{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49519","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-02-26T02:08:31.588Z","datePublished":"2025-02-26T02:13:45.857Z","dateUpdated":"2026-08-15T12:22:47.970Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-15T12:22:47.970Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nath10k: skip ath10k_halt during suspend for driver state RESTARTING\n\nDouble free crash is observed when FW recovery(caused by wmi\ntimeout/crash) is followed by immediate suspend event. The FW recovery\nis triggered by ath10k_core_restart() which calls driver clean up via\nath10k_halt(). When the suspend event occurs between the FW recovery,\nthe restart worker thread is put into frozen state until suspend completes.\nThe suspend event triggers ath10k_stop() which again triggers ath10k_halt()\nThe double invocation of ath10k_halt() causes ath10k_htt_rx_free() to be\ncalled twice(Note: ath10k_htt_rx_alloc was not called by restart worker\nthread because of its frozen state), causing the crash.\n\nTo fix this, during the suspend flow, skip call to ath10k_halt() in\nath10k_stop() when the current driver state is ATH10K_STATE_RESTARTING.\nAlso, for driver state ATH10K_STATE_RESTARTING, call\nath10k_wait_for_suspend() in ath10k_stop(). This is because call to\nath10k_wait_for_suspend() is skipped later in\n[ath10k_halt() > ath10k_core_stop()] for the driver state\nATH10K_STATE_RESTARTING.\n\nThe frozen restart worker thread will be cancelled during resume when the\ndevice comes out of suspend.\n\nBelow is the crash stack for reference:\n\n[  428.469167] ------------[ cut here ]------------\n[  428.469180] kernel BUG at mm/slub.c:4150!\n[  428.469193] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n[  428.469219] Workqueue: events_unbound async_run_entry_fn\n[  428.469230] RIP: 0010:kfree+0x319/0x31b\n[  428.469241] RSP: 0018:ffffa1fac015fc30 EFLAGS: 00010246\n[  428.469247] RAX: ffffedb10419d108 RBX: ffff8c05262b0000\n[  428.469252] RDX: ffff8c04a8c07000 RSI: 0000000000000000\n[  428.469256] RBP: ffffa1fac015fc78 R08: 0000000000000000\n[  428.469276] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  428.469285] Call Trace:\n[  428.469295]  ? dma_free_attrs+0x5f/0x7d\n[  428.469320]  ath10k_core_stop+0x5b/0x6f\n[  428.469336]  ath10k_halt+0x126/0x177\n[  428.469352]  ath10k_stop+0x41/0x7e\n[  428.469387]  drv_stop+0x88/0x10e\n[  428.469410]  __ieee80211_suspend+0x297/0x411\n[  428.469441]  rdev_suspend+0x6e/0xd0\n[  428.469462]  wiphy_suspend+0xb1/0x105\n[  428.469483]  ? name_show+0x2d/0x2d\n[  428.469490]  dpm_run_callback+0x8c/0x126\n[  428.469511]  ? name_show+0x2d/0x2d\n[  428.469517]  __device_suspend+0x2e7/0x41b\n[  428.469523]  async_suspend+0x1f/0x93\n[  428.469529]  async_run_entry_fn+0x3d/0xd1\n[  428.469535]  process_one_work+0x1b1/0x329\n[  428.469541]  worker_thread+0x213/0x372\n[  428.469547]  kthread+0x150/0x15f\n[  428.469552]  ? pr_cont_work+0x58/0x58\n[  428.469558]  ? kthread_blkcg+0x31/0x31\n\nTested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00288-QCARMSWPZ-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 - The double-free is in the ath10k WiFi driver and is reached when firmware recovery (WMI timeout/FW crash) is interrupted by suspend; an attacker in 802.11 radio range can drive that recovery by injecting frames that fault QCA6174 firmware, matching Adjacent WiFi reachability rather than routable Network.\nAC:L - An in-range attacker can repeatedly induce firmware faults to enter ATH10K_STATE_RESTARTING after ath10k_halt() has already freed HTT RX resources, and on Chromebook/Android/laptop targets autosuspend routinely lands in that multi-second recovery window, so exploitation does not depend on a one-shot condition beyond attacker influence.