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Common Weakness Enumeration

CWE-416

Allowed

Use After Free

Abstraction: Variant · Status: Stable

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

10881 vulnerabilities reference this CWE, most recent first.

GHSA-WP52-H62R-QWJ4

Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2025-11-03 21:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

tipc: Fix use-after-free of kernel socket in cleanup_bearer().

syzkaller reported a use-after-free of UDP kernel socket in cleanup_bearer() without repro. [0][1]

When bearer_disable() calls tipc_udp_disable(), cleanup of the UDP kernel socket is deferred by work calling cleanup_bearer().

tipc_net_stop() waits for such works to finish by checking tipc_net(net)->wq_count. However, the work decrements the count too early before releasing the kernel socket, unblocking cleanup_net() and resulting in use-after-free.

Let's move the decrement after releasing the socket in cleanup_bearer().

[0]: ref_tracker: net notrefcnt@000000009b3d1faf has 1/1 users at sk_alloc+0x438/0x608 inet_create+0x4c8/0xcb0 __sock_create+0x350/0x6b8 sock_create_kern+0x58/0x78 udp_sock_create4+0x68/0x398 udp_sock_create+0x88/0xc8 tipc_udp_enable+0x5e8/0x848 __tipc_nl_bearer_enable+0x84c/0xed8 tipc_nl_bearer_enable+0x38/0x60 genl_family_rcv_msg_doit+0x170/0x248 genl_rcv_msg+0x400/0x5b0 netlink_rcv_skb+0x1dc/0x398 genl_rcv+0x44/0x68 netlink_unicast+0x678/0x8b0 netlink_sendmsg+0x5e4/0x898 ____sys_sendmsg+0x500/0x830

[1]: BUG: KMSAN: use-after-free in udp_hashslot include/net/udp.h:85 [inline] BUG: KMSAN: use-after-free in udp_lib_unhash+0x3b8/0x930 net/ipv4/udp.c:1979 udp_hashslot include/net/udp.h:85 [inline] udp_lib_unhash+0x3b8/0x930 net/ipv4/udp.c:1979 sk_common_release+0xaf/0x3f0 net/core/sock.c:3820 inet_release+0x1e0/0x260 net/ipv4/af_inet.c:437 inet6_release+0x6f/0xd0 net/ipv6/af_inet6.c:489 __sock_release net/socket.c:658 [inline] sock_release+0xa0/0x210 net/socket.c:686 cleanup_bearer+0x42d/0x4c0 net/tipc/udp_media.c:819 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xcaf/0x1c90 kernel/workqueue.c:3310 worker_thread+0xf6c/0x1510 kernel/workqueue.c:3391 kthread+0x531/0x6b0 kernel/kthread.c:389 ret_from_fork+0x60/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:244

Uninit was created at: slab_free_hook mm/slub.c:2269 [inline] slab_free mm/slub.c:4580 [inline] kmem_cache_free+0x207/0xc40 mm/slub.c:4682 net_free net/core/net_namespace.c:454 [inline] cleanup_net+0x16f2/0x19d0 net/core/net_namespace.c:647 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xcaf/0x1c90 kernel/workqueue.c:3310 worker_thread+0xf6c/0x1510 kernel/workqueue.c:3391 kthread+0x531/0x6b0 kernel/kthread.c:389 ret_from_fork+0x60/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:244

CPU: 0 UID: 0 PID: 54 Comm: kworker/0:2 Not tainted 6.12.0-rc1-00131-gf66ebf37d69c #7 91723d6f74857f70725e1583cba3cf4adc716cfa Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 Workqueue: events cleanup_bearer

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-56642"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T15:15:23Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: Fix use-after-free of kernel socket in cleanup_bearer().\n\nsyzkaller reported a use-after-free of UDP kernel socket\nin cleanup_bearer() without repro. [0][1]\n\nWhen bearer_disable() calls tipc_udp_disable(), cleanup\nof the UDP kernel socket is deferred by work calling\ncleanup_bearer().\n\ntipc_net_stop() waits for such works to finish by checking\ntipc_net(net)-\u003ewq_count.  However, the work decrements the\ncount too early before releasing the kernel socket,\nunblocking cleanup_net() and resulting in use-after-free.\n\nLet\u0027s move the decrement after releasing the socket in\ncleanup_bearer().\n\n[0]:\nref_tracker: net notrefcnt@000000009b3d1faf has 1/1 users at\n     sk_alloc+0x438/0x608\n     inet_create+0x4c8/0xcb0\n     __sock_create+0x350/0x6b8\n     sock_create_kern+0x58/0x78\n     udp_sock_create4+0x68/0x398\n     udp_sock_create+0x88/0xc8\n     tipc_udp_enable+0x5e8/0x848\n     __tipc_nl_bearer_enable+0x84c/0xed8\n     tipc_nl_bearer_enable+0x38/0x60\n     genl_family_rcv_msg_doit+0x170/0x248\n     genl_rcv_msg+0x400/0x5b0\n     netlink_rcv_skb+0x1dc/0x398\n     genl_rcv+0x44/0x68\n     netlink_unicast+0x678/0x8b0\n     netlink_sendmsg+0x5e4/0x898\n     ____sys_sendmsg+0x500/0x830\n\n[1]:\nBUG: KMSAN: use-after-free in udp_hashslot include/net/udp.h:85 [inline]\nBUG: KMSAN: use-after-free in udp_lib_unhash+0x3b8/0x930 net/ipv4/udp.c:1979\n udp_hashslot include/net/udp.h:85 [inline]\n udp_lib_unhash+0x3b8/0x930 net/ipv4/udp.c:1979\n sk_common_release+0xaf/0x3f0 net/core/sock.c:3820\n inet_release+0x1e0/0x260 net/ipv4/af_inet.c:437\n inet6_release+0x6f/0xd0 net/ipv6/af_inet6.c:489\n __sock_release net/socket.c:658 [inline]\n sock_release+0xa0/0x210 net/socket.c:686\n cleanup_bearer+0x42d/0x4c0 net/tipc/udp_media.c:819\n process_one_work kernel/workqueue.c:3229 [inline]\n process_scheduled_works+0xcaf/0x1c90 kernel/workqueue.c:3310\n worker_thread+0xf6c/0x1510 kernel/workqueue.c:3391\n kthread+0x531/0x6b0 kernel/kthread.c:389\n ret_from_fork+0x60/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:244\n\nUninit was created at:\n slab_free_hook mm/slub.c:2269 [inline]\n slab_free mm/slub.c:4580 [inline]\n kmem_cache_free+0x207/0xc40 mm/slub.c:4682\n net_free net/core/net_namespace.c:454 [inline]\n cleanup_net+0x16f2/0x19d0 net/core/net_namespace.c:647\n process_one_work kernel/workqueue.c:3229 [inline]\n process_scheduled_works+0xcaf/0x1c90 kernel/workqueue.c:3310\n worker_thread+0xf6c/0x1510 kernel/workqueue.c:3391\n kthread+0x531/0x6b0 kernel/kthread.c:389\n ret_from_fork+0x60/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:244\n\nCPU: 0 UID: 0 PID: 54 Comm: kworker/0:2 Not tainted 6.12.0-rc1-00131-gf66ebf37d69c #7 91723d6f74857f70725e1583cba3cf4adc716cfa\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014\nWorkqueue: events cleanup_bearer",
  "id": "GHSA-wp52-h62r-qwj4",
  "modified": "2025-11-03T21:31:56Z",
  "published": "2024-12-27T15:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e69457f9dfae67435f3ccf29008768eae860415"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/650ee9a22d7a2de8999fac2d45983597a0c22359"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a2fa13312e51a621f652d522d7e2df7066330b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d00d4470bf8c4282617a3a10e76b20a9c7e4cffa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d2a4894f238551eae178904e7f45af87577074fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d62d5180c036eeac09f80660edc7a602b369125f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e48b211c4c59062cb6dd6c2c37c51a7cc235a464"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WP65-VQ49-5Q96

