129a931634949c75a9181 ef06882c7d8a7400b67d0d003b1008093dd589ed git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/marvell/mwifiex/sta_ioctl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"20ee9c03f261bf6ac59331e2ca7b46b23646412a","status":"affected","version":"3d026d09b28dda24777129a931634949c75a9181","versionType":"git"},{"lessThan":"b1bbeb8970eeb6c6bf3cd5314138103f7b69446d","status":"affected","version":"3d026d09b28dda24777129a931634949c75a9181","versionType":"git"},{"lessThan":"d29a165588b6a0cf7a38db5cbd602aef7ef8c658","status":"affected","version":"3d026d09b28dda24777129a931634949c75a9181","versionType":"git"},{"lessThan":"ef06882c7d8a7400b67d0d003b1008093dd589ed","status":"affected","version":"3d026d09b28dda24777129a931634949c75a9181","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/marvell/mwifiex/sta_ioctl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.15"},{"lessThan":"3.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"3.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"3.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Detach sync cmd buffer on interrupted wait\n\nmwifiex synchronous commands keep the caller-provided data buffer in\ncmd_node->data_buf. Several callers pass stack-allocated objects there.\n\nIf wait_event_interruptible_timeout() is interrupted, the caller can\nreturn and release that stack object while the firmware command is still\nthe current command. A late firmware response then reaches the normal\nresponse handler, which can copy data through cmd_node->data_buf into the\nstale stack address.\n\nThis fixes a stack corruption observed during repeated association and\ndisassociation cycles. The panic trace showed the command wait being\ninterrupted immediately before a bad pointer dereference:\n\n  cmd_wait_q terminated: -512\n  Unable to handle kernel paging request at virtual address 002c583837384662\n  Kernel panic - not syncing: stack-protector: Kernel stack is corrupted\n  ...\n  Tainted: [M]=MACHINE_CHECK\n\nThe fault address decodes as little-endian ASCII:\n\n  0x002c583837384662 -> \"bF878X,\\0\"\n\nwhich is a fragment of the VERSION_EXT firmware string exposed as\ndebugfs \"verext\":\n\n  w8997o-V4, RF878X, FP92, 16.92.21.p153.7\n\nThe same runs also showed corrupted control data containing:\n\n  0x2400372e333531 -> \"153.7\\0$\"\n\nwhich is the tail of the same VERSION_EXT string. This points at a late\nVERSION_EXT response writing through a stale stack-backed data_buf after\nthe interrupted wait returned.\n\nAfter cancelling pending commands on an interrupted or timed-out wait,\ndetach the caller-owned data buffer from the still-current command. This\npreserves the existing command cancellation behaviour while preventing a\nlate response from writing through a pointer whose lifetime ended with the\nwaiting caller.\n\nTested on an i.MX8MP board using an 88W8997."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:42:16.076Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/20ee9c03f261bf6ac59331e2ca7b46b23646412a"},{"url":"https://git.kernel.org/stable/c/b1bbeb8970eeb6c6bf3cd5314138103f7b69446d"},{"url":"https://git.kernel.org/stable/c/d29a165588b6a0cf7a38db5cbd602aef7ef8c658"},{"url":"https://git.kernel.org/stable/c/ef06882c7d8a7400b67d0d003b1008093dd589ed"}],"title":"wifi: mwifiex: Detach sync cmd buffer on interrupted wait","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80944","datePublished":"2026-09-11T19:42:16.076Z","dateReserved":"2026-08-26T14:34:25.803Z","dateUpdated":"2026-09-11T19:42:16.076Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:18:59","lastModifiedDate":"2026-09-11 20:18:59","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80944","Ordinal":"1","Title":"wifi: mwifiex: Detach sync cmd buffer on interrupted wait","CVE":"CVE-2026-80944","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80944","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Detach sync cmd buffer on interrupted wait\n\nmwifiex synchronous commands keep the caller-provided data buffer in\ncmd_node->data_buf. Several callers pass stack-allocated objects there.\n\nIf wait_event_interruptible_timeout() is interrupted, the caller can\nreturn and release that stack object while the firmware command is still\nthe current command. A late firmware response then reaches the normal\nresponse handler, which can copy data through cmd_node->data_buf into the\nstale stack address.\n\nThis fixes a stack corruption observed during repeated association and\ndisassociation cycles. The panic trace showed the command wait being\ninterrupted immediately before a bad pointer dereference:\n\n  cmd_wait_q terminated: -512\n  Unable to handle kernel paging request at virtual address 002c583837384662\n  Kernel panic - not syncing: stack-protector: Kernel stack is corrupted\n  ...\n  Tainted: [M]=MACHINE_CHECK\n\nThe fault address decodes as little-endian ASCII:\n\n  0x002c583837384662 -> \"bF878X,\\0\"\n\nwhich is a fragment of the VERSION_EXT firmware string exposed as\ndebugfs \"verext\":\n\n  w8997o-V4, RF878X, FP92, 16.92.21.p153.7\n\nThe same runs also showed corrupted control data containing:\n\n  0x2400372e333531 -> \"153.7\\0$\"\n\nwhich is the tail of the same VERSION_EXT string. This points at a late\nVERSION_EXT response writing through a stale stack-backed data_buf after\nthe interrupted wait returned.\n\nAfter cancelling pending commands on an interrupted or timed-out wait,\ndetach the caller-owned data buffer from the still-current command. This\npreserves the existing command cancellation behaviour while preventing a\nlate response from writing through a pointer whose lifetime ended with the\nwaiting caller.\n\nTested on an i.MX8MP board using an 88W8997.","Type":"Description","Title":"wifi: mwifiex: Detach sync cmd buffer on interrupted wait"}]}}}