{
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          "programFiles": [
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            "net/bluetooth/iso.c",
            "net/bluetooth/l2cap_sock.c",
            "net/bluetooth/rfcomm/sock.c",
            "net/bluetooth/sco.c"
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            }
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        },
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          "programFiles": [
            "net/bluetooth/af_bluetooth.c",
            "net/bluetooth/iso.c",
            "net/bluetooth/l2cap_sock.c",
            "net/bluetooth/rfcomm/sock.c",
            "net/bluetooth/sco.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.6.142",
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              "status": "unaffected",
              "version": "6.12.92",
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            {
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              "status": "unaffected",
              "version": "6.18.34",
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            {
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              "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\nBluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del()\n\nbt_accept_dequeue() unlinks a not-yet-accepted child from the parent\naccept queue and release_sock()s it before returning, so the returned\nsk has no caller reference and is unlocked.\n\nl2cap_sock_cleanup_listen() walks these children on listening-socket\nclose.  A concurrent HCI disconnect drives hci_rx_work -\u003e\nl2cap_conn_del() which runs l2cap_chan_del() + l2cap_sock_kill() and\nfrees the child sk and its l2cap_chan; cleanup_listen() then uses both:\n\n  BUG: KASAN: slab-use-after-free in l2cap_sock_kill\n    l2cap_sock_kill / l2cap_sock_cleanup_listen / __x64_sys_close\n  Freed by: l2cap_conn_del -\u003e l2cap_sock_close_cb -\u003e l2cap_sock_kill\n\nThis is distinct from the two fixes already in this area: commit\ne83f5e24da741 (\"Bluetooth: serialize accept_q access\") serialises the\naccept_q list/poll and takes temporary refs inside bt_accept_dequeue(),\nand CVE-2025-39860 serialises the userspace close()/accept() race by\ncalling cleanup_listen() under lock_sock() in l2cap_sock_release().\nNeither covers l2cap_conn_del() running from hci_rx_work, so this UAF\nstill reproduces on current bluetooth/master.\n\nTake the reference at the source: bt_accept_dequeue() does sock_hold()\nwhile sk is still locked, before release_sock(); callers sock_put().\ncleanup_listen() pins the chan with l2cap_chan_hold_unless_zero() under\na brief child sk lock (serialising vs l2cap_sock_teardown_cb()), drops\nit before l2cap_chan_lock(), and skips a duplicate l2cap_sock_kill() on\nSOCK_DEAD.  conn-\u003elock is not taken here: cleanup_listen() runs under\nthe parent sk lock and that would invert\nconn-\u003elock -\u003e chan-\u003elock -\u003e sk_lock (lockdep).\n\nKASAN/SMP: an unprivileged listen/close vs HCI-disconnect race produced\n12 use-after-free reports per run before this change; 0, and no lockdep\nreport, over 1600+ raced iterations after it on bluetooth/master."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The race is driven through Bluetooth L2CAP/HCI connection and disconnect handling from a nearby peer, so it is limited to Bluetooth-adjacent reachability rather than routable network access. The local listener/close side is accounted for in PR.\nAC:L - This is a race, but the attacker can reasonably control the listener close timing and the Bluetooth peer disconnect timing. The commit reports reliable unprivileged raced iterations, so no uncontrollable condition is required.\nPR:L - Creating, binding to a dynamic PSM, listening on, and closing non-raw L2CAP sockets does not require capabilities; only raw sockets or reserved PSMs need privileges. A basic unprivileged local user on the target can set up the vulnerable listener.\nUI:N - No victim user action is required once the attacker can run the unprivileged local setup and control the Bluetooth peer. The trigger is socket close racing HCI disconnect processing.\nS:U - The corruption is within the Linux kernel Bluetooth/socket subsystem and impacts the same kernel security authority. It is not a VM escape or cross-scope boundary bypass.\nC:H - The bug is a use-after-free of both the child sock and its l2cap_chan, and freed kernel heap objects can be reclaimed and used for disclosure primitives. Per kernel CVSS guidance, UAF memory corruption supports high confidentiality impact.\nI:H - The stale sock/channel pointers are used after l2cap_conn_del frees them, including through cleanup and kill paths, making heap grooming and control-flow or write-primitive exploitation plausible. Per guidance, UAF memory corruption supports high integrity impact.\nA:H - The observed failure is a KASAN slab-use-after-free in kernel Bluetooth cleanup, which can crash or oops the kernel. Repeated triggering can deny availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:35:06.665Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/751de6ec671fe75ad9cf65a0638d2a06b6a5984d"
        },
        {
          "url": "https://git.kernel.org/stable/c/407217734835d21d4e0105ebf347860dc1806f88"
        },
        {
          "url": "https://git.kernel.org/stable/c/7eebd4c2c86f573af87ff165d08a83432eb0b919"
        },
        {
          "url": "https://git.kernel.org/stable/c/5d86d2f1b4d9a508c441d3e45277ae1a73cfed57"
        },
        {
          "url": "https://git.kernel.org/stable/c/87c543e2f78d0871f271df92dab98901bbd5b6f5"
        },
        {
          "url": "https://git.kernel.org/stable/c/added1213395071470a900cc845a042fb51882a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/a5ca86a6097a8b030ca3226cd300b17ed330f966"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab1513597c6cf17cd1ad2a21e3b045421b48e022"
        }
      ],
