| Summary: |
VUL-0: CVE-2024-39490: kernel: ipv6: sr: fix missing sk_buff release in seg6_input_core |
| Product: |
[Novell Products] SUSE Security Incidents
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Reporter: |
SMASH SMASH <smash_bz> |
| Component: |
Incidents | Assignee: |
Karasulli <vasant.karasulli> |
| Status: |
NEW
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QA Contact: |
Security Team bot <security-team> |
| Severity: |
Normal
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| Priority: |
P4 - Low
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CC: |
andrea.mattiazzo, davide.benini, mkoutny, vasant.karasulli
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| Version: |
unspecified | |
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| Target Milestone: |
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| Hardware: |
Other | |
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| OS: |
Other | |
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| URL: |
https://smash.suse.de/issue/413562/
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| Whiteboard: |
CVSSv3.1:SUSE:CVE-2024-39490:3.3:(AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) |
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Found By:
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Security Response Team
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Services Priority:
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Business Priority:
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Blocker:
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Marketing QA Status:
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IT Deployment:
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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: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39490 https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-39490.mbox 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 https://www.cve.org/CVERecord?id=CVE-2024-39490 https://bugzilla.redhat.com/show_bug.cgi?id=2297060