Vulnerability from github – Published: 2024-05-03 03:30 – Updated: 2024-05-03 03:30
VLAI
Details

Foxit PDF Reader AcroForm Doc Object Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of Doc objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21293.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-38117"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-03T02:15:55Z",
    "severity": "HIGH"
  },
  "details": "Foxit PDF Reader AcroForm Doc Object Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the handling of Doc objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-21293.",
  "id": "GHSA-wp65-vq49-5q96",
  "modified": "2024-05-03T03:30:55Z",
  "published": "2024-05-03T03:30:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-38117"
    },
    {
      "type": "WEB",
      "url": "https://www.foxit.com/support/security-bulletins.html"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-995"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WP73-9HPQ-G5R5

Vulnerability from github – Published: 2024-05-03 03:31 – Updated: 2024-05-03 03:31
VLAI
Details

PDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-20932.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-42059"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-03T03:15:40Z",
    "severity": "HIGH"
  },
  "details": "PDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.\n. Was ZDI-CAN-20932.",
  "id": "GHSA-wp73-9hpq-g5r5",
  "modified": "2024-05-03T03:31:01Z",
  "published": "2024-05-03T03:31:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-42059"
    },
    {
      "type": "WEB",
      "url": "https://www.tracker-software.com/support/security-bulletins.html"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1361"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WP75-7GQM-J93M

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-06-16 03:30
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

power: supply: ab8500: Fix use-after-free in power_supply_changed()

Using the devm_ variant for requesting IRQ before the devm_ variant for allocating/registering the power_supply handle, means that the power_supply handle will be deallocated/unregistered before the interrupt handler (since devm_ naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just after the power_supply handle has been freed, but just before the corresponding unregistration of the IRQ handler has run.

This will lead to the IRQ handler calling power_supply_changed() with a freed power_supply handle. Which usually crashes the system or otherwise silently corrupts the memory...

Note that there is a similar situation which can also happen during probe(); the possibility of an interrupt firing before registering the power_supply handle. This would then lead to the nasty situation of using the power_supply handle uninitialized in power_supply_changed().

Commit 1c1f13a006ed ("power: supply: ab8500: Move to componentized binding") introduced this issue during a refactorization. Fix this racy use-after-free by making sure the IRQ is requested after the registration of the power_supply handle.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-45946"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:10Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: ab8500: Fix use-after-free in power_supply_changed()\n\nUsing the `devm_` variant for requesting IRQ _before_ the `devm_`\nvariant for allocating/registering the `power_supply` handle, means that\nthe `power_supply` handle will be deallocated/unregistered _before_ the\ninterrupt handler (since `devm_` naturally deallocates in reverse\nallocation order). This means that during removal, there is a race\ncondition where an interrupt can fire just _after_ the `power_supply`\nhandle has been freed, *but* just _before_ the corresponding\nunregistration of the IRQ handler has run.\n\nThis will lead to the IRQ handler calling `power_supply_changed()` with\na freed `power_supply` handle. Which usually crashes the system or\notherwise silently corrupts the memory...\n\nNote that there is a similar situation which can also happen during\n`probe()`; the possibility of an interrupt firing _before_ registering\nthe `power_supply` handle. This would then lead to the nasty situation\nof using the `power_supply` handle *uninitialized* in\n`power_supply_changed()`.\n\nCommit 1c1f13a006ed (\"power: supply: ab8500: Move to componentized\nbinding\") introduced this issue during a refactorization. Fix this racy\nuse-after-free by making sure the IRQ is requested _after_ the\nregistration of the `power_supply` handle.",
  "id": "GHSA-wp75-7gqm-j93m",
  "modified": "2026-06-16T03:30:32Z",
  "published": "2026-05-27T15:33:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45946"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43cbb78ee047b9b12d096d40e3be265969d4c1f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46dbda27b028d78087667e8280966b99cec015ca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/551672981fe227122258a25a385a05f5c0746ad6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/709db4b476e254579d9c48ec34d397a41ca0c407"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/847eeb6c0efcd76c7def73857cf798a4fcd8f79b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4af8a98bb52825a5331ae1d0604c0ea6956ba4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f50433f2603def08b21a4bf2fd238687fb5cbde9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WP8X-3MWG-2PGW

Vulnerability from github – Published: 2024-10-25 12:31 – Updated: 2024-10-25 18:30
VLAI
Details

In lwis_allocator_free of lwis_allocator.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-47033"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-25T11:15:17Z",
    "severity": "HIGH"
  },
  "details": "In lwis_allocator_free of lwis_allocator.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.",
  "id": "GHSA-wp8x-3mwg-2pgw",
  "modified": "2024-10-25T18:30:49Z",
  "published": "2024-10-25T12:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47033"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/pixel/2024-10-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WP9W-FP98-2CXM

Vulnerability from github – Published: 2026-05-21 12:31 – Updated: 2026-05-21 15:34
VLAI
Details

A file descriptor can be closed while a thread is blocked in a poll(2) or select(2) call waiting for that descriptor. Because the blocked thread does not hold a reference to the underlying object, this closure may result in the object being freed while the thread remains blocked. In this situation, the kernel must remove the blocked thread from the per-object wait queue prior to freeing the object.

In the case of some file descriptor types, the kernel failed to unlink blocked threads from the object before freeing it. When the blocked thread is subsequently woken, it accesses memory that has already been freed resulting in a use-after-free vulnerability.

The use-after-free vulnerability may be triggered by an unprivileged local user and can be exploited to obtain superuser privileges.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-45251"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-21T10:16:26Z",
    "severity": "HIGH"
  },
  "details": "A file descriptor can be closed while a thread is blocked in a poll(2) or select(2) call waiting for that descriptor.  Because the blocked thread does not hold a reference to the underlying object, this closure may result in the object being freed while the thread remains blocked.  In this situation, the kernel must remove the blocked thread from the per-object wait queue prior to freeing the object.\n\nIn the case of some file descriptor types, the kernel failed to unlink blocked threads from the object before freeing it.  When the blocked thread is subsequently woken, it accesses memory that has already been freed resulting in a use-after-free vulnerability.\n\nThe use-after-free vulnerability may be triggered by an unprivileged local user and can be exploited to obtain superuser privileges.",
  "id": "GHSA-wp9w-fp98-2cxm",
  "modified": "2026-05-21T15:34:08Z",
  "published": "2026-05-21T12:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45251"
    },
    {
      "type": "WEB",
      "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:19.file.asc"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WPG8-RFJM-9G3W

Vulnerability from github – Published: 2024-05-21 18:31 – Updated: 2025-01-06 21:30
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix use-after-free in rdata->read_into_pages()

When the network status is unstable, use-after-free may occur when read data from the server.

BUG: KASAN: use-after-free in readpages_fill_pages+0x14c/0x7e0

Call Trace: dump_stack_lvl+0x38/0x4c print_report+0x16f/0x4a6 kasan_report+0xb7/0x130 readpages_fill_pages+0x14c/0x7e0 cifs_readv_receive+0x46d/0xa40 cifs_demultiplex_thread+0x121c/0x1490 kthread+0x16b/0x1a0 ret_from_fork+0x2c/0x50

Allocated by task 2535: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x82/0x90 cifs_readdata_direct_alloc+0x2c/0x110 cifs_readdata_alloc+0x2d/0x60 cifs_readahead+0x393/0xfe0 read_pages+0x12f/0x470 page_cache_ra_unbounded+0x1b1/0x240 filemap_get_pages+0x1c8/0x9a0 filemap_read+0x1c0/0x540 cifs_strict_readv+0x21b/0x240 vfs_read+0x395/0x4b0 ksys_read+0xb8/0x150 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc

Freed by task 79: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10e/0x1a0 __kmem_cache_free+0x7a/0x1a0 cifs_readdata_release+0x49/0x60 process_one_work+0x46c/0x760 worker_thread+0x2a4/0x6f0 kthread+0x16b/0x1a0 ret_from_fork+0x2c/0x50

