What’s Vulnerable › Vulnerabilities

CVE-2024-42280: mISDN: Fix a use after free in hfcmulti_tx()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-17 · updated 2026-08-04
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: mISDN: Fix a use after free in hfcmulti_tx() Don't dereference *sp after calling dev_kfree_skb(*sp).

Affected products

• Linux kernel: from 2.6.27 before 4.19.320; from 4.20 before 5.4.282; from 5.5 before 5.10.224; from 5.11 before 5.15.165; from 5.16 before 6.1.103; from 6.2 before 6.6.44 — fixed in 4.19.320, 5.10.224, 5.15.165, 5.4.282, 6.1.103, 6.10.3

How to fix

Upgrade to a fixed version: Linux kernel 4.19.320, 5.10.224, 5.15.165, 5.4.282. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/4d8b642985ae24f4b3656438eb8489834a17bb80
• https://git.kernel.org/stable/c/61ab751451f5ebd0b98e02276a44e23a10110402
• https://git.kernel.org/stable/c/70db2c84631f50e02e6b32b543700699dd395803
• https://git.kernel.org/stable/c/7e4a539bca7d8d20f2c5d93c18cce8ef77cd78e0
• https://git.kernel.org/stable/c/8f4030277dfb9dbe04fd78566b19931097c9d629
• https://git.kernel.org/stable/c/9460ac3dd1ae033bc2b021a458fb535a0c36ddb2
• https://git.kernel.org/stable/c/d3e4d4a98c5629ccdcb762a0ff6c82ba9738a0c3
• https://git.kernel.org/stable/c/ddc79556641ee070d36be0de4a1f0a16a71f1fc7
• https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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