🛡️ CVE-2024-50258 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

net: fix crash when config small gso_max_size/gso_ipv4_max_size

In the Linux kernel, the following vulnerability has been resolved:

net: fix crash when config small gso_max_size/gso_ipv4_max_size

Config a small gso_max_size/gso_ipv4_max_size will lead to an underflow

in sk_dst_gso_max_size(), which may trigger a BUG_ON crash,

because sk->sk_gso_max_size would be much bigger than device limits.

Call Trace:

tcp_write_xmit

tso_segs = tcp_init_tso_segs(skb, mss_now);

tcp_set_skb_tso_segs

tcp_skb_pcount_set

// skb->len = 524288, mss_now = 8

// u16 tso_segs = 524288/8 = 65535 -> 0

tso_segs = DIV_ROUND_UP(skb->len, mss_now)

BUG_ON(!tso_segs)

Add check for the minimum value of gso_max_size and gso_ipv4_max_size.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2024-50258 is recorded against 2 packages.

  • kernel (from 6.7.0 up to 6.11.7)
  • linux-kernel

Timeline and source

Published on 9 November 2024 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
lists.debian.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-50258 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-11-09
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.7.0 6.11.7
linux-kernel — —

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