CVE-2026-74407

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74407", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.892Z", "datePublished": "2026-08-15T05:59:16.044Z", "dateUpdated": "2026-10-30T12:30:00.729Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:30:00.729Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: cancel SSR work items during PCI shutdown\n\nA reboot can crash the kernel if it overlaps with WLAN firmware crash\nrecovery (SSR). The crash is a NULL pointer dereference in the MHI teardown\npath while freeing DMA-backed MHI contexts.\n\nSimplified trace:\n dma_free_attrs\n mhi_deinit_dev_ctxt [mhi]\n ath11k_pci_power_down [ath11k_pci]\n ath11k_pci_shutdown [ath11k_pci]\n device_shutdown\n kernel_restart\n\nOn the host side, SSR is driven by the MHI RDDM callback, which queues\nreset_work to perform device recovery. reset_work power-cycles the device\nby calling ath11k_hif_power_down() followed by ath11k_hif_power_up(). The\npower-down phase deinitializes MHI and frees DMA resources.\n\nShutdown/reboot runs fully asynchronously with this RDDM-driven SSR\nrecovery flow. As a result, the shutdown path\n(ath11k_pci_shutdown() -> ath11k_pci_power_down()) can race with the SSR\nrecovery sequence.\n\nFix this by canceling SSR-related work items during PCI shutdown, marking\nthe device as unregistering, and serializing the RDDM callback path that\nchecks and queues reset_work. This ensures that no new SSR recovery work\ncan be queued once teardown has started, and that any in-flight recovery\nwork is fully synchronized before device power-down, preventing MHI\nteardown and DMA resource freeing from running more than once.\n\nNote: This issue only affects PCI/MHI-based devices. AHB-based ath11k\ndevices do not queue reset_work in normal SSR flows.\n\nTested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04866.5-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - WiFi ath11k PCI/MHI devices (QCA6390/WCN6855 laptops, workstations, gateways) enter SSR when WLAN firmware faults; MHI RDDM interrupts queue reset_work recovery that races kernel_restart PCI shutdown (ath11k_pci_shutdown) on the same driver.\nAC:L - An adjacent attacker controls SSR timing by repeatedly inducing firmware crashes via crafted/malicious 802.11 traffic, keeping reset_work active until shutdown overlaps; this is an attacker-driven race, not luck-dependent memory layout or rare kernel config.\nPR:N - No Linux account or kernel capability is needed to trigger the SSR leg\u2014firmware crash/RDDM recovery is driven by over-the-air WLAN events; concurrent device_shutdown during automated maintenance or fleet reboots can overlap without attacker CAP_SYS_BOOT.\nUI:N - Only an active ath11k WLAN interface is required (default on WiFi-equipped systems); no victim clicks, network joins, or manual reboot actions are needed because unattended updates and scheduled maintenance reboots can overlap SSR automatically.\nS:U - Impact is kernel panic/oops from unsynchronized MHI DMA teardown within the host kernel security boundary; this does not cross VM, container, or IOMMU trust domains.\nC:H - Concurrent mhi_unprepare_after_power_down/mhi_deinit_dev_ctxt from reset_work and ath11k_pci_shutdown can double-free coherent DMA rings/contexts or dereference freed MHI state, enabling arbitrary kernel memory reads and information disclosure.\nI:H - Racing power-down paths free the same MHI DMA-backed ring/context memory twice, corrupting kernel DMA allocator metadata and enabling controlled reallocation for arbitrary kernel writes, control-flow hijack, and privilege escalation.\nA:H - NULL pointer dereference and/or double dma_free in mhi_deinit_dev_ctxt during PCI shutdown overlapping SSR reliably causes kernel oops/panic, denying availability and potentially aborting reboot on affected Qualcomm ath11k PCI systems."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/ath/ath11k/mhi.c", "drivers/net/wireless/ath/ath11k/pci.c"], "versions": [{"version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "7630eb217166435e8a6dd501fa4ad304e2264407", "status": "affected", "versionType": "git"}, {"version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "f82d42577ee4a191b0ad0f0a3b49fc1935dff845", "status": "affected", "versionType": "git"}, {"version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "daeb44fb8d700654f37f54d1ee36cd67645d0d34", "status": "affected", "versionType": "git"}, {"version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "6dd3701facc0cee62d6682e49eed64499f9d0e43", "status": "affected", "versionType": "git"}, {"version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "53dd29e8aeb2a1b5f079178551836b85fc6b53df", "status": "affected", "versionType": "git"}, {"version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "8c79aac429b583301f387374ff37c59be671df87", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/ath/ath11k/mhi.c", "drivers/net/wireless/ath/ath11k/pci.c"], "versions": [{"version": "5.19", "status": "affected"}, {"version": "0", "lessThan": "5.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7630eb217166435e8a6dd501fa4ad304e2264407"}, {"url": "https://git.kernel.org/stable/c/f82d42577ee4a191b0ad0f0a3b49fc1935dff845"}, {"url": "https://git.kernel.org/stable/c/daeb44fb8d700654f37f54d1ee36cd67645d0d34"}, {"url": "https://git.kernel.org/stable/c/6dd3701facc0cee62d6682e49eed64499f9d0e43"}, {"url": "https://git.kernel.org/stable/c/53dd29e8aeb2a1b5f079178551836b85fc6b53df"}, {"url": "https://git.kernel.org/stable/c/8c79aac429b583301f387374ff37c59be671df87"}], "title": "wifi: ath11k: cancel SSR work items during PCI shutdown", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74407", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T18:55:54.888138Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:05:43.486Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74407", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T18:55:54.888138Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:55:55.497Z"}}], "cna": {"title": "wifi: ath11k: cancel SSR work items during PCI shutdown", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:A - WiFi ath11k PCI/MHI devices (QCA6390/WCN6855 laptops, workstations, gateways) enter SSR when WLAN firmware faults; MHI RDDM interrupts queue reset_work recovery that races kernel_restart PCI shutdown (ath11k_pci_shutdown) on the same driver.\nAC:L - An adjacent attacker controls SSR timing by repeatedly inducing firmware crashes via crafted/malicious 802.11 traffic, keeping reset_work active until shutdown overlaps; this is an attacker-driven race, not luck-dependent memory layout or rare kernel config.\nPR:N - No Linux account or kernel capability is needed to trigger the SSR leg\u2014firmware crash/RDDM recovery is driven by over-the-air WLAN events; concurrent device_shutdown during automated maintenance or fleet reboots can overlap without attacker CAP_SYS_BOOT.\nUI:N - Only an active ath11k WLAN interface is required (default on WiFi-equipped systems); no victim clicks, network joins, or manual reboot actions are needed because unattended updates and scheduled maintenance reboots can overlap SSR automatically.\nS:U - Impact is kernel panic/oops from unsynchronized MHI DMA teardown within the host kernel security boundary; this does not cross VM, container, or IOMMU trust domains.\nC:H - Concurrent mhi_unprepare_after_power_down/mhi_deinit_dev_ctxt from reset_work and ath11k_pci_shutdown can double-free coherent DMA rings/contexts or dereference freed MHI state, enabling arbitrary kernel memory reads and information disclosure.\nI:H - Racing power-down paths free the same MHI DMA-backed ring/context memory twice, corrupting kernel DMA allocator metadata and enabling controlled reallocation for arbitrary kernel writes, control-flow hijack, and privilege escalation.\nA:H - NULL pointer dereference and/or double dma_free in mhi_deinit_dev_ctxt during PCI shutdown overlapping SSR reliably causes kernel oops/panic, denying availability and potentially aborting reboot on affected Qualcomm ath11k PCI systems."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "f82d42577ee4a191b0ad0f0a3b49fc1935dff845", "versionType": "git"}, {"status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "daeb44fb8d700654f37f54d1ee36cd67645d0d34", "versionType": "git"}, {"status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "6dd3701facc0cee62d6682e49eed64499f9d0e43", "versionType": "git"}, {"status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "53dd29e8aeb2a1b5f079178551836b85fc6b53df", "versionType": "git"}, {"status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "lessThan": "8c79aac429b583301f387374ff37c59be671df87", "versionType": "git"}], "programFiles": ["drivers/net/wireless/ath/ath11k/mhi.c", "drivers/net/wireless/ath/ath11k/pci.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.19"}, {"status": "unaffected", "version": "0", "lessThan": "5.19", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.53", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/wireless/ath/ath11k/mhi.c", "drivers/net/wireless/ath/ath11k/pci.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/f82d42577ee4a191b0ad0f0a3b49fc1935dff845"}, {"url": "https://git.kernel.org/stable/c/daeb44fb8d700654f37f54d1ee36cd67645d0d34"}, {"url": "https://git.kernel.org/stable/c/6dd3701facc0cee62d6682e49eed64499f9d0e43"}, {"url": "https://git.kernel.org/stable/c/53dd29e8aeb2a1b5f079178551836b85fc6b53df"}, {"url": "https://git.kernel.org/stable/c/8c79aac429b583301f387374ff37c59be671df87"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: cancel SSR work items during PCI shutdown\n\nA reboot can crash the kernel if it overlaps with WLAN firmware crash\nrecovery (SSR). The crash is a NULL pointer dereference in the MHI teardown\npath while freeing DMA-backed MHI contexts.\n\nSimplified trace:\n dma_free_attrs\n mhi_deinit_dev_ctxt [mhi]\n ath11k_pci_power_down [ath11k_pci]\n ath11k_pci_shutdown [ath11k_pci]\n device_shutdown\n kernel_restart\n\nOn the host side, SSR is driven by the MHI RDDM callback, which queues\nreset_work to perform device recovery. reset_work power-cycles the device\nby calling ath11k_hif_power_down() followed by ath11k_hif_power_up(). The\npower-down phase deinitializes MHI and frees DMA resources.\n\nShutdown/reboot runs fully asynchronously with this RDDM-driven SSR\nrecovery flow. As a result, the shutdown path\n(ath11k_pci_shutdown() -> ath11k_pci_power_down()) can race with the SSR\nrecovery sequence.\n\nFix this by canceling SSR-related work items during PCI shutdown, marking\nthe device as unregistering, and serializing the RDDM callback path that\nchecks and queues reset_work. This ensures that no new SSR recovery work\ncan be queued once teardown has started, and that any in-flight recovery\nwork is fully synchronized before device power-down, preventing MHI\nteardown and DMA resource freeing from running more than once.\n\nNote: This issue only affects PCI/MHI-based devices. AHB-based ath11k\ndevices do not queue reset_work in normal SSR flows.\n\nTested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04866.5-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.160", "versionStartIncluding": "5.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.114", "versionStartIncluding": "5.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.53", "versionStartIncluding": "5.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "5.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "5.19"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:45:39.446Z"}}}, "cveMetadata": {"cveId": "CVE-2026-74407", "state": "PUBLISHED", "dateUpdated": "2026-10-21T12:45:39.446Z", "dateReserved": "2026-08-15T05:44:03.892Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T05:59:16.044Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/ath/ath11k/mhi.c", "drivers/net/wireless/ath/ath11k/pci.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7630eb217166435e8a6dd501fa4ad304e2264407", "status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "versionType": "git"}, {"lessThan": "f82d42577ee4a191b0ad0f0a3b49fc1935dff845", "status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "versionType": "git"}, {"lessThan": "daeb44fb8d700654f37f54d1ee36cd67645d0d34", "status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "versionType": "git"}, {"lessThan": "6dd3701facc0cee62d6682e49eed64499f9d0e43", "status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "versionType": "git"}, {"lessThan": "53dd29e8aeb2a1b5f079178551836b85fc6b53df", "status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "versionType": "git"}, {"lessThan": "8c79aac429b583301f387374ff37c59be671df87", "status": "affected", "version": "13da397f884d9c9a3fb6616206eeb6c6ab097287", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/ath/ath11k/mhi.c", "drivers/net/wireless/ath/ath11k/pci.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.19"}, {"lessThan": "5.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: cancel SSR work items during PCI shutdown\n\nA reboot can crash the kernel if it overlaps with WLAN firmware crash\nrecovery (SSR). The crash is a NULL pointer dereference in the MHI teardown\npath while freeing DMA-backed MHI contexts.\n\nSimplified trace:\n dma_free_attrs\n mhi_deinit_dev_ctxt [mhi]\n ath11k_pci_power_down [ath11k_pci]\n ath11k_pci_shutdown [ath11k_pci]\n device_shutdown\n kernel_restart\n\nOn the host side, SSR is driven by the MHI RDDM callback, which queues\nreset_work to perform device recovery. reset_work power-cycles the device\nby calling ath11k_hif_power_down() followed by ath11k_hif_power_up(). The\npower-down phase deinitializes MHI and frees DMA resources.\n\nShutdown/reboot runs fully asynchronously with this RDDM-driven SSR\nrecovery flow. As a result, the shutdown path\n(ath11k_pci_shutdown() -> ath11k_pci_power_down()) can race with the SSR\nrecovery sequence.\n\nFix this by canceling SSR-related work items during PCI shutdown, marking\nthe device as unregistering, and serializing the RDDM callback path that\nchecks and queues reset_work. This ensures that no new SSR recovery work\ncan be queued once teardown has started, and that any in-flight recovery\nwork is fully synchronized before device power-down, preventing MHI\nteardown and DMA resource freeing from running more than once.\n\nNote: This issue only affects PCI/MHI-based devices. AHB-based ath11k\ndevices do not queue reset_work in normal SSR flows.\n\nTested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04866.5-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1"}], "id": "CVE-2026-74407", "lastModified": "2026-10-30T13:19:57.350", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-74407", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T18:55:54.888138Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:22:42.737", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/53dd29e8aeb2a1b5f079178551836b85fc6b53df"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6dd3701facc0cee62d6682e49eed64499f9d0e43"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7630eb217166435e8a6dd501fa4ad304e2264407"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c79aac429b583301f387374ff37c59be671df87"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/daeb44fb8d700654f37f54d1ee36cd67645d0d34"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f82d42577ee4a191b0ad0f0a3b49fc1935dff845"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: ath11k: cancel SSR work items during PCI shutdown", "id": "2516906", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516906"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: ath11k: cancel SSR work items during PCI shutdown\nA reboot can crash the kernel if it overlaps with WLAN firmware crash\nrecovery (SSR). The crash is a NULL pointer dereference in the MHI teardown\npath while freeing DMA-backed MHI contexts.\nSimplified trace:\ndma_free_attrs\nmhi_deinit_dev_ctxt [mhi]\nath11k_pci_power_down [ath11k_pci]\nath11k_pci_shutdown [ath11k_pci]\ndevice_shutdown\nkernel_restart\nOn the host side, SSR is driven by the MHI RDDM callback, which queues\nreset_work to perform device recovery. reset_work power-cycles the device\nby calling ath11k_hif_power_down() followed by ath11k_hif_power_up(). The\npower-down phase deinitializes MHI and frees DMA resources.\nShutdown/reboot runs fully asynchronously with this RDDM-driven SSR\nrecovery flow. As a result, the shutdown path\n(ath11k_pci_shutdown() -> ath11k_pci_power_down()) can race with the SSR\nrecovery sequence.\nFix this by canceling SSR-related work items during PCI shutdown, marking\nthe device as unregistering, and serializing the RDDM callback path that\nchecks and queues reset_work. This ensures that no new SSR recovery work\ncan be queued once teardown has started, and that any in-flight recovery\nwork is fully synchronized before device power-down, preventing MHI\nteardown and DMA resource freeing from running more than once.\nNote: This issue only affects PCI/MHI-based devices. AHB-based ath11k\ndevices do not queue reset_work in normal SSR flows.\nTested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04866.5-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1", "A flaw was found in the Linux kernel's ath11k Wi-Fi driver. A race condition exists between the system's reboot or shutdown process and the WLAN firmware crash recovery (SSR) mechanism. This race condition can lead to a NULL pointer dereference, causing the kernel to crash and resulting in a Denial of Service (DoS). This issue specifically affects PCI/MHI-based devices."], "name": "CVE-2026-74407", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74407\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74407\nhttps://lore.kernel.org/linux-cve-announce/2026081510-CVE-2026-74407-57b4@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13da397f884d9c9a3fb6616206eeb6c6ab097287,53dd29e8aeb2a1b5f079178551836b85fc6b53df)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[13da397f884d9c9a3fb6616206eeb6c6ab097287,8c79aac429b583301f387374ff37c59be671df87)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T13:15:03.217013+00:00", "updated": "2026-08-17T14:15:04.391051+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476", "CWE-362"]}