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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c",
            "drivers/net/wireless/intel/iwlwifi/mvm/utils.c"
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          "versions": [
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              "status": "affected",
              "version": "6.18"
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              "status": "unaffected",
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              "version": "6.18.34",
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            },
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              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: fix driver-set TX rates on old devices\n\nOn old devices such as 7265D, rates are still encoded in version 1\nformat, which doesn\u0027t use the CCK/OFDM rate index (0-3/0-7) but\nrather their PLCP value (e.g. 10 for 1 Mbps CCK rate.)\n\nWhile introducing v3 rates, I changed the driver from internally\nhandling v1 rates and converting to v2, to internally handling v3\nand converting to v1 or v2 according to the firmware. I accordingly\nchanged the code in iwl_mvm_mac80211_idx_to_hwrate() to no longer\nhave different values for different APIs. This was correct.\n\nHowever, I later reverted this part of the change, because it was\nreported that I had broken beacon rates, causing a FW assert/crash.\nThis caused TX_CMD rates to be set incorrectly, potentially causing\na warning when reported back from the device as having been used.\n\nFix this (hopefully correctly now) by handling beacon rates in the\nTX_CMD that\u0027s embedded in the beacon template command separately.\nRestore iwl_mvm_mac80211_idx_to_hwrate() to return only the rate\nindex, not PLCP value, fixing the real TX_CMD."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The vulnerable TX rate path is reached when the iwlwifi driver transmits WiFi management frames (probe responses, auth/assoc) or beacon templates in response to over-the-air activity. A remote attacker on the same WiFi/BSS segment can trigger this by sending probe requests to a victim AP or operating a rogue AP that causes victim clients to exchange management frames.\nAC:L - Once the victim uses affected legacy Intel hardware (e.g. 7265D with v1 rate firmware), the attacker can reliably trigger the bug by sending standard 802.11 management frames; no special timing, memory layout, or race conditions beyond normal WiFi traffic are required.\nPR:N - An adjacent attacker needs no privileges on the victim system. Exploitation is triggered purely by WiFi frames received by the victim\u0027s wireless interface; no local account, CAP_NET_ADMIN, or ioctl/netlink access on the victim is required.\nUI:N - From the attacker\u0027s perspective, no action by the victim user is needed beyond the WiFi interface being active (e.g., an AP broadcasting beacons or a client performing normal association). Probe responses and association handshakes are sent automatically by the driver.\nS:U - The vulnerability is confined to the iwlwifi kernel driver and its firmware interaction on the victim host. Impact does not cross a security boundary such as VM escape, sandbox escape, or IOMMU bypass.\nC:H - The double PLCP conversion passes PLCP values (e.g. 55, 110 for CCK rates) as array indices to iwl_fw_rate_idx_to_plcp(), which performs an unchecked lookup into a ~17-element table, causing out-of-bounds kernel memory reads whose results are embedded into TX commands.\nI:N - The bug corrupts rate-encoding metadata sent to firmware but does not provide an arbitrary kernel write, use-after-free, or demonstrated control-flow hijack primitive. Impact is malformed TX parameters and firmware misbehavior, not integrity of arbitrary kernel or user data.\nA:H - The fix commit and prior bug report document firmware assert/crash from incorrect beacon/TX_CMD rates on old devices, and the RX path emits WARN_ON for invalid rate values reported back from firmware. This can disable WiFi connectivity and potentially cause repeated firmware restart loops."
