In the Linux kernel, the following vulnerability has been resolved:
tcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets
TCP_SYN_RECV state is really special, it is only used by
cross-syn connections, mostly used by fuzzers.
In the following crash [1], syzbot managed to trigger a divide
by zero in tcp_rcv_space_adjust()
A socket makes the following state transitions,
without ever calling tcp_init_transfer(),
meaning tcp_init_buffer_space() is also not called.
TCP_CLOSE
connect()
TCP_SYN_SENT
TCP_SYN_RECV
shutdown() -> tcp_shutdown(sk, SEND_SHUTDOWN)
TCP_FIN_WAIT1
To fix this issue, change tcp_shutdown() to not
perform a TCP_SYN_RECV -> TCP_FIN_WAIT1 transition,
which makes no sense anyway.
When tcp_rcv_state_process() later changes socket state
from TCP_SYN_RECV to TCP_ESTABLISH, then look at
sk->sk_shutdown to finally enter TCP_FIN_WAIT1 state,
and send a FIN packet from a sane socket state.
This means tcp_send_fin() can now be called from BH
context, and must use GFP_ATOMIC allocations.
[1]
divide error: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 1 PID: 5084 Comm: syz-executor358 Not tainted 6.9.0-rc6-syzkaller-00022-g98369dccd2f8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:tcp_rcv_space_adjust+0x2df/0x890 net/ipv4/tcp_input.c:767
Code: e3 04 4c 01 eb 48 8b 44 24 38 0f b6 04 10 84 c0 49 89 d5 0f 85 a5 03 00 00 41 8b 8e c8 09 00 00 89 e8 29 c8 48 0f af c3 31 d2 <48> f7 f1 48 8d 1c 43 49 8d 96 76 08 00 00 48 89 d0 48 c1 e8 03 48
RSP: 0018:ffffc900031ef3f0 EFLAGS: 00010246
RAX: 0c677a10441f8f42 RBX: 000000004fb95e7e RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000027d4b11f R08: ffffffff89e535a4 R09: 1ffffffff25e6ab7
R10: dffffc0000000000 R11: ffffffff8135e920 R12: ffff88802a9f8d30
R13: dffffc0000000000 R14: ffff88802a9f8d00 R15: 1ffff1100553f2da
FS: 00005555775c0380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1155bf2304 CR3: 000000002b9f2000 CR4: 0000000000350ef0
Call Trace:
<TASK>
tcp_recvmsg_locked+0x106d/0x25a0 net/ipv4/tcp.c:2513
tcp_recvmsg+0x25d/0x920 net/ipv4/tcp.c:2578
inet6_recvmsg+0x16a/0x730 net/ipv6/af_inet6.c:680
sock_recvmsg_nosec net/socket.c:1046 [inline]
sock_recvmsg+0x109/0x280 net/socket.c:1068
____sys_recvmsg+0x1db/0x470 net/socket.c:2803
___sys_recvmsg net/socket.c:2845 [inline]
do_recvmmsg+0x474/0xae0 net/socket.c:2939
__sys_recvmmsg net/socket.c:3018 [inline]
__do_sys_recvmmsg net/socket.c:3041 [inline]
__se_sys_recvmmsg net/socket.c:3034 [inline]
__x64_sys_recvmmsg+0x199/0x250 net/socket.c:3034
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faeb6363db9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcc1997168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faeb6363db9
RDX: 0000000000000001 RSI: 0000000020000bc0 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000001c
R10: 0000000000000122 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
|
History
22 Jan 2026, 20:27
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.9:rc7:*:*:*:*:*:* |
|
| First Time |
Linux
Debian Debian debian Linux Linux linux Kernel |
|
| CWE | CWE-369 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/2552c9d9440f8e7a2ed0660911ff00f25b90a0a4 - Patch | |
| References | () https://git.kernel.org/stable/c/34e41a031fd7523bf1cd00a2adca2370aebea270 - Patch | |
| References | () https://git.kernel.org/stable/c/3fe4ef0568a48369b1891395d13ac593b1ba41b1 - Patch | |
| References | () https://git.kernel.org/stable/c/413c33b9f3bc36fdf719690a78824db9f88a9485 - Patch | |
| References | () https://git.kernel.org/stable/c/94062790aedb505bdda209b10bea47b294d6394f - Patch | |
| References | () https://git.kernel.org/stable/c/cbf232ba11bc86a5281b4f00e1151349ef4d45cf - Patch | |
| References | () https://git.kernel.org/stable/c/ed5e279b69e007ce6c0fe82a5a534c1b19783214 - Patch | |
| References | () https://git.kernel.org/stable/c/f47d0d32fa94e815fdd78b8b88684873e67939f4 - Patch | |
| References | () https://www.openwall.com/lists/oss-security/2024/10/29/1 - Mailing List | |
| References | () http://www.openwall.com/lists/oss-security/2024/10/29/1 - Mailing List | |
| References | () http://www.openwall.com/lists/oss-security/2024/10/30/1 - Mailing List | |
| References | () http://www.openwall.com/lists/oss-security/2024/11/12/4 - Mailing List | |
| References | () http://www.openwall.com/lists/oss-security/2024/11/12/5 - Mailing List | |
| References | () http://www.openwall.com/lists/oss-security/2024/11/12/6 - Mailing List | |
| References | () https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html - Third Party Advisory | |
| References | () https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html - Third Party Advisory | |
| References | () https://security.netapp.com/advisory/ntap-20240905-0005/ - Third Party Advisory | |
| References | () https://access.redhat.com/security/cve/cve-2024-36905 - Third Party Advisory | |
| References | () https://alas.aws.amazon.com/cve/html/CVE-2024-36905.html - Third Party Advisory | |
| References | () https://github.com/cisagov/vulnrichment/issues/130 - Issue Tracking | |
| References | () https://www.openwall.com/lists/oss-security/2024/11/12/4 - Mailing List |
14 Jan 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : unknown |
| CWE |
21 Nov 2024, 09:22
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
| References | () https://git.kernel.org/stable/c/2552c9d9440f8e7a2ed0660911ff00f25b90a0a4 - | |
| References | () https://git.kernel.org/stable/c/34e41a031fd7523bf1cd00a2adca2370aebea270 - | |
| References | () https://git.kernel.org/stable/c/3fe4ef0568a48369b1891395d13ac593b1ba41b1 - | |
| References | () https://git.kernel.org/stable/c/413c33b9f3bc36fdf719690a78824db9f88a9485 - | |
| References | () https://git.kernel.org/stable/c/94062790aedb505bdda209b10bea47b294d6394f - | |
| References | () https://git.kernel.org/stable/c/cbf232ba11bc86a5281b4f00e1151349ef4d45cf - | |
| References | () https://git.kernel.org/stable/c/ed5e279b69e007ce6c0fe82a5a534c1b19783214 - | |
| References | () https://git.kernel.org/stable/c/f47d0d32fa94e815fdd78b8b88684873e67939f4 - |
19 Nov 2024, 20:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
19 Nov 2024, 18:35
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
05 Nov 2024, 10:17
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
03 Jul 2024, 02:03
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.8 |
| CWE | CWE-369 |
27 Jun 2024, 14:15
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
27 Jun 2024, 13:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
|
| Summary |
|
30 May 2024, 16:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-05-30 16:15
Updated : 2026-01-22 20:27
NVD link : CVE-2024-36905
Mitre link : CVE-2024-36905
CVE.ORG link : CVE-2024-36905
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE
CWE-369
Divide By Zero
