CVE-2024-40931 (GCVE-0-2024-40931)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:25 – Updated: 2025-11-03 21:57
VLAI?
Title
mptcp: ensure snd_una is properly initialized on connect
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8fd738049ac3d67a937d36577763b47180aae1ad , < 208cd22ef5e57f82d38ec11c1a1703f9401d6dde (git)
Affected: 8fd738049ac3d67a937d36577763b47180aae1ad , < 7b9c7fc8600b64a86e4b47b2d190bba380267726 (git)
Affected: 8fd738049ac3d67a937d36577763b47180aae1ad , < f03c46eabb3a67bd2993e237ab5517f00a5f1813 (git)
Affected: 8fd738049ac3d67a937d36577763b47180aae1ad , < f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f (git)
Affected: 8fd738049ac3d67a937d36577763b47180aae1ad , < ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce (git)
Affected: 8fd738049ac3d67a937d36577763b47180aae1ad , < 8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 (git)
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    Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.10.221 , ≤ 5.10.* (semver)
Unaffected: 5.15.162 , ≤ 5.15.* (semver)
Unaffected: 6.1.95 , ≤ 6.1.* (semver)
Unaffected: 6.6.35 , ≤ 6.6.* (semver)
Unaffected: 6.9.6 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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