CVE-2024-36905
tcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets
Description
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
INFO
Published Date :
May 30, 2024, 4:15 p.m.
Last Modified :
Jan. 22, 2026, 8:27 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected Linux kernel packages.
- Reboot the system after updating the kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-36905.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-36905 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-36905
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-36905 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-36905 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 22, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-369 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:2.6.12:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:2.6.12:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:2.6.12:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:2.6.12:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:2.6.12:-:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.8.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.31 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.276 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.217 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.91 *cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc7:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.159 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.12.1 up to (excluding) 4.19.314 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added Reference Type kernel.org: https://git.kernel.org/stable/c/2552c9d9440f8e7a2ed0660911ff00f25b90a0a4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/34e41a031fd7523bf1cd00a2adca2370aebea270 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/3fe4ef0568a48369b1891395d13ac593b1ba41b1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/413c33b9f3bc36fdf719690a78824db9f88a9485 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/94062790aedb505bdda209b10bea47b294d6394f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cbf232ba11bc86a5281b4f00e1151349ef4d45cf Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ed5e279b69e007ce6c0fe82a5a534c1b19783214 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f47d0d32fa94e815fdd78b8b88684873e67939f4 Types: Patch Added Reference Type kernel.org: https://www.openwall.com/lists/oss-security/2024/10/29/1 Types: Mailing List Added Reference Type CISA-ADP: https://access.redhat.com/security/cve/cve-2024-36905 Types: Third Party Advisory Added Reference Type CISA-ADP: https://alas.aws.amazon.com/cve/html/CVE-2024-36905.html Types: Third Party Advisory Added Reference Type CISA-ADP: https://github.com/cisagov/vulnrichment/issues/130 Types: Issue Tracking Added Reference Type CISA-ADP: https://www.openwall.com/lists/oss-security/2024/11/12/4 Types: Mailing List Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2024/10/29/1 Types: Mailing List Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2024/10/30/1 Types: Mailing List Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2024/11/12/4 Types: Mailing List Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2024/11/12/5 Types: Mailing List Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2024/11/12/6 Types: Mailing List Added Reference Type CVE: https://git.kernel.org/stable/c/2552c9d9440f8e7a2ed0660911ff00f25b90a0a4 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/34e41a031fd7523bf1cd00a2adca2370aebea270 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/3fe4ef0568a48369b1891395d13ac593b1ba41b1 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/413c33b9f3bc36fdf719690a78824db9f88a9485 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/94062790aedb505bdda209b10bea47b294d6394f Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/cbf232ba11bc86a5281b4f00e1151349ef4d45cf Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/ed5e279b69e007ce6c0fe82a5a534c1b19783214 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f47d0d32fa94e815fdd78b8b88684873e67939f4 Types: Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html Types: Third Party Advisory Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Types: Third Party Advisory Added Reference Type CVE: https://security.netapp.com/advisory/ntap-20240905-0005/ Types: Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jan. 14, 2025
Action Type Old Value New Value Removed CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Removed CWE CWE-369 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2024/10/29/1 Added Reference http://www.openwall.com/lists/oss-security/2024/10/30/1 Added Reference http://www.openwall.com/lists/oss-security/2024/11/12/4 Added Reference http://www.openwall.com/lists/oss-security/2024/11/12/5 Added Reference http://www.openwall.com/lists/oss-security/2024/11/12/6 Added Reference https://git.kernel.org/stable/c/2552c9d9440f8e7a2ed0660911ff00f25b90a0a4 Added Reference https://git.kernel.org/stable/c/34e41a031fd7523bf1cd00a2adca2370aebea270 Added Reference https://git.kernel.org/stable/c/3fe4ef0568a48369b1891395d13ac593b1ba41b1 Added Reference https://git.kernel.org/stable/c/413c33b9f3bc36fdf719690a78824db9f88a9485 Added Reference https://git.kernel.org/stable/c/94062790aedb505bdda209b10bea47b294d6394f Added Reference https://git.kernel.org/stable/c/cbf232ba11bc86a5281b4f00e1151349ef4d45cf Added Reference https://git.kernel.org/stable/c/ed5e279b69e007ce6c0fe82a5a534c1b19783214 Added Reference https://git.kernel.org/stable/c/f47d0d32fa94e815fdd78b8b88684873e67939f4 Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Added Reference https://security.netapp.com/advisory/ntap-20240905-0005/ -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://access.redhat.com/security/cve/cve-2024-36905 Added Reference https://alas.aws.amazon.com/cve/html/CVE-2024-36905.html Added Reference https://github.com/cisagov/vulnrichment/issues/130 Added Reference https://www.openwall.com/lists/oss-security/2024/11/12/4 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 19, 2024
Action Type Old Value New Value Added Reference kernel.org https://www.openwall.com/lists/oss-security/2024/10/29/1 [No types assigned] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 19, 2024
Action Type Old Value New Value Removed CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 CISA-ADP AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 05, 2024
Action Type Old Value New Value Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 03, 2024
Action Type Old Value New Value Added CWE CISA-ADP CWE-369 Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 27, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 27, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html [No types assigned] -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 30, 2024
Action Type Old Value New Value Added Description 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 Added Reference kernel.org https://git.kernel.org/stable/c/34e41a031fd7523bf1cd00a2adca2370aebea270 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ed5e279b69e007ce6c0fe82a5a534c1b19783214 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/413c33b9f3bc36fdf719690a78824db9f88a9485 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2552c9d9440f8e7a2ed0660911ff00f25b90a0a4 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/3fe4ef0568a48369b1891395d13ac593b1ba41b1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f47d0d32fa94e815fdd78b8b88684873e67939f4 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/cbf232ba11bc86a5281b4f00e1151349ef4d45cf [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/94062790aedb505bdda209b10bea47b294d6394f [No types assigned]