Last potentially related work creation: kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 insert_work+0x2b/0x130 __queue_work+0x1fe/0x660 queue_work_on+0x4b/0x60 smb2_readv_callback+0x396/0x800 cifs_abort_connection+0x474/0x6a0 cifs_reconnect+0x5cb/0xa50 cifs_readv_from_socket.cold+0x22/0x6c cifs_read_page_from_socket+0xc1/0x100 readpages_fill_pages.cold+0x2f/0x46 cifs_readv_receive+0x46d/0xa40 cifs_demultiplex_thread+0x121c/0x1490 kthread+0x16b/0x1a0 ret_from_fork+0x2c/0x50

The following function calls will cause UAF of the rdata pointer.

readpages_fill_pages cifs_read_page_from_socket cifs_readv_from_socket cifs_reconnect __cifs_reconnect cifs_abort_connection mid->callback() --> smb2_readv_callback queue_work(&rdata->work) # if the worker completes first, # the rdata is freed cifs_readv_complete kref_put cifs_readdata_release kfree(rdata) return rdata->... # UAF in readpages_fill_pages()

Similarly, this problem also occurs in the uncache_fill_pages().

Fix this by adjusts the order of condition judgment in the return statement.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-52741"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T16:15:14Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix use-after-free in rdata-\u003eread_into_pages()\n\nWhen the network status is unstable, use-after-free may occur when\nread data from the server.\n\n  BUG: KASAN: use-after-free in readpages_fill_pages+0x14c/0x7e0\n\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x38/0x4c\n   print_report+0x16f/0x4a6\n   kasan_report+0xb7/0x130\n   readpages_fill_pages+0x14c/0x7e0\n   cifs_readv_receive+0x46d/0xa40\n   cifs_demultiplex_thread+0x121c/0x1490\n   kthread+0x16b/0x1a0\n   ret_from_fork+0x2c/0x50\n   \u003c/TASK\u003e\n\n  Allocated by task 2535:\n   kasan_save_stack+0x22/0x50\n   kasan_set_track+0x25/0x30\n   __kasan_kmalloc+0x82/0x90\n   cifs_readdata_direct_alloc+0x2c/0x110\n   cifs_readdata_alloc+0x2d/0x60\n   cifs_readahead+0x393/0xfe0\n   read_pages+0x12f/0x470\n   page_cache_ra_unbounded+0x1b1/0x240\n   filemap_get_pages+0x1c8/0x9a0\n   filemap_read+0x1c0/0x540\n   cifs_strict_readv+0x21b/0x240\n   vfs_read+0x395/0x4b0\n   ksys_read+0xb8/0x150\n   do_syscall_64+0x3f/0x90\n   entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\n  Freed by task 79:\n   kasan_save_stack+0x22/0x50\n   kasan_set_track+0x25/0x30\n   kasan_save_free_info+0x2e/0x50\n   __kasan_slab_free+0x10e/0x1a0\n   __kmem_cache_free+0x7a/0x1a0\n   cifs_readdata_release+0x49/0x60\n   process_one_work+0x46c/0x760\n   worker_thread+0x2a4/0x6f0\n   kthread+0x16b/0x1a0\n   ret_from_fork+0x2c/0x50\n\n  Last potentially related work creation:\n   kasan_save_stack+0x22/0x50\n   __kasan_record_aux_stack+0x95/0xb0\n   insert_work+0x2b/0x130\n   __queue_work+0x1fe/0x660\n   queue_work_on+0x4b/0x60\n   smb2_readv_callback+0x396/0x800\n   cifs_abort_connection+0x474/0x6a0\n   cifs_reconnect+0x5cb/0xa50\n   cifs_readv_from_socket.cold+0x22/0x6c\n   cifs_read_page_from_socket+0xc1/0x100\n   readpages_fill_pages.cold+0x2f/0x46\n   cifs_readv_receive+0x46d/0xa40\n   cifs_demultiplex_thread+0x121c/0x1490\n   kthread+0x16b/0x1a0\n   ret_from_fork+0x2c/0x50\n\nThe following function calls will cause UAF of the rdata pointer.\n\nreadpages_fill_pages\n cifs_read_page_from_socket\n  cifs_readv_from_socket\n   cifs_reconnect\n    __cifs_reconnect\n     cifs_abort_connection\n      mid-\u003ecallback() --\u003e smb2_readv_callback\n       queue_work(\u0026rdata-\u003ework)  # if the worker completes first,\n                                 # the rdata is freed\n          cifs_readv_complete\n            kref_put\n              cifs_readdata_release\n                kfree(rdata)\n return rdata-\u003e...               # UAF in readpages_fill_pages()\n\nSimilarly, this problem also occurs in the uncache_fill_pages().\n\nFix this by adjusts the order of condition judgment in the return\nstatement.",
  "id": "GHSA-wpg8-rfjm-9g3w",
  "modified": "2025-01-06T21:30:49Z",
  "published": "2024-05-21T18:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52741"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2b693fe3f760c87fd9768e759f6297f743a1b3b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3684a2f6affa1ca52a5d4a12f04d0652efdee65e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa5465aeca3c66fecdf7efcf554aed79b4c4b211"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1fba1e096ffc7ec11df863a97c50203c47315b9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WPM2-8R6C-W3C6

