CVE - CVE-2024-39490

CVE-ID
CVE-2024-39490	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9 URL:https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9 MISC:https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864 URL:https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864 MISC:https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a URL:https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a MISC:https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8 URL:https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8 MISC:https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940 URL:https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940
Assigning CNA
kernel.org
Date Record Created
20240625	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240625)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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