CVE-2022-49664
published 2025-02-26CVE-2022-49664: In the Linux kernel, the following vulnerability has been resolved: tipc: move bc link creation back to tipc_node_create Shuang Li reported a NULL pointer…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.68%
48.9th percentile
In the Linux kernel, the following vulnerability has been resolved:
tipc: move bc link creation back to tipc_node_create
Shuang Li reported a NULL pointer dereference crash:
[] BUG: kernel NULL pointer dereference, address: 0000000000000068
[] RIP: 0010:tipc_link_is_up+0x5/0x10 [tipc]
[] Call Trace:
[]
[] tipc_bcast_rcv+0xa2/0x190 [tipc]
[] tipc_node_bc_rcv+0x8b/0x200 [tipc]
[] tipc_rcv+0x3af/0x5b0 [tipc]
[] tipc_udp_recv+0xc7/0x1e0 [tipc]
It was caused by the 'l' passed into tipc_bcast_rcv() is NULL. When it
creates a node in tipc_node_check_dest(), after inserting the new node
into hashtable in tipc_node_create(), it creates the bc link. However,
there is a gap between this insert and bc link creation, a bc packet
may come in and get the node from the hashtable then try to dereference
its bc link, which is NULL.
This patch is to fix it by moving the bc link creation before inserting
into the hashtable.
Note that for a preliminary node becoming "real", the bc link creation
should also be called before it's rehashed, as we don't create it for
preliminary nodes.
Affected
19 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.18.14-1 (bookworm) | linux 5.18.14-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 4cbf8ac2fe5a0846508fe02b95a5de1a90fa73f4 < 456bc338871c4a52117dd5ef29cce3745456d248 | 456bc338871c4a52117dd5ef29cce3745456d248 |
| linux | linux | >= 4cbf8ac2fe5a0846508fe02b95a5de1a90fa73f4 < 35fcb2ba35b4d9b592b558c3bcc6e0d90e213588 | 35fcb2ba35b4d9b592b558c3bcc6e0d90e213588 |
| linux | linux | >= 4cbf8ac2fe5a0846508fe02b95a5de1a90fa73f4 < e52910e671f58c619e33dac476b11b35e2d3ab6f | e52910e671f58c619e33dac476b11b35e2d3ab6f |
| linux | linux | >= 4cbf8ac2fe5a0846508fe02b95a5de1a90fa73f4 < cb8092d70a6f5f01ec1490fce4d35efed3ed996c | cb8092d70a6f5f01ec1490fce4d35efed3ed996c |
| linux | linux | >= 5.4.287 < 5.5 | 5.5 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.136-1 | 5.10.136-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 0 < 5.18.14-1 | 5.18.14-1 |
| linux | linux_kernel | >= 5.11 < 5.15.53 | 5.15.53 |
| linux | linux_kernel | >= 5.16 < 5.18.10 | 5.18.10 |
| linux | linux_kernel | >= 5.4.287 < 5.10.129 | 5.10.129 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-v579-rch8-988w: In the Linux kernel, the following vulnerability has been resolved:
tipc: move bc link creation back to tipc_node_create
Shuang Li reported a NULL p
ghsa_unreviewed·2025-03-12
CVE-2022-49664 [MEDIUM] CWE-476 GHSA-v579-rch8-988w: In the Linux kernel, the following vulnerability has been resolved:
tipc: move bc link creation back to tipc_node_create
Shuang Li reported a NULL p
In the Linux kernel, the following vulnerability has been resolved:
tipc: move bc link creation back to tipc_node_create
Shuang Li reported a NULL pointer dereference crash:
[] BUG: kernel NULL pointer dereference, address: 0000000000000068
[] RIP: 0010:tipc_link_is_up+0x5/0x10 [tipc]
[] Call Trace:
[]
[] tipc_bcast_rcv+0xa2/0x190 [tipc]
[] tipc_node_bc_rcv+0x8b/0x200 [tipc]
[] tipc_rcv+0x3af/0x5b0 [tipc]
[] tipc_udp_recv+0xc7/0x1e0 [tipc]
It was caused by the 'l' passed into tipc_bcast_rcv() is NULL. When it
creates a node in tipc_node_check_dest(), after inserting the new node
into hashtable in tipc_node_create(), it creates the bc link. However,
there is a gap between this insert and bc link creation, a bc packet
may come in and get the node from the hashtable then try to dereferenc
OSV
CVE-2022-49664: In the Linux kernel, the following vulnerability has been resolved: tipc: move bc link creation back to tipc_node_create Shuang Li reported a NULL poi
osv·2025-02-26·CVSS 5.5
CVE-2022-49664 [MEDIUM] CVE-2022-49664: In the Linux kernel, the following vulnerability has been resolved: tipc: move bc link creation back to tipc_node_create Shuang Li reported a NULL poi
In the Linux kernel, the following vulnerability has been resolved: tipc: move bc link creation back to tipc_node_create Shuang Li reported a NULL pointer dereference crash: [] BUG: kernel NULL pointer dereference, address: 0000000000000068 [] RIP: 0010:tipc_link_is_up+0x5/0x10 [tipc] [] Call Trace: [] [] tipc_bcast_rcv+0xa2/0x190 [tipc] [] tipc_node_bc_rcv+0x8b/0x200 [tipc] [] tipc_rcv+0x3af/0x5b0 [tipc] [] tipc_udp_recv+0xc7/0x1e0 [tipc] It was caused by the 'l' passed into tipc_bcast_rcv() is NULL. When it creates a node in tipc_node_check_dest(), after inserting the new node into hashtable in tipc_node_create(), it creates the bc link. However, there is a gap between this insert and bc link creation, a bc packet may come in and get the node from the hashtable then try to dereference it
Red Hat
kernel: tipc: move bc link creation back to tipc_node_create
vendor_redhat·2025-02-26·CVSS 5.5
CVE-2022-49664 [MEDIUM] CWE-476 kernel: tipc: move bc link creation back to tipc_node_create
kernel: tipc: move bc link creation back to tipc_node_create
In the Linux kernel, the following vulnerability has been resolved:
tipc: move bc link creation back to tipc_node_create
Shuang Li reported a NULL pointer dereference crash:
[] BUG: kernel NULL pointer dereference, address: 0000000000000068
[] RIP: 0010:tipc_link_is_up+0x5/0x10 [tipc]
[] Call Trace:
[]
[] tipc_bcast_rcv+0xa2/0x190 [tipc]
[] tipc_node_bc_rcv+0x8b/0x200 [tipc]
[] tipc_rcv+0x3af/0x5b0 [tipc]
[] tipc_udp_recv+0xc7/0x1e0 [tipc]
It was caused by the 'l' passed into tipc_bcast_rcv() is NULL. When it
creates a node in tipc_node_check_dest(), after inserting the new node
into hashtable in tipc_node_create(), it creates the bc link. However,
there is a gap between this insert and bc link creation, a bc packet
may come in
Debian
CVE-2022-49664: linux - In the Linux kernel, the following vulnerability has been resolved: tipc: move ...
vendor_debian·2022·CVSS 5.5
CVE-2022-49664 [MEDIUM] CVE-2022-49664: linux - In the Linux kernel, the following vulnerability has been resolved: tipc: move ...
In the Linux kernel, the following vulnerability has been resolved: tipc: move bc link creation back to tipc_node_create Shuang Li reported a NULL pointer dereference crash: [] BUG: kernel NULL pointer dereference, address: 0000000000000068 [] RIP: 0010:tipc_link_is_up+0x5/0x10 [tipc] [] Call Trace: [] [] tipc_bcast_rcv+0xa2/0x190 [tipc] [] tipc_node_bc_rcv+0x8b/0x200 [tipc] [] tipc_rcv+0x3af/0x5b0 [tipc] [] tipc_udp_recv+0xc7/0x1e0 [tipc] It was caused by the 'l' passed into tipc_bcast_rcv() is NULL. When it creates a node in tipc_node_check_dest(), after inserting the new node into hashtable in tipc_node_create(), it creates the bc link. However, there is a gap between this insert and bc link creation, a bc packet may come in and get the node from the hashtable then try to dereference it
No detection rules found.
No public exploits indexed.
2025-02-26
Published