PT-2024-34089 · Linux+11 · Linux Kernel+11
Syzbot
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Published
2024-10-25
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Updated
2026-03-14
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CVE-2024-50256
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 versions prior to 6.6.61
Description:
A potential crash in the
nf send reset6() function has been resolved. The issue occurs when dev->hard header len is zero, and an attempt is made to push an Ethernet header. The fix involves using LL MAX HEADER as in other functions in net/ipv6/netfilter/nf reject ipv6.c. A syzbot report was received without a repro, crashing in nf send reset6(). The crash is related to the skb under panic and skb panic functions in net/core/skbuff.c.Recommendations:
To resolve the issue, update the Linux kernel to version 6.6.61 or later. As a temporary workaround, consider disabling the
nf send reset6() function until a patch is available. Restrict access to the vulnerable net/ipv6/netfilter/nf reject ipv6.c module to minimize the risk of exploitation. Avoid using the dev->hard header len variable in the affected API endpoints until the issue is resolved.Exploit
Fix
Improper Resource Release
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Debian
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu