| Summary: |
VUL-0: CVE-2024-40931: kernel: mptcp: ensure snd_una is properly initialized on connect |
| Product: |
[Novell Products] SUSE Security Incidents
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Reporter: |
SMASH SMASH <smash_bz> |
| Component: |
Incidents | Assignee: |
Security Team bot <security-team> |
| Status: |
NEW
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QA Contact: |
Security Team bot <security-team> |
| Severity: |
Normal
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| Priority: |
P3 - Medium
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CC: |
andrea.mattiazzo, davide.benini, denis.kirjanov, mhocko, miroslav.franc, mkubecek
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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/413858/
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| Whiteboard: |
CVSSv3.1:SUSE:CVE-2024-40931:5.3:(AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/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: mptcp: ensure snd_una is properly initialized on connect This is strictly related to commit fb7a0d334894 ("mptcp: ensure snd_nxt is properly initialized on connect"). It turns out that syzkaller can trigger the retransmit after fallback and before processing any other incoming packet - so that snd_una is still left uninitialized. Address the issue explicitly initializing snd_una together with snd_nxt and write_seq. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-40931 https://www.cve.org/CVERecord?id=CVE-2024-40931 https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726 https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813 https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-40931.mbox