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        }
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      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:39:54.477Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/6fe92651b44fd3cfc8dcfdaad0e82885c384dada"
        },
        {
          "url": "https://git.kernel.org/stable/c/6b58a79f2cd98156856eb49e8b55db5facdd7e6d"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb84b5cbcaab3ca0f4e961d92a40ed7f3aac483b"
        }
      ],
      "title": "wifi: iwlwifi: mvm: fix driver-set TX rates on old devices",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64176",
    "datePublished": "2026-07-19T15:41:00.830Z",
    "dateReserved": "2026-07-19T07:54:57.039Z",
    "dateUpdated": "2026-08-05T12:39:54.477Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
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          "versions": [
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              "status": "affected",
              "version": "4.8"
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              "version": "6.6.145",
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              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                {
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix a use-after-free problem in rxe_mmap\n\nrxe_mmap() removes a rxe_mmap_info struct from the pending_mmaps list\nand releases pending_lock while the struct\u0027s kref is still at 1:\n\n   list_del_init(\u0026ip-\u003epending_mmaps);\n   spin_unlock_bh(\u0026rxe-\u003epending_lock);   /* ref == 1, no lock held */\n   ret = remap_vmalloc_range(vma, ip-\u003eobj, 0);  /* walks PTEs */\n   [...]\n   rxe_vma_open(vma);                    /* kref_get, ref \u2192 2 */\n   remap_vmalloc_range_partial() walks PTEs without any lock.\n\nA concurrent DESTROY_CQ ioctl on another CPU calls:\n\n    kref_put(\u0026q-\u003eip-\u003eref, rxe_mmap_release)   /* ref 1\u21920 */\n    vfree(ip-\u003eobj)   /* clears vmalloc PTEs mid-walk */\n    kfree(ip)        /* frees rxe_mmap_info */\n\nThis yields:\n\n   1. Kernel crash, vmalloc_to_page() returns NULL when vfree wins the\n   per-PTE race -\u003e vm_insert_page(NULL) \u2192 GPF in validate_page_before_insert\n\n   2. Page UAF, vmalloc_to_page() reads a stale PTE before vfree clears\n   it. User VMA holds a PTE to a free\u0027d page which might eventually get\n   reallocated later by vmalloc which allows the attacker to get a clean\n   page-level UAF.\n\n   It is worth noting that even though a page-level UAF is possible given\n   the strong primitive, it is statistically very difficult to achieve\n   given the very short time window (after the last insert_page and before\n   the kref_get).\n\nThe call trace are as below:\n\n  Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI\n  KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\n  CPU: 0 UID: 1000 PID: 413 Comm: poc Not tainted 7.0.0-rc5-dirty #28 PREEMPT(lazy)\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n  RIP: 0010:validate_page_before_insert+0x32/0x300\n  Code: e5 41 57 41 56 49 89 fe 41 55 41 54 53 48 89 f3 e8 93 b5 a3 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c80\u003e 3c 02 00 0f 85 7b 02 00 00 4c 8b 63 08 31 ff 4d 89 e5 41 83 e5\n  RSP: 0018:ffff88811b15f2f0 EFLAGS: 00000202\n  RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000\n  RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000008\n  RBP: ffff88811b15f318 R08: 0000000000000000 R09: 0000000000000000\n  R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881181eee00\n  R13: 0000000000000000 R14: ffff8881181eee00 R15: ffff8881181eee20\n  FS:  00007b1e000f76c0(0000) GS:ffff8884268e0000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 00007b1e00a24ac0 CR3: 0000000116eb3000 CR4: 00000000000006f0\n  Call Trace:\n   \u003cTASK\u003e\n   insert_page+0x8f/0x190\n   ? __pfx_insert_page+0x10/0x10\n   ? kasan_save_alloc_info+0x38/0x60\n   vm_insert_page+0x2e7/0x400\n   remap_vmalloc_range_partial+0x212/0x3e0\n   remap_vmalloc_range+0x6e/0xb0\n   ? __kasan_check_write+0x14/0x30\n   rxe_mmap+0x2e9/0x5d0\n   ib_uverbs_mmap+0x1ad/0x2c0\n   __mmap_region+0x12c2/0x2ad0\n   ? __pfx___mmap_region+0x10/0x10\n   ? __sanitizer_cov_trace_switch+0x58/0xb0\n   ? mas_prev_slot+0x360/0x39c0\n   ? __sanitizer_cov_trace_switch+0x58/0xb0\n   ? mas_next_slot+0x1e5b/0x2f40\n   ? __sanitizer_cov_trace_cmp8+0x18/0x30\n   ? unmapped_area_topdown+0x4dd/0x610\n   ? kfree+0x1b1/0x440\n   ? free_cpumask_var+0x16/0x30\n   ? __kasan_slab_free+0x7d/0xa0\n   ? __sanitizer_cov_trace_cmp8+0x18/0x30\n   mmap_region+0x2e6/0x3c0\n   do_mmap+0xa3e/0x12a0\n   ? __pfx_do_mmap+0x10/0x10\n   ? __kasan_check_write+0x14/0x30\n   ? down_write_killable+0xba/0x160\n   ? __pfx_down_write_killable+0x10/0x10\n   ? __sanitizer_cov_trace_cmp4+0x16/0x30\n   vm_mmap_pgoff+0x2d4/0x4a0\n   ? __pfx_vm_mmap_pgoff+0x10/0x10\n   ? fget+0x1bf/0x270\n   ksys_mmap_pgoff+0x40c/0x690\n   ? __sanitizer_cov_trace_const_cmp4+0x16/0x30\n   ? __pfx_ksys_mmap_pgoff+0x10/0x10\n   ? __kasan_check_write+0x14/0x30\n   ? _raw_spin_trylock+0xbb/0x130\n   ? __pfx__raw_spin_trylock+0x10/0x10\n   __x64_sys_mmap+0x135/0x1e0\n   x64_sys_c\n---truncated---"
        }
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      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
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              "lang": "en",
              "value": "AV:L - Triggered via local mmap on /dev/infiniband/uverbsN (ib_uverbs_mmap\u2192rxe_mmap) racing DESTROY_CQ/QP/SRQ ioctls; not reachable from RoCE/UDP packet processing.\nAC:L - Attacker controls both sides\u2014mmap of the pending CQ/QP/SRQ queue buffer and concurrent destroy that kref_puts to rxe_mmap_release\u2014and can retry unboundedly; PoC shows reliable crash.\nPR:L - uverbs_devnode() publishes /dev/infiniband/uverbs* as 0666 with no capability checks on create/mmap/destroy; once Soft-RoCE exists (admin setup), any unprivileged user (PoC UID 1000) can exploit.\nUI:N - Attacker opens uverbs, creates a CQ/QP/SRQ, then races mmap with destroy from its own threads; no victim action required.\nS:U - UAF corrupts kernel heap/vmalloc within the host kernel authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Race frees rxe_mmap_info and vfree\u0027s the queue while remap_vmalloc_range still walks it; stale PTEs can leave a user VMA mapped to reallocated pages, enabling page-level UAF reads.\nI:H - Same page-level UAF / freed-object control yields write primitives via remapped freed pages and heap reuse, sufficient for control-flow hijacking per UAF guidance.\nA:H - Concurrent vfree during PTE walk returns NULL to vm_insert_page, causing the documented GPF/oops in validate_page_before_insert; crash is reliably repeatable."
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/b810352d0916796dabe633cdb9adee9863ab4911"
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          "url": "https://git.kernel.org/stable/c/aef5ea8578f97f2701039600846a8bcf5f21e863"
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          "url": "https://git.kernel.org/stable/c/3371f2036e0f970166bbb624e25bba46d32fa18e"
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          "url": "https://git.kernel.org/stable/c/665fb7d22a700c66a78db0cf88c6e6a649aba9d0"
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        },
        {
          "url": "https://git.kernel.org/stable/c/35744ab3d03c5fca8c1752f53fc8fc674e14c561"
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      ],
      "title": "RDMA/rxe: Fix a use-after-free problem in rxe_mmap",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: reject out-of-range ptype in ice_parser_profile_init\n\nset_bit(rslt-\u003eptype, prof-\u003eptypes) operates on a DECLARE_BITMAP of\nICE_FLOW_PTYPE_MAX (1024) bits. Nothing prevents a malicious VF from\nproviding ptype \u003e= 1024 through VIRTCHNL, resulting in a write past\nthe end of the bitmap and a kernel page fault.\n\nReproduced with a custom kernel module injecting a crafted\nVIRTCHNL_OP_ADD_RSS_CFG on E810-C QSFP (8086:1592),\nFW 4.91 0x800214af 1.3909.0, ICE COMMS DDP 1.3.53.0,\nkernel 7.1.0-rc1.\n\ncrash_parser: ice_parser_profile_init @ ffffffffc0d61b60\ncrash_parser: setting ptype=0xffff (max valid=1023)\ncrash_parser: calling ice_parser_profile_init -- expect OOB crash!\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nOops: Oops: 0002 [#1] SMP NOPTI\nCPU: 56 UID: 0 PID: 165011 Comm: insmod Kdump: loaded Tainted: G S U OE 7.1.0-rc1 #1\nHardware name: Intel Corporation S2600BPB/S2600BPB\nRIP: 0010:ice_parser_profile_init+0x2d/0x1d0 [ice]\nCall Trace:\n \u003cTASK\u003e\n ? __pfx_ice_parser_profile_init+0x10/0x10 [ice]\n crash_init+0x127/0xff0 [crash_parser]\n do_one_initcall+0x45/0x310\n do_init_module+0x64/0x270\n init_module_from_file+0xcc/0xf0\n idempotent_init_module+0x17b/0x280\n __x64_sys_finit_module+0x6e/0xe0\n\nBail out early with -EINVAL when ptype is out of range."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE\n\n__decode_pg_temp() decodes an user-controlled length but only rejects\nvalues large enough to overflow the allocation; it does not bound it to\nCEPH_PG_MAX_SIZE. The helper backs both pg_temp and pg_upmap decoding, and\napply_upmap()/get_temp_osds() later copy the decoded list into the fixed-size\non-stack array struct ceph_osds.osds[CEPH_PG_MAX_SIZE]. A monitor that sends\nan OSDMap with a pg_temp/pg_upmap entry longer than 32 thus causes a stack\nout-of-bounds write.\n\nAn OSD set for a single PG can never exceed CEPH_PG_MAX_SIZE, so reject longer\nentries at decode time. The bound is well below the old overflow threshold, so\nit also covers the allocation-size overflow the previous check guarded against.\n\n  BUG: KASAN: stack-out-of-bounds in ceph_pg_to_up_acting_osds\n  Write of size 4 ... by task exploit\n   kasan_report (mm/kasan/report.c:595)\n   ceph_pg_to_up_acting_osds (net/ceph/osdmap.c:2617 net/ceph/osdmap.c:2833)\n   calc_target (net/ceph/osd_client.c:1638)\n   __submit_request (net/ceph/osd_client.c:2394)\n   ceph_osdc_start_request (net/ceph/osd_client.c:2490)\n   ceph_osdc_call (net/ceph/osd_client.c:5164)\n   rbd_dev_image_probe (drivers/block/rbd.c:6899)\n   do_rbd_add (drivers/block/rbd.c:7138)\n   ...\n  kernel BUG at net/ceph/osdmap.c:2670!\n\n[ idryomov: do the same in __decode_pg_upmap_items() ]"
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              "value": "AV:N - Malicious pg_temp/pg_upmap data arrives in CEPH_MSG_OSD_MAP from a Ceph monitor or OSD over TCP, is decoded in libceph, and later triggers stack corruption in ceph_pg_to_up_acting_osds during RBD/CephFS/libceph client I/O.\nAC:L - A compromised or attacker-controlled monitor can publish osdmap entries with length \u003e32 for chosen PGs; once the client subscribes, kernel I/O paths such as RBD mount/probe via calc_target deterministically invoke apply_upmap/get_temp_osds and overflow the stack buffer.\nPR:N - Exploitation requires no privileges on the victim host; any machine acting as a Ceph client that receives a forged osdmap from a cluster peer over the network can be attacked without local user capabilities or namespace tricks.\nUI:N - No victim user action is needed during exploitation beyond the host already being a Ceph client; forged osdmaps are applied automatically and the overflow fires on subsequent kernel client operations without interactive steps.\nS:U - Impact is confined to kernel memory on the Ceph client host (privilege escalation or crash); it does not cross VM, IOMMU, or sandbox boundaries to other security authorities.\nC:H - KASAN-confirmed stack out-of-bounds write in ceph_pg_to_up_acting_osds corrupts adjacent stack memory and can be leveraged for arbitrary kernel memory disclosure, not merely a bounded leak.\nI:H - Unbounded copy loops in apply_upmap() and get_temp_osds() write attacker-controlled u32 OSD IDs past the fixed osds[CEPH_PG_MAX_SIZE] stack array, enabling control-flow hijack and arbitrary kernel writes.\nA:H - The reported reproducer triggers KASAN stack-out-of-bounds followed by kernel BUG in ceph_pg_to_up_acting_osds, demonstrating a reliable kernel oops or panic from malformed osdmap processing on Ceph clients."
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        {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: timer: don\u0027t re-enter an instance callback that is still running\n\nThe userspace-driven timer (utimer) TRIGGER ioctl calls\nsnd_timer_interrupt() directly with no serialization, so two threads\ntriggering the same utimer can run snd_timer_interrupt() on one\nsnd_timer concurrently.\n\nsnd_timer_process_callbacks() drops timer-\u003elock around each instance\ncallback and marks the in-flight callback with the single\nSNDRV_TIMER_IFLG_CALLBACK bit; snd_timer_close_locked() waits on that\nbit to drain an in-flight callback before freeing the instance. The bit\ncannot represent two concurrent callbacks: when a second interrupt\nre-queues an instance whose callback is still running, both run at once,\nthe first to finish clears the bit, and the close-path drain then frees\nthe instance (and its callback_data) while the other callback is still\nlive - a use-after-free reachable by any user able to open\n/dev/snd/timer, both via a user timer instance and via a sequencer queue\ntimer bound to the utimer.\n\nsnd_timer_interrupt() sets IFLG_CALLBACK before dropping timer-\u003elock, so\na concurrent interrupt already observes it under the lock. Skip\nre-queuing an instance (and its slaves) to the ack/sack list while its\ncallback is in flight; the accumulated pticks are delivered on the next\ntick, so no event is lost."
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              "value": "AV:L - The bug is reached purely through local syscalls: opening /dev/snd/timer, the SNDRV_TIMER_IOCTL_CREATE ioctl to obtain a utimer fd, and concurrent SNDRV_TIMER_IOCTL_TRIGGER ioctls on that fd. No network or physical access is involved.\nAC:L - The attacker owns every side of the race: two of its own threads issue the TRIGGER ioctls that run snd_timer_interrupt() concurrently, while a third closes the timer instance, and the ioctl can be spammed in a tight loop until the window is hit. Nothing depends on conditions outside attacker control.\nPR:L - Only the ability to open /dev/snd/timer is needed, which any member of the audio group, any logged-in desktop session (granted via logind ACLs), or any Android media/app process has. No capabilities, no root, and the commit explicitly states it is reachable by \"any user able to open /dev/snd/timer\".\nUI:N - The attacking process creates the utimer, triggers it from its own threads, and closes the instance entirely on its own. No victim action, no filesystem mount, and no privileged helper participation is required.\nS:U - The use-after-free corrupts kernel slab memory in the same security authority as the attacked kernel; there is no VM, IOMMU, or sandbox boundary crossed by the freed snd_timer_instance or its callback_data.\nC:H - The freed snd_timer_instance and its callback_data (snd_timer_user with its event ring buffer, or snd_seq_queue) are re-read by the still-running callback after being reallocated, so an attacker who heap-sprays the slot can turn the dangling read/queue-append into disclosure of arbitrary reallocated kernel memory back through the timer read() interface.\nI:H - The live callback (snd_timer_user_tinterrupt/ccallback or the sequencer queue tick handler) keeps writing into the freed object - event queue indices, pointers, and spinlock state - giving a controlled write into attacker-groomed slab contents, a classic UAF primitive leveragable for control-flow hijack and privilege escalation.\nA:H - Even without successful grooming, the concurrent callback touches freed memory and manipulates list heads of a destroyed instance, producing list corruption, KASAN splats, and kernel oops or panic; the ioctl can be re-run repeatedly to crash the machine at will."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath9k: hif_usb: don\u0027t dereference hif_dev after re-arming firmware request\n\nath9k_hif_request_firmware() re-arms an asynchronous firmware load via\nrequest_firmware_nowait(), passing hif_dev as the completion context, and\nthen still dereferences hif_dev:\n\n\tdev_info(\u0026hif_dev-\u003eudev-\u003edev, \"ath9k_htc: Firmware %s requested\\n\",\n\t\t hif_dev-\u003efw_name);\n\nThe re-armed callback ath9k_hif_usb_firmware_cb() runs on the \"events\"\nworkqueue and, when the firmware is missing, walks the retry chain into\nath9k_hif_usb_firmware_fail() -\u003e complete_all(\u0026hif_dev-\u003efw_done). That\nreleases the wait_for_completion(\u0026hif_dev-\u003efw_done) in a concurrent\nath9k_hif_usb_disconnect(), which then kfree()s hif_dev. The trailing\ndev_info() in the frame that re-armed the request can therefore read freed\nmemory (hif_dev-\u003eudev, the first field of struct hif_device_usb):\n\n  BUG: KASAN: slab-use-after-free in ath9k_hif_request_firmware\n  Read of size 8 ... by task kworker/...\n   ath9k_hif_request_firmware\n   ath9k_hif_usb_firmware_cb           drivers/net/wireless/ath/ath9k/hif_usb.c:1247\n   request_firmware_work_func\n  Allocated by ...:\n   ath9k_hif_usb_probe                 drivers/net/wireless/ath/ath9k/hif_usb.c\n  Freed by ...:\n   ath9k_hif_usb_disconnect -\u003e kfree   drivers/net/wireless/ath/ath9k/hif_usb.c\n\nThe fw_done barrier only makes disconnect wait for the firmware chain to\n*terminate*; it does not protect the outer ath9k_hif_request_firmware()\nframe that re-armed the request and keeps touching hif_dev afterwards.\n\nDrop the post-request dev_info(): it is the only use of hif_dev after the\nasync request is armed, and it is purely informational (the dev_err() on the\nfailure path runs only when request_firmware_nowait() did not arm a callback,\nso hif_dev is still alive there).\n\nThis was first reported by syzbot as a single, non-reproduced crash that was\nlater auto-obsoleted, and was independently rediscovered by the reFuzz fuzzer,\nwhich produced a C reproducer (USB-gadget connect/disconnect of an ath9k_htc\ndevice whose firmware download fails). The vulnerable code is unchanged and\nstill present in v7.1-rc6, where the slab-use-after-free reproduces under KASAN\nonce the (sub-microsecond) race window is widened."
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          "url": "https://git.kernel.org/stable/c/dad9f96945d77ecd4708f730c06ef54dcd8cc057"
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      ],
      "title": "wifi: ath9k: hif_usb: don\u0027t dereference hif_dev after re-arming firmware request",
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix stale skb-\u003eprev after async crypto steals a GSO segment\n\nskb_gso_segment() leaves the segment list head with -\u003eprev pointing at\nthe last segment, an invariant validate_xmit_skb_list() relies on when\nit sets its tail pointer (tail = skb-\u003eprev).\n\nWhen validate_xmit_xfrm() walks a GSO list and some segments are stolen\nby async crypto (-\u003exmit() returns -EINPROGRESS), those segments are\nunlinked from the list but the head -\u003eprev is never updated.  If the\nlast segment is the one stolen, the returned head still has -\u003eprev\npointing at it, even though it is now owned by the crypto engine and may\nbe freed.  validate_xmit_skb_list() later does tail-\u003enext = skb, writing\nthrough that stale pointer -- a use-after-free.\n\nRepoint skb-\u003eprev at the last retained segment before returning."
        }
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              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.1.178",
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              "status": "unaffected",
              "version": "6.6.145",
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            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
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            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "3.6",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.12.97",
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                  "vulnerable": true
                },
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                  "vulnerable": true
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                  "versionEndExcluding": "7.1.5",
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              "negate": false,
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: check connect-related permissions on TCP Fast Open\n\nSimilar to Landlock, SELinux was not updated when TCP Fast Open\nsupport was introduced to ensure connect-related permissions are\nchecked when using TCP Fast Open. Update its socket_sendmsg() hook to\ncall selinux_socket_connect() when MSG_FASTOPEN is passed."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Exploitation requires a confined local process to invoke sendmsg(2)/sendto(2) with MSG_FASTOPEN; the vulnerable selinux_socket_sendmsg() LSM hook runs on the syscall path before TCP fast-open performs its implicit connect.\nAC:L - A confined task with SOCKET__WRITE can reliably trigger the bypass with one sendmsg/sendto using MSG_FASTOPEN and a destination address; TFO client is enabled by default (sysctl_tcp_fastopen=TFO_CLIENT_ENABLE) and no race or special victim state is needed.\nPR:L - The attacker must be an unprivileged process in a SELinux domain that grants socket write but denies connect/name_connect (e.g., confined Android apps, container workloads, hardened service domains); no real root or init-namespace privileges are required.\nUI:N - No victim interaction is required; the confined attacker process directly issues the bypassing syscall without needing another user or administrator to perform any action.\nS:C - Successful exploitation crosses the SELinux MAC confinement boundary, allowing a sandboxed domain to establish outbound TCP/MPTCP connections that connect(2) and name_connect policy would have blocked, escaping the intended network policy scope.\nC:H - Bypassing connect and name_connect mediation lets a confined process open TCP/MPTCP sessions to SELinux-forbidden destinations and read arbitrary response data from those services (internal APIs, metadata endpoints, databases), constituting unauthorized information disclosure.\nI:H - The bypass enables unauthorized outbound connection establishment and transmission of arbitrary application data (including SYN-cookie payload) to hosts and ports explicitly denied by SELinux connect/name_connect rules, violating integrity of the confinement policy.\nA:N - This is a pure SELinux LSM policy-bypass flaw with no kernel memory corruption, panic, oops, hang, or resource exhaustion; exploitation does not impact system availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-18T06:56:32.099Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/11406d0d7e11b4e525bb2ace2c70107031d058da"
        },
        {
          "url": "https://git.kernel.org/stable/c/e507633bf76bccf1a6af27771fb0d6e2862b7eac"
        },
        {
          "url": "https://git.kernel.org/stable/c/d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc633a598206d4f23af782db7c0b5f3a82751d2c"
        },
        {
          "url": "https://git.kernel.org/stable/c/646ebbc5f2ff9147d084e1213143f091026a611c"
        },
        {
          "url": "https://git.kernel.org/stable/c/44c74d27d1b9aaa99fa8a83640c1223575262b80"
        }
      ],
      "title": "selinux: check connect-related permissions on TCP Fast Open",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72243",
    "datePublished": "2026-08-15T05:54:31.117Z",
    "dateReserved": "2026-08-09T03:40:39.914Z",
    "dateUpdated": "2026-08-18T06:56:32.099Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}