CVE-2024-39490
- Source
- https://cve.org/CVERecord?id=CVE-2024-39490
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-39490.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-39490
- Downstream
- Related
- Published
- 2024-07-10T07:14:09.667Z
- Modified
- 2026-05-18T05:57:15.309821638Z
- Severity
-
- 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- ipv6: sr: fix missing sk_buff release in seg6_input_core
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ipv6: sr: fix missing skbuff release in seg6input_core
The seg6input() function is responsible for adding the SRH into a packet, delegating the operation to the seg6inputcore(). This function uses the skbcowhead() to ensure that there is sufficient headroom in the skbuff for accommodating the link-layer header. In the event that the skbcowheader() function fails, the seg6inputcore() 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 seg6inputcore() function to release the skbuff in the event that skbcow_head() fails.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39490.json" }- References
-
- https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9
- https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864
- https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a
- https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8
- https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39490.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-39490
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedaf3b5158b89d3bab9be881113417558c71b71ca4Fixede8688218e38111ace457509d8f0cad75f79c1a7aFixed8f1fc3b86eaea70be6abcae2e9aa7e7b99453864Fixedf4df8c7670a73752201cbde215254598efdf6ce8Fixedf5fec1588642e415a3d72e02140160661b303940Fixed5447f9708d9e4c17a647b16a9cb29e9e02820bd9