PT-2024-5944 · Linux+6 · Linux Kernel+6
Eric Dumazet
·
Published
2024-08-21
·
Updated
2025-09-29
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CVE-2024-44985
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.6.50
Description
The issue is related to a possible use-after-free (UAF) vulnerability in the
ip6 xmit() function of the Linux kernel. If skb expand head() returns NULL, it indicates that the skb has been freed, and the associated dst/idev could also have been freed. To prevent a possible UAF, it is necessary to use rcu read lock(). The exploitation of this vulnerability may allow an attacker to cause a denial of service.Recommendations
To resolve the issue, update the Linux kernel to version 6.6.50 or later.
As a temporary workaround, consider using
rcu read lock() to prevent a possible UAF in the ip6 xmit() function until a patch is available.Exploit
Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu