CVE-2024-40931
Last modified
CVE-2024-40931 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 5.9, < 5.10.221 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.162 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.95 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.35 | — |
| Linux | Linux Kernel | >= 6.7, < 6.9.6 | — |
| Linux | Linux Kernel | 6.10 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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