Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected af3b5158b89d3bab9be881113417558c71b71ca4 before e8688218e38111ace457509d8f0cad75f79c1a7a; affected af3b5158b89d3bab9be881113417558c71b71ca4 before 8f1fc3b86eaea70be6abcae2e9aa7e7b99453864; affected af3b5158b89d3bab9be881113417558c71b71ca4 before f4df8c7670a73752201cbde215254598efdf6ce8; affected af3b5158b89d3bab9be881113417558c71b71ca4 before f5fec1588642e415a3d72e02140160661b303940; affected af3b5158b89d3bab9be881113417558c71b71ca4 before 5447f9708d9e4c17a647b16a9cb29e9e02820bd9 |
| Linux / Linux | affected 4.12; unaffected 0 before 4.12; unaffected 5.15.161 through 5.15.*; unaffected 6.1.93 through 6.1.*; unaffected 6.6.33 through 6.6.*; unaffected 6.9.4 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a
- https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864
- https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8
- https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940
- https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a
- https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864
- https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8
- https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940
- https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9