CVE-2024-40931 Affecting kernel-zfcpdump package, versions <6.4.0-150600.23.17.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-SLES156-KERNELZFCPDUMP-7649488
  • published8 Aug 2024
  • disclosed7 Aug 2024

Introduced: 7 Aug 2024

CVE-2024-40931  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 kernel-zfcpdump to version 6.4.0-150600.23.17.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-zfcpdump package and not the kernel-zfcpdump package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

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.

CVSS Scores

version 3.1