      "title": "Bluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53357",
    "datePublished": "2026-07-02T13:43:17.077Z",
    "dateReserved": "2026-06-09T07:44:35.400Z",
    "dateUpdated": "2026-08-05T12:35:06.665Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

{
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          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/07/06/7"
          }
        ],
        "title": "CVE Program Container"
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      {
        "metrics": [
          {
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              "content": {
                "id": "CVE-2026-53359",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-08T03:56:43.137575Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-29T18:22:55.066Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/V4bel/Januscape/blob/main/assets/write-up.md"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kvm/mmu/mmu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
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              "versionType": "git"
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              "versionType": "git"
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        {
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "2.6.36"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.1.177",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.144",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.12.95",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.18.38",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.1.3",
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            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
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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\nKVM: x86: Fix shadow paging use-after-free due to unexpected role\n\nCommit 0cb2af2ea66ad (\"KVM: x86: Fix shadow paging use-after-free due\nto unexpected GFN\") fixed a shadow paging mismatch between stored and\ncomputed GFNs; the bug could be triggered by changing a PDE mapping from\noutside the guest, and then deleting a memslot.  The rmap_remove()\ncall would miss entries created after the PDE change because the GFN\nof the leaf SPTE does not match the GFN of the struct kvm_mmu_page.\n\nA similar hole however remains if the modified PDE points to a non-leaf\npage.  In this case the gfn can be made to match, but the role does not\nmatch: the original large 2MB page creates a kvm_mmu_page with direct=1,\nwhile the new 4KB needs a kvm_mmu_page with direct=0.  However,\nkvm_mmu_get_child_sp() does not compare the role, and therefore reuses\nthe page.\n\nThe next step is installing a leaf (4KB) SPTE on the new path which\nrecords an rmap entry under the gfn resolved by the walk.  But when\nthat child is zapped its parent kvm_mmu_page has direct=1 and\nkvm_mmu_page_get_gfn() computes the gfn for the 4KB page as\nsp-\u003egfn + index instead of using sp-\u003eshadowed_translation[] (or sp-\u003egfns[]\nin older kernels).  It therefore fails to remove the recorded entry.\n\nWhen the memslot is dropped the shadow page is freed but the rmap\nentry survives, as in the scenario that was already fixed.  Code that\nlater walks that gfn (dirty logging, MMU notifier invalidation, and\nso on) dereferences an sptep that lies in the freed page, causing the\nuse-after-free."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is reached through local KVM guest execution/KVM ioctls and shadow-MMU page fault handling, not by network packets or adjacent/physical input. In the highest reasonable scenario, an attacker runs code in a guest on an x86 KVM host with shadow paging/nested virtualization exposed.\nAC:L - The bug is a deterministic role-confusion/use-after-free in shadow page reuse, and the attacker can drive the guest mapping changes and later rmap walks needed to hit it. No condition outside attacker influence is required once the vulnerable KVM configuration is present.\nPR:L - The attacker needs the ability to run code in a KVM guest or otherwise access KVM VM execution interfaces, but does not need host root or administrative privileges. This is low privilege relative to the host security boundary.\nUI:N - No victim user action is required after the attacker-controlled guest or KVM workload is running. The trigger is caused by guest execution and KVM memory-management operations.\nS:C - This is a KVM guest-to-host escape class vulnerability, crossing from the guest security authority into the host kernel/hypervisor. Compromise can affect resources outside the guest\u2019s own scope.\nC:H - The stale rmap entry dereferences an SPTE pointer in freed shadow-page memory, creating a kernel use-after-free. Such memory corruption can be leveraged for host kernel information disclosure and arbitrary memory access.\nI:H - The use-after-free can corrupt host kernel shadow-MMU/rmap state and provides a plausible path to host kernel code execution or arbitrary modification. Public analysis treats this as a KVM escape class issue, so high integrity impact is defensible.\nA:H - At minimum, walking the stale rmap can dereference freed memory and crash or panic the host kernel. A malicious guest can repeatedly trigger the condition, causing high availability impact to the host and colocated guests."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T04:50:28.262Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b1337aae5e194324e4810d561764e7793f8b3864"
        },
        {
          "url": "https://git.kernel.org/stable/c/9291654d69e08542de37755cebe4d5b02c3170d1"
        },
        {
          "url": "https://git.kernel.org/stable/c/2ad3afa40ac6aa340dada122f9abfa46c0a6eb35"
        },
        {
          "url": "https://git.kernel.org/stable/c/5e470998a23e4c3d89ed24e8172cb22747e61efa"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ae7d5a6db6c190ce183e3098ca0e0846e14d462"
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