\nPR:N - Malformed or stress 802.11 frames that crash/wedge firmware require no association, credentials, or local account on the victim; recovery and the subsequent suspend stop path run entirely in driver/PM context with no capability gate for the attacker.\nUI:N - Once the ath10k interface is operating, the attacker unilaterally triggers firmware recovery, and the suspend that hits ath10k_stop() is routine automatic behavior (idle suspend, Android autosleep, Chromebook sleep) rather than an attacker-solicited victim action.\nS:U - The double-free corrupts host-kernel slab/DMA allocations inside the same OS security authority and does not cross a VM, IOMMU, or other distinct trust boundary.\nC:H - This is a heap double-free of HTT RX ring state (dma_free_coherent/kfree via ath10k_htt_rx_free from a second ath10k_halt), which per kernel UAF/double-free guidance enables reclaim of the freed object and arbitrary kernel memory disclosure.\nI:H - The same double-free corrupts the allocator freelist and is exploitable heap corruption that enables heap spray, arbitrary write, and control-flow hijack primitives beyond a pure crash.\nA:H - The bug demonstrably triggers kernel BUG at mm/slub.c (double-free in kfree during suspend), which is a full kernel oops/panic availability impact."}]}],"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/ath10k/mac.c"],"versions":[{"version":"c2cac2f74ab4bcf0db0dcf3a612f1e5b52d145c8","lessThan":"8aa3750986ffcf73e0692db3b40dd3a8e8c0c575","status":"affected","versionType":"git"},{"version":"c2cac2f74ab4bcf0db0dcf3a612f1e5b52d145c8","lessThan":"c2272428090d0d215a3f017cbbbad731c07eee53","status":"affected","versionType":"git"},{"version":"c2cac2f74ab4bcf0db0dcf3a612f1e5b52d145c8","lessThan":"7eb14cb604f49e58b7cf6faa87961a865a3c8649","status":"affected","versionType":"git"},{"version":"c2cac2f74ab4bcf0db0dcf3a612f1e5b52d145c8","lessThan":"5321e5211b5dc873e2e3d0deb749e69ecf4dbfe5","status":"affected","versionType":"git"},{"version":"c2cac2f74ab4bcf0db0dcf3a612f1e5b52d145c8","lessThan":"b72a4aff947ba807177bdabb43debaf2c66bee05","status":"affected","versionType":"git"},{"version":"ea23fca0c60045afbbeceef1926893d905eb1b36","status":"affected","versionType":"git"},{"version":"4.9.2","lessThan":"4.10","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/ath/ath10k/mac.c"],"versions":[{"version":"4.10","status":"affected"},{"version":"0","lessThan":"4.10","status":"unaffected","versionType":"semver"},{"version":"5.10.121","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.46","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.17.14","lessThanOrEqual":"5.17.*","status":"unaffected","versionType":"semver"},{"version":"5.18.3","lessThanOrEqual":"5.18.*","status":"unaffected","versionType":"semver"},{"version":"5.19","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":"4.10","versionEndExcluding":"5.10.121"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.15.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.17.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8aa3750986ffcf73e0692db3b40dd3a8e8c0c575"},{"url":"https://git.kernel.org/stable/c/c2272428090d0d215a3f017cbbbad731c07eee53"},{"url":"https://git.kernel.org/stable/c/7eb14cb604f49e58b7cf6faa87961a865a3c8649"},{"url":"https://git.kernel.org/stable/c/5321e5211b5dc873e2e3d0deb749e69ecf4dbfe5"},{"url":"https://git.kernel.org/stable/c/b72a4aff947ba807177bdabb43debaf2c66bee05"}],"title":"ath10k: skip ath10k_halt during suspend for driver state RESTARTING","x_generator":{"engine":"bippy-1.2.0"}}}}