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CVE-2022-49017

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: tipc: re-fetch skb cb after tipc_msg_validate As the call trace shows, the original skb was freed in tipc_msg_validate(), and d…

Published Oct 21, 2024CWE-416EPSS 0.64%

Overview

CVE-2022-49017 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

tipc: re-fetch skb cb after tipc_msg_validate

As the call trace shows, the original skb was freed in tipc_msg_validate(),

and dereferencing the old skb cb would cause an use-after-free crash.

BUG: KASAN: use-after-free in tipc_crypto_rcv_complete+0x1835/0x2240 [tipc]

Call Trace:

<IRQ>

tipc_crypto_rcv_complete+0x1835/0x2240 [tipc]

tipc_crypto_rcv+0xd32/0x1ec0 [tipc]

tipc_rcv+0x744/0x1150 [tipc]

...

Allocated by task 47078:

kmem_cache_alloc_node+0x158/0x4d0

__alloc_skb+0x1c1/0x270

tipc_buf_acquire+0x1e/0xe0 [tipc]

tipc_msg_create+0x33/0x1c0 [tipc]

tipc_link_build_proto_msg+0x38a/0x2100 [tipc]

tipc_link_timeout+0x8b8/0xef0 [tipc]

tipc_node_timeout+0x2a1/0x960 [tipc]

call_timer_fn+0x2d/0x1c0

...

Freed by task 47078:

tipc_msg_validate+0x7b/0x440 [tipc]

tipc_crypto_rcv_complete+0x4b5/0x2240 [tipc]

tipc_crypto_rcv+0xd32/0x1ec0 [tipc]

tipc_rcv+0x744/0x1150 [tipc]

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/1daec0815655e110c6f206c5e777a4af8168ff58Refgit.kernel.org/stable/c/3067bc61fcfe3081bf4807ce65560f499e895e77Refgit.kernel.org/stable/c/a1ba595e35aa3afbe417ff0af353afb9f65559c0Refgit.kernel.org/stable/c/e128190adb2edfd5042105b5d1ed4553f295f5ef

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49017?

CVE-2022-49017 is a high-severity vulnerability. It was published on October 21, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2022-49017?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49017?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49017?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49017 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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