Vulnerability from github – Published: 2023-03-21 21:30 – Updated: 2024-10-10 18:31
VLAI
Details

Use after free in WebProtect in Google Chrome prior to 111.0.5563.110 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2023-1533"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-03-21T21:15:00Z",
    "severity": "HIGH"
  },
  "details": "Use after free in WebProtect in Google Chrome prior to 111.0.5563.110 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)",
  "id": "GHSA-wpm2-8r6c-w3c6",
  "modified": "2024-10-10T18:31:06Z",
  "published": "2023-03-21T21:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1533"
    },
    {
      "type": "WEB",
      "url": "https://chromereleases.googleblog.com/2023/03/stable-channel-update-for-desktop_21.html"
    },
    {
      "type": "WEB",
      "url": "https://crbug.com/1422183"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FG3CRADL7IL5IHK4NCHG4LAYLKHFXETX"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HO3QZY4UQFP4XNF43ILMVVOABMB7KAQ5"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NGWWGQULJ7QRNP4GY57HE7OO7VMRWMPN"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202309-17"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WPMH-X6RM-9P34

Vulnerability from github – Published: 2022-08-29 20:06 – Updated: 2025-11-04 00:30
VLAI
Details

A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-0934"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-08-29T15:15:00Z",
    "severity": "HIGH"
  },
  "details": "A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.",
  "id": "GHSA-wpmh-x6rm-9p34",
  "modified": "2025-11-04T00:30:32Z",
  "published": "2022-08-29T20:06:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-0934"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:7633"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2022:8070"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2022-0934"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2057075"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html"
    },
    {
      "type": "WEB",
      "url": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=03345ecefeb0d82e3c3a4c28f27c3554f0611b39"
    },
    {
      "type": "WEB",
      "url": "https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=03345ecefeb0d82e3c3a4c28f27c3554f0611b39"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-WPPP-F8CC-X9HX

Vulnerability from github – Published: 2022-05-13 01:34 – Updated: 2022-05-13 01:34
VLAI
Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of Circle annotations. By manipulating a document's elements, an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process. Was ZDI-CAN-6212.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2018-14296"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2018-07-31T20:29:00Z",
    "severity": "HIGH"
  },
  "details": "This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of Circle annotations. By manipulating a document\u0027s elements, an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process. Was ZDI-CAN-6212.",
  "id": "GHSA-wppp-f8cc-x9hx",
  "modified": "2022-05-13T01:34:35Z",
  "published": "2022-05-13T01:34:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14296"
    },
    {
      "type": "WEB",
      "url": "https://www.foxitsoftware.com/support/security-bulletins.php"
    },
    {
      "type": "WEB",
      "url": "https://zerodayinitiative.com/advisories/ZDI-18-756"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation
Architecture and Design

Strategy: Language Selection

Choose a language that provides automatic memory management.

Mitigation
Implementation

Strategy: Attack Surface Reduction

When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.

No CAPEC attack patterns related to this CWE.