HighFix available
gtp: Fix use-after-free in __gtp_encap_destroy().
Type: advisorySources: OSV
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: __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_r
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.14.322, 4.19.291, 5.10.188, 5.15.121, 5.4.251, 6.1.39, 6.3.13, 6.4.4
- CVEs
- CVE-2023-54142
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 08:57 UTC · Revision 1
Source evidence
gtp: Fix use-after-free in __gtp_encap_destroy().
core-osv · Original sourcePublished 24 Dec 2025, 13:06 UTC
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: __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_r
osv:CVE-2023-54142
Kernel
Fixed versions: 4.14.322, 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.39, 6.3.13, 6.4.4
Complete source record
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],
"modified": "2026-10-08T02:48:35.852482025Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/17d6b6354f0025b7c10a56da783fd0cbb3819c5d",
"https://git.kernel.org/stable/c/58fa341327fdb4bdf92597fd8796a9abc8d20ea3",
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"https://git.kernel.org/stable/c/bccc7ace12e69dee4684a3bb4b69737972e570d6",
"https://git.kernel.org/stable/c/ce3aee7114c575fab32a5e9e939d4bbb3dcca79f",
"https://git.kernel.org/stable/c/d38039697184aacff1cf576e14ef583112fdefef",
"https://git.kernel.org/stable/c/dae6095bdb24f537b4798ffd9201515b97bac94e",
"https://git.kernel.org/stable/c/e5aa6d829831a55a693dbaeb58f8d22ba7f2b3e6",
"https://git.kernel.org/stable/c/ebd6d2077a083329110695a996c00e8ca94bc640",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54142.json",
"https://nvd.nist.gov/vuln/detail/CVE-2023-54142",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54142.json"
}
},
"related_cves": [
{
"value": "CVE-2023-54142",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 98289,
"published_at": "2025-12-24T13:06:56.204+00:00"
}