cbcvebase.
CVE-2022-50862
published 2025-12-30

CVE-2022-50862: In the Linux kernel, the following vulnerability has been resolved: bpf: prevent decl_tag from being referenced in func_proto Syzkaller was able to hit the…

PriorityP422low5.5
EPSS
0.16%
5.8th percentile
In the Linux kernel, the following vulnerability has been resolved: bpf: prevent decl_tag from being referenced in func_proto Syzkaller was able to hit the following issue: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3609 at kernel/bpf/btf.c:1946 btf_type_id_size+0x2d5/0x9d0 kernel/bpf/btf.c:1946 Modules linked in: CPU: 0 PID: 3609 Comm: syz-executor361 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:btf_type_id_size+0x2d5/0x9d0 kernel/bpf/btf.c:1946 Code: ef e8 7f 8e e4 ff 41 83 ff 0b 77 28 f6 44 24 10 18 75 3f e8 6d 91 e4 ff 44 89 fe bf 0e 00 00 00 e8 20 8e e4 ff e8 5b 91 e4 ff 0b 45 31 f6 e9 98 02 00 00 41 83 ff 12 74 18 e8 46 91 e4 ff 44 RSP: 0018:ffffc90003cefb40 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: ffff8880259c0000 RSI: ffffffff81968415 RDI: 0000000000000005 RBP: ffff88801270ca00 R08: 0000000000000005 R09: 000000000000000e R10: 0000000000000011 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000011 R14: ffff888026ee6424 R15: 0000000000000011 FS: 000055555641b300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000f2e258 CR3: 000000007110e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btf_func_proto_check kernel/bpf/btf.c:4447 [inline] btf_check_all_types kernel/bpf/btf.c:4723 [inline] btf_parse_type_sec kernel/bpf/btf.c:4752 [inline] btf_parse kernel/bpf/btf.c:5026 [inline] btf_new_fd+0x1926/0x1e70 kernel/bpf/btf.c:6892 bpf_btf_load kernel/bpf/syscall.c:4324 [inline] __sys_bpf+0xb7d/0x4cf0 kernel/bpf/syscall.c:5010 __do_sys_bpf kernel/bpf/syscall.c:5069 [inline] __se_sys_bpf kernel/bpf/syscall.c:5067 [inline] __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:5067 do_syscall_x64 arch/x86/entry/common

Affected

8 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.0.7-1 (bookworm)linux 6.0.7-1 (bookworm)
linuxlinux
linuxlinux>= bd16dee66ae4de3f1726c69ac901d2b7a53b0c86 < e9dbb4c539d058852b76937dcd7347d3f38054f2e9dbb4c539d058852b76937dcd7347d3f38054f2
linuxlinux>= bd16dee66ae4de3f1726c69ac901d2b7a53b0c86 < ea68376c8bed5cd156900852aada20c3a0874d17ea68376c8bed5cd156900852aada20c3a0874d17
linuxlinux_kernel>= 0 < 6.0.7-16.0.7-1
linuxlinux_kernel>= 0 < 6.0.7-16.0.7-1
linuxlinux_kernel>= 0 < 6.0.7-16.0.7-1
linuxlinux_kernel>= 5.16.0 < 6.0.76.0.7
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.