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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: clear sock-\u003esk on the failed-insert path in tipc_sk_create()\n\nWhen tipc_sk_create() fails to insert the new socket (tipc_sk_insert()\nreturns non-zero), its error path frees the sk with sk_free() but leaves\nsock-\u003esk pointing at the freed object:\n\n\tif (tipc_sk_insert(tsk)) {\n\t\tsk_free(sk);\n\t\tpr_warn(\"Socket create failed; port number exhausted\\n\");\n\t\treturn -EINVAL;\n\t}\n\nThis is harmless for plain socket(): the syscall layer clears sock-\u003eops\nbefore releasing, so tipc_release() is never called. It is not harmless\non the accept() path. tipc_accept() creates the pre-allocated child\nsocket with tipc_sk_create(net, new_sock, 0, kern); on failure it leaves\nnew_sock-\u003esk dangling and new_sock-\u003eops non-NULL, and do_accept() then\nfput()s the new file, so __sock_release() -\u003e tipc_release() runs\nlock_sock(new_sock-\u003esk) on the freed sk -- a use-after-free write of the\nsk_lock spinlock.\n\ntipc_release() already guards this exact \"failed accept() releases a\npre-allocated child\" case with \"if (sk == NULL) return 0;\", but the\nguard is bypassed because tipc_sk_create() left sock-\u003esk non-NULL\n(dangling) rather than NULL.\n\nClear sock-\u003esk on the failed-insert path so the existing tipc_release()\nNULL check fires and the use-after-free is avoided.\n\nThe tipc_sk_insert() failure is reached when the per-netns socket\nrhashtable hits its max_size (tsk_rht_params.max_size = 1048576, ~2M\nelements) -- i.e. once a netns holds ~2M TIPC sockets every insert\nreturns -E2BIG.\n\n  BUG: KASAN: slab-use-after-free in lock_sock_nested (net/core/sock.c:3839)\n  Write of size 8 at addr ffff8880047cdc38 by task init/1\n   lock_sock_nested (net/core/sock.c:3839)\n   tipc_release (net/tipc/socket.c:638)\n   __sock_release (net/socket.c:710)\n   sock_close (net/socket.c:1501)\n   __fput (fs/file_table.c:512)\n  Allocated by task 1:\n   sk_alloc (net/core/sock.c:2308)\n   tipc_sk_create (net/tipc/socket.c:487)\n   tipc_accept (net/tipc/socket.c:2744)\n   do_accept (net/socket.c:2034)\n  Freed by task 1:\n   __sk_destruct (net/core/sock.c:2391)\n   tipc_sk_create (net/tipc/socket.c:504)\n   tipc_accept (net/tipc/socket.c:2744)\n   do_accept (net/socket.c:2034)"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/pt: Reset current_op in xe_pt_update_ops_init()\n\nxe_pt_update_ops_init() fails to reset current_op to 0. On the\nvm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside\nthe xe_validation_guard() / drm_exec_until_all_locked() loop. When\nthat loop retries due to lock contention or OOM eviction\n(drm_exec_retry_on_contention() / xe_validation_retry_on_oom()),\nxe_pt_update_ops_prepare() runs again on the same vops, and each\ncall to bind_op_prepare() increments current_op without resetting it.\n\nAfter N retries current_op exceeds the array size allocated by\nxe_vma_ops_alloc(), causing an out-of-bounds write into\nSLUB-poisoned memory and a subsequent UAF crash in\nxe_migrate_update_pgtables_cpu() when reading the corrupted pt_op-\u003ebind.\n\nAlso reset needs_svm_lock and needs_invalidation which are derived in\nthe same prepare pass and would otherwise cause wrong migrate ops\nselection and redundant TLB invalidation on retry.\n\nFix this by resetting current_op, needs_svm_lock and needs_invalidation\nin xe_pt_update_ops_init().\n\nv2 (Matt):\n   - Add details in commit message.\n   - Add Fixes tag and Cc to stable@vger.kernel.org\n\n(cherry picked from commit 046045543e530605c441063535e7dca0075369a6)"
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              "value": "AV:A - The malformed element arrives in an 802.11 management frame (beacon, probe response, ML probe response or (re)association response) processed by mac80211\u0027s element parser, so the attacker must be a rogue/spoofing AP within radio range of the victim station.\nAC:L - The attacker fully controls the frame contents and simply appends a zero-length WLAN_EID_EXTENSION element inside a frame that already establishes a non-inheritance context (multi-BSSID non-transmitted profile or a Multi-Link per-STA profile), which reliably triggers the over-read every time.\nPR:N - Beacons, probe responses and association responses are parsed before or independently of any authentication or key establishment, so an unauthenticated attacker with no credentials on the network can deliver the crafted frame.\nUI:N - Stations parse beacons and probe/association responses automatically as part of scanning, roaming and staying associated; no action by the device owner is needed for the crafted frame to be processed.\nS:U - The out-of-bounds read stays within the kernel\u0027s own memory and security authority; no other component or privilege domain is crossed.\nC:L - The read is a single octet past the end of the slab object, and its value is only compared against the non-inheritance ID list, influencing whether an element is parsed \u2014 this leaks at most a narrow side-channel oracle about one adjacent heap byte rather than arbitrary memory.\nI:N - The defect is purely a read; no kernel memory is written or corrupted, and the only consequence is a possibly wrong inherit/skip decision for one element in a frame the attacker already controls.\nA:H - The slab out-of-bounds access is fatal on KASAN, hardened or debug-allocator kernels (the bug was reported as a KASAN slab-out-of-bounds splat), and can be re-triggered at will by an adjacent unauthenticated attacker to repeatedly panic the machine."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:34:52.049Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/521dd5fe6d12b0d3c275f919738dc3a07117f4a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/24154c172246ae3f0e69bb17c9111095685ceedc"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d31ebb26a14f103c9cdc5287fb20cb2d4bde901"
        },
        {
          "url": "https://git.kernel.org/stable/c/20c308d9a57722801961f816395bf825f7bde6bc"
        },
        {
          "url": "https://git.kernel.org/stable/c/84bd907361c56fbd5523eceb2682cb39da059bd5"
        },
        {
          "url": "https://git.kernel.org/stable/c/11ac7a5e75f5132f1778e0c60981d30dc29fb869"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddf2773bcc8e49a43c561f22ec1e7924215d7947"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb8afea4655ff004fa7feee825d5c79783525383"
        }
      ],
      "title": "wifi: cfg80211: bound element ID read when checking non-inheritance",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68402",
    "datePublished": "2026-08-10T12:04:22.113Z",
    "dateReserved": "2026-07-30T09:28:09.389Z",
    "dateUpdated": "2026-08-19T16:34:52.049Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}