CVE-2024-44986: ipv6: fix possible UAF in ip6_finish_output2()
In the Linux kernel, the following vulnerability has been resolved:
ipv6: fix possible UAF in ip6finishoutput2()
If skbexpandhead() returns NULL, skb has been freed and associated dst/idev could also have been freed