CVE-2024-56661
Linux Kernel tipc Null Pointer Dereference Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: tipc: fix NULL deref in cleanup_bearer() syzbot found [1] that after blamed commit, ub->ubsock->sk was NULL when attempting the atomic_dec() : atomic_dec(&tipc_net(sock_net(ub->ubsock->sk))->wq_count); Fix this by caching the tipc_net pointer. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 0 UID: 0 PID: 5896 Comm: kworker/0:3 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events cleanup_bearer RIP: 0010:read_pnet include/net/net_namespace.h:387 [inline] RIP: 0010:sock_net include/net/sock.h:655 [inline] RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820 Code: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b RSP: 0018:ffffc9000410fb70 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900 RBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20 R10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556ca050b000 CR3: 0000000031c0c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
INFO
Published Date :
Dec. 27, 2024, 3:15 p.m.
Last Modified :
Jan. 6, 2025, 6:49 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
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-2024-56661.
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-2024-56661 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-56661 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. 06, 2025
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NIST CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.4.287:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.10.231:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.15.174:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.1.120:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.6.66:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.12.5:*:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/07b569eda6fe6a1e83be5a587abee12d1303f95e No Types Assigned https://git.kernel.org/stable/c/07b569eda6fe6a1e83be5a587abee12d1303f95e Patch Changed Reference Type https://git.kernel.org/stable/c/754ec823ee53422361da7958a8c8bf3275426912 No Types Assigned https://git.kernel.org/stable/c/754ec823ee53422361da7958a8c8bf3275426912 Patch Changed Reference Type https://git.kernel.org/stable/c/89ecda492d0a37fd00aaffc4151f1f44c26d93ac No Types Assigned https://git.kernel.org/stable/c/89ecda492d0a37fd00aaffc4151f1f44c26d93ac Patch Changed Reference Type https://git.kernel.org/stable/c/a771f349c95d3397636861a0a6462d4a7a7ecb25 No Types Assigned https://git.kernel.org/stable/c/a771f349c95d3397636861a0a6462d4a7a7ecb25 Patch Changed Reference Type https://git.kernel.org/stable/c/a852c82eda4991e21610837aaa160965be71f5cc No Types Assigned https://git.kernel.org/stable/c/a852c82eda4991e21610837aaa160965be71f5cc Patch Changed Reference Type https://git.kernel.org/stable/c/b04d86fff66b15c07505d226431f808c15b1703c No Types Assigned https://git.kernel.org/stable/c/b04d86fff66b15c07505d226431f808c15b1703c Patch Changed Reference Type https://git.kernel.org/stable/c/d1d4dfb189a115734bff81c411bc58d9e348db7d No Types Assigned https://git.kernel.org/stable/c/d1d4dfb189a115734bff81c411bc58d9e348db7d Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 27, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: tipc: fix NULL deref in cleanup_bearer() syzbot found [1] that after blamed commit, ub->ubsock->sk was NULL when attempting the atomic_dec() : atomic_dec(&tipc_net(sock_net(ub->ubsock->sk))->wq_count); Fix this by caching the tipc_net pointer. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 0 UID: 0 PID: 5896 Comm: kworker/0:3 Not tainted 6.13.0-rc1-next-20241203-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events cleanup_bearer RIP: 0010:read_pnet include/net/net_namespace.h:387 [inline] RIP: 0010:sock_net include/net/sock.h:655 [inline] RIP: 0010:cleanup_bearer+0x1f7/0x280 net/tipc/udp_media.c:820 Code: 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 3c f7 99 f6 48 8b 1b 48 83 c3 30 e8 f0 e4 60 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 1a f7 99 f6 49 83 c7 e8 48 8b 1b RSP: 0018:ffffc9000410fb70 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88802fe45a00 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000410f900 RBP: ffff88807e1f0908 R08: ffffc9000410f907 R09: 1ffff92000821f20 R10: dffffc0000000000 R11: fffff52000821f21 R12: ffff888031d19980 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88807e1f0918 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556ca050b000 CR3: 0000000031c0c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Added Reference https://git.kernel.org/stable/c/07b569eda6fe6a1e83be5a587abee12d1303f95e Added Reference https://git.kernel.org/stable/c/754ec823ee53422361da7958a8c8bf3275426912 Added Reference https://git.kernel.org/stable/c/89ecda492d0a37fd00aaffc4151f1f44c26d93ac Added Reference https://git.kernel.org/stable/c/a771f349c95d3397636861a0a6462d4a7a7ecb25 Added Reference https://git.kernel.org/stable/c/a852c82eda4991e21610837aaa160965be71f5cc Added Reference https://git.kernel.org/stable/c/b04d86fff66b15c07505d226431f808c15b1703c Added Reference https://git.kernel.org/stable/c/d1d4dfb189a115734bff81c411bc58d9e348db7d
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-56661 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-2024-56661
weaknesses.