CVE-2023-54142 (GCVE-0-2023-54142)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:06 – Updated: 2025-12-24 13:06
VLAI?
Title
gtp: Fix use-after-free in __gtp_encap_destroy().
Summary
In the Linux kernel, the following vulnerability has been resolved: gtp: Fix use-after-free in __gtp_encap_destroy(). syzkaller reported use-after-free in __gtp_encap_destroy(). [0] It shows the same process freed sk and touched it illegally. Commit e198987e7dd7 ("gtp: fix suspicious RCU usage") added lock_sock() and release_sock() in __gtp_encap_destroy() to protect sk->sk_user_data, but release_sock() is called after sock_put() releases the last refcnt. [0]: BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: slab-use-after-free in atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:541 [inline] BUG: KASAN: slab-use-after-free in queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] BUG: KASAN: slab-use-after-free in do_raw_spin_lock include/linux/spinlock.h:186 [inline] BUG: KASAN: slab-use-after-free in __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline] BUG: KASAN: slab-use-after-free in _raw_spin_lock_bh+0x75/0xe0 kernel/locking/spinlock.c:178 Write of size 4 at addr ffff88800dbef398 by task syz-executor.2/2401 CPU: 1 PID: 2401 Comm: syz-executor.2 Not tainted 6.4.0-rc5-01219-gfa0e21fa4443 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x72/0xa0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:351 [inline] print_report+0xcc/0x620 mm/kasan/report.c:462 kasan_report+0xb2/0xe0 mm/kasan/report.c:572 check_region_inline mm/kasan/generic.c:181 [inline] kasan_check_range+0x39/0x1c0 mm/kasan/generic.c:187 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:541 [inline] queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] do_raw_spin_lock include/linux/spinlock.h:186 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline] _raw_spin_lock_bh+0x75/0xe0 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] release_sock+0x1f/0x1a0 net/core/sock.c:3526 gtp_encap_disable_sock drivers/net/gtp.c:651 [inline] gtp_encap_disable+0xb9/0x220 drivers/net/gtp.c:664 gtp_dev_uninit+0x19/0x50 drivers/net/gtp.c:728 unregister_netdevice_many_notify+0x97e/0x1520 net/core/dev.c:10841 rtnl_delete_link net/core/rtnetlink.c:3216 [inline] rtnl_dellink+0x3c0/0xb30 net/core/rtnetlink.c:3268 rtnetlink_rcv_msg+0x450/0xb10 net/core/rtnetlink.c:6423 netlink_rcv_skb+0x15d/0x450 net/netlink/af_netlink.c:2548 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x700/0x930 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x91c/0xe30 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg+0x1b7/0x200 net/socket.c:747 ____sys_sendmsg+0x75a/0x990 net/socket.c:2493 ___sys_sendmsg+0x11d/0x1c0 net/socket.c:2547 __sys_sendmsg+0xfe/0x1d0 net/socket.c:2576 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3f/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f1168b1fe5d Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 9f 1b 00 f7 d8 64 89 01 48 RSP: 002b:00007f1167edccc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f1168b1fe5d RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 RBP: 00000000004bbf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1168b80530 R15: 0000000000000000 </TASK> Allocated by task 1483: kasan_save_stack+0x22/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x ---truncated---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 01f3c64e405ab3d25887d080a103ad76f30661d2 , < d38039697184aacff1cf576e14ef583112fdefef (git)
Affected: e117a04133c673cc54292e12086a8177cd9bd4a4 , < e5aa6d829831a55a693dbaeb58f8d22ba7f2b3e6 (git)
Affected: e198987e7dd7d3645a53875151cd6f8fc425b706 , < 9c9662e2512b5e4ee7b03108802c5222e0fa77a4 (git)
Affected: e198987e7dd7d3645a53875151cd6f8fc425b706 , < bccc7ace12e69dee4684a3bb4b69737972e570d6 (git)
Affected: e198987e7dd7d3645a53875151cd6f8fc425b706 , < ebd6d2077a083329110695a996c00e8ca94bc640 (git)
Affected: e198987e7dd7d3645a53875151cd6f8fc425b706 , < 17d6b6354f0025b7c10a56da783fd0cbb3819c5d (git)
Affected: e198987e7dd7d3645a53875151cd6f8fc425b706 , < dae6095bdb24f537b4798ffd9201515b97bac94e (git)
Affected: e198987e7dd7d3645a53875151cd6f8fc425b706 , < 58fa341327fdb4bdf92597fd8796a9abc8d20ea3 (git)
Affected: e198987e7dd7d3645a53875151cd6f8fc425b706 , < ce3aee7114c575fab32a5e9e939d4bbb3dcca79f (git)
Affected: bf75202df8e473d4ee914894542f213158066d8b (git)
Affected: 76357f65f18f180f44ccbbbf713461881d0ab219 (git)
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    Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 4.14.322 , ≤ 4.14.* (semver)
Unaffected: 4.19.291 , ≤ 4.19.* (semver)
Unaffected: 5.4.251 , ≤ 5.4.* (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.3.13 , ≤ 6.3.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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{
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngtp: Fix use-after-free in __gtp_encap_destroy().\n\nsyzkaller reported use-after-free in __gtp_encap_destroy(). [0]\n\nIt shows the same process freed sk and touched it illegally.\n\nCommit e198987e7dd7 (\"gtp: fix suspicious RCU usage\") added lock_sock()\nand release_sock() in __gtp_encap_destroy() to protect sk-\u003esk_user_data,\nbut release_sock() is called after sock_put() releases the last refcnt.\n\n[0]:\nBUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]\nBUG: KASAN: slab-use-after-free in atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:541 [inline]\nBUG: KASAN: slab-use-after-free in queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]\nBUG: KASAN: slab-use-after-free in do_raw_spin_lock include/linux/spinlock.h:186 [inline]\nBUG: KASAN: slab-use-after-free in __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline]\nBUG: KASAN: slab-use-after-free in _raw_spin_lock_bh+0x75/0xe0 kernel/locking/spinlock.c:178\nWrite of size 4 at addr ffff88800dbef398 by task syz-executor.2/2401\n\nCPU: 1 PID: 2401 Comm: syz-executor.2 Not tainted 6.4.0-rc5-01219-gfa0e21fa4443 #2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x72/0xa0 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:351 [inline]\n print_report+0xcc/0x620 mm/kasan/report.c:462\n kasan_report+0xb2/0xe0 mm/kasan/report.c:572\n check_region_inline mm/kasan/generic.c:181 [inline]\n kasan_check_range+0x39/0x1c0 mm/kasan/generic.c:187\n instrument_atomic_read_write include/linux/instrumented.h:96 [inline]\n atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:541 [inline]\n queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]\n do_raw_spin_lock include/linux/spinlock.h:186 [inline]\n __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline]\n _raw_spin_lock_bh+0x75/0xe0 kernel/locking/spinlock.c:178\n spin_lock_bh include/linux/spinlock.h:355 [inline]\n release_sock+0x1f/0x1a0 net/core/sock.c:3526\n gtp_encap_disable_sock drivers/net/gtp.c:651 [inline]\n gtp_encap_disable+0xb9/0x220 drivers/net/gtp.c:664\n gtp_dev_uninit+0x19/0x50 drivers/net/gtp.c:728\n unregister_netdevice_many_notify+0x97e/0x1520 net/core/dev.c:10841\n rtnl_delete_link net/core/rtnetlink.c:3216 [inline]\n rtnl_dellink+0x3c0/0xb30 net/core/rtnetlink.c:3268\n rtnetlink_rcv_msg+0x450/0xb10 net/core/rtnetlink.c:6423\n netlink_rcv_skb+0x15d/0x450 net/netlink/af_netlink.c:2548\n netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]\n netlink_unicast+0x700/0x930 net/netlink/af_netlink.c:1365\n netlink_sendmsg+0x91c/0xe30 net/netlink/af_netlink.c:1913\n sock_sendmsg_nosec net/socket.c:724 [inline]\n sock_sendmsg+0x1b7/0x200 net/socket.c:747\n ____sys_sendmsg+0x75a/0x990 net/socket.c:2493\n ___sys_sendmsg+0x11d/0x1c0 net/socket.c:2547\n __sys_sendmsg+0xfe/0x1d0 net/socket.c:2576\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3f/0x90 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x72/0xdc\nRIP: 0033:0x7f1168b1fe5d\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 9f 1b 00 f7 d8 64 89 01 48\nRSP: 002b:00007f1167edccc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\nRAX: ffffffffffffffda RBX: 00000000004bbf80 RCX: 00007f1168b1fe5d\nRDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003\nRBP: 00000000004bbf80 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 000000000000000b R14: 00007f1168b80530 R15: 0000000000000000\n \u003c/TASK\u003e\n\nAllocated by task 1483:\n kasan_save_stack+0x22/0x50 mm/kasan/common.c:45\n kasan_set_track+0x25/0x30 mm/kasan/common.c:52\n __kasan_slab_alloc+0x\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T13:06:56.204Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d38039697184aacff1cf576e14ef583112fdefef"
        },
        {
          "url": "https://git.kernel.org/stable/c/e5aa6d829831a55a693dbaeb58f8d22ba7f2b3e6"
        },
        {
          "url": "https://git.kernel.org/stable/c/9c9662e2512b5e4ee7b03108802c5222e0fa77a4"
        },
        {
          "url": "https://git.kernel.org/stable/c/bccc7ace12e69dee4684a3bb4b69737972e570d6"
        },
        {
          "url": "https://git.kernel.org/stable/c/ebd6d2077a083329110695a996c00e8ca94bc640"
        },
        {
          "url": "https://git.kernel.org/stable/c/17d6b6354f0025b7c10a56da783fd0cbb3819c5d"
        },
        {
          "url": "https://git.kernel.org/stable/c/dae6095bdb24f537b4798ffd9201515b97bac94e"
        },
        {
          "url": "https://git.kernel.org/stable/c/58fa341327fdb4bdf92597fd8796a9abc8d20ea3"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce3aee7114c575fab32a5e9e939d4bbb3dcca79f"
        }
      ],
      "title": "gtp: Fix use-after-free in __gtp_encap_destroy().",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54142",
    "datePublished": "2025-12-24T13:06:56.204Z",
    "dateReserved": "2025-12-24T13:02:52.523Z",
    "dateUpdated": "2025-12-24T13:06:56.204Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.