Fixed
Created: Jul 10, 2024
Updated: Jul 12, 2024
Resolved Date: Jul 10, 2024
Found In Version: 10.23.30.1
Fix Version: 10.23.30.12
Severity: Standard
Applicable for: Wind River Linux LTS 23
Component/s: Kernel
In the Linux kernel, the following vulnerability has been resolved:
ipv6: sr: fix missing sk_buff release in seg6_input_core
The seg6_input() function is responsible for adding the SRH into a
packet, delegating the operation to the seg6_input_core(). This function
uses the skb_cow_head() to ensure that there is sufficient headroom in
the sk_buff for accommodating the link-layer header.
In the event that the skb_cow_header() function fails, the
seg6_input_core() catches the error but it does not release the sk_buff,
which will result in a memory leak.
This issue was introduced in commit af3b5158b89d ("ipv6: sr: fix BUG due
to headroom too small after SRH push") and persists even after commit
7a3f5b0de364 ("netfilter: add netfilter hooks to SRv6 data plane"),
where the entire seg6_input() code was refactored to deal with netfilter
hooks.
The proposed patch addresses the identified memory leak by requiring the
seg6_input_core() function to release the sk_buff in the event that
skb_cow_head() fails.
CREATE(Triage):(User=admin) CVE-2024-39490 (https://nvd.nist.gov/vuln/detail/CVE-2024-39490)
