PT-2024-7713 · Linux+9 · Linux Kernel+9
Published
2024-02-01
·
Updated
2025-09-29
·
CVE-2024-26826
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to the MPTCP (Multipath TCP) component in the Linux kernel. When the MPTCP PM detects that a subflow is stale, the packet scheduler must re-inject all the mptcp-level unacked data. However, the check for unacked data in the RTX queue is currently broken, as it uses a TCP-specific helper on an MPTCP socket. This issue was exposed by a recent unrelated TCP change, which reorganized the tcp sock fast path variables. The problem can be fixed by dropping the bogus call, as the code is on a slow path and the early optimization proved to be flawed.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Improper Locking
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu