CVE-2022-48691
netfilter: nf_tables: clean up hook list when offload flags check fails
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: clean up hook list when offload flags check fails
splice back the hook list so nft_chain_release_hook() has a chance to
release the hooks.
BUG: memory leak
unreferenced object 0xffff88810180b100 (size 96):
comm "syz-executor133", pid 3619, jiffies 4294945714 (age 12.690s)
hex dump (first 32 bytes):
28 64 23 02 81 88 ff ff 28 64 23 02 81 88 ff ff (d#.....(d#.....
90 a8 aa 83 ff ff ff ff 00 00 b5 0f 81 88 ff ff ................
backtrace:
[<ffffffff83a8c59b>] kmalloc include/linux/slab.h:600 [inline]
[<ffffffff83a8c59b>] nft_netdev_hook_alloc+0x3b/0xc0 net/netfilter/nf_tables_api.c:1901
[<ffffffff83a9239a>] nft_chain_parse_netdev net/netfilter/nf_tables_api.c:1998 [inline]
[<ffffffff83a9239a>] nft_chain_parse_hook+0x33a/0x530 net/netfilter/nf_tables_api.c:2073
[<ffffffff83a9b14b>] nf_tables_addchain.constprop.0+0x10b/0x950 net/netfilter/nf_tables_api.c:2218
[<ffffffff83a9c41b>] nf_tables_newchain+0xa8b/0xc60 net/netfilter/nf_tables_api.c:2593
[<ffffffff83a3d6a6>] nfnetlink_rcv_batch+0xa46/0xd20 net/netfilter/nfnetlink.c:517
[<ffffffff83a3db79>] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:638 [inline]
[<ffffffff83a3db79>] nfnetlink_rcv+0x1f9/0x220 net/netfilter/nfnetlink.c:656
[<ffffffff83a13b17>] netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
[<ffffffff83a13b17>] netlink_unicast+0x397/0x4c0 net/netlink/af_netlink.c:1345
[<ffffffff83a13fd6>] netlink_sendmsg+0x396/0x710 net/netlink/af_netlink.c:1921
[<ffffffff83865ab6>] sock_sendmsg_nosec net/socket.c:714 [inline]
[<ffffffff83865ab6>] sock_sendmsg+0x56/0x80 net/socket.c:734
[<ffffffff8386601c>] ____sys_sendmsg+0x36c/0x390 net/socket.c:2482
[<ffffffff8386a918>] ___sys_sendmsg+0xa8/0x110 net/socket.c:2536
[<ffffffff8386aaa8>] __sys_sendmsg+0x88/0x100 net/socket.c:2565
[<ffffffff845e5955>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<ffffffff845e5955>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
[<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nf_tables: limpia la lista de ganchos cuando falla la verificación de indicadores de descarga, vuelve a unir la lista de ganchos para que nft_chain_release_hook() tenga la oportunidad de liberar los ganchos. ERROR: pérdida de memoria objeto sin referencia 0xffff88810180b100 (tamaño 96): comunicación "syz-executor133", pid 3619, jiffies 4294945714 (edad 12.690 s) volcado hexadecimal (primeros 32 bytes): 28 64 23 02 81 88 ff ff 28 64 02 81 88 ff ff (d#.....(d#..... 90 a8 aa 83 ff ff ff ff 00 00 b5 0f 81 88 ff ff ................ retroceso : [] kmalloc include/linux/slab.h:600 [en línea] [] nft_netdev_hook_alloc+0x3b/0xc0 net/netfilter/nf_tables_api.c:1901 [] netdev net/netfilter/nf_tables_api. c:1998 [en línea] [] nft_chain_parse_hook+0x33a/0x530 net/netfilter/nf_tables_api.c:2073 [] nf_tables_addchain.constprop.0+0x10b/0x950 f_tables_api.c:2218 [< ffffffff83a9c41b>] nf_tables_newchain+0xa8b/0xc60 net/netfilter/nf_tables_api.c:2593 [] nfnetlink_rcv_batch+0xa46/0xd20 net/netfilter/nfnetlink.c:517 [] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c: 638 [en línea] [] nfnetlink_rcv+0x1f9/0x220 net/netfilter/nfnetlink.c:656 [] netlink_unicast_kernel net/netlink/af_netlink.c:1319 [en línea] [] emitir+0x397/ 0x4c0 net/netlink/af_netlink.c:1345 [] netlink_sendmsg+0x396/0x710 net/netlink/af_netlink.c:1921 [] sock_sendmsg_nosec net/socket.c:714 [en línea] 65ab6>] sock_sendmsg+0x56/0x80 net/socket.c:734 [] ____sys_sendmsg+0x36c/0x390 net/socket.c:2482 [] ___sys_sendmsg+0xa8/0x110 36 [ ] __sys_sendmsg+0x88/0x100 net/socket.c:2565 [] do_syscall_x64 arch/x86/entry/common.c:50 [en línea] [] do_syscall_64+0x35/0xb0 arch/x86/ent ry/común .c:80 [] entrada_SYSCALL_64_after_hwframe+0x63/0xcd
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-03 CVE Reserved
- 2024-05-03 CVE Published
- 2024-05-24 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-401: Missing Release of Memory after Effective Lifetime
CAPEC
References (5)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/d54725cd11a57c30f650260cfb0a92c268bdc3e0 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.10.143 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.143" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.15.68 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.15.68" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.19.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.19.9" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.0 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.0" | en |
Affected
| ||||||