What is CVE-2022-48691?

CVE-2022-48691 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 5.5 onward and patched in 5.10.143, 5.15.68, 5.19.9 and others. CVE-2022-48691 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48691?

CVE-2022-48691 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-48691?

Yes, CVE-2022-48691 has been patched. Fixed versions include 5.10.143, 5.15.68, 5.19.9 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-48691 actively exploited?

CVE-2022-48691 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2022-48691

Medium

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

Package Linux Kernel

Published 2024-05-03

Last modified 2024-11-21

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-401

CVE-2022-48691 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.5 and later are affected. Fixed in 5.10.143, 5.15.68, 5.19.9, 6.0 and their respective stable series.

Affected from

≥ 5.5

Fixed in

✓ 5.10.143 5.10.x ✓ 5.15.68 5.15.x ✓ 5.19.9 5.19.x ✓ 6.0

References

4 total

Kernel Git
https://git.kernel.org/stable/c/1ce55ec5cb7c573c983dffbe290b8d17caf1f157

Patch
Kernel Git
https://git.kernel.org/stable/c/77972a36ecc4db7fc7c68f0e80714263c5f03f65

Patch
Kernel Git
https://git.kernel.org/stable/c/910891a2a44cdc49efcc4fe7459c1085ba00d0f4

Patch
Kernel Git
https://git.kernel.org/stable/c/94ed8eeb8d9aeb00e4f4e19b83a2e28b6442fbc5

Patch

Details

CVE ID CVE-2022-48691

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-03

Modified 2024-11-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-48691?

CVE-2022-48691 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 5.5 onward and has been patched in 5.10.143, 5.15.68, 5.19.9 and others. CVE-2022-48691 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48691?

CVE-2022-48691 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-48691?

Yes. CVE-2022-48691 has been patched. Fixed versions include 5.10.143, 5.15.68, 5.19.9 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-48691 actively exploited?

No. CVE-2022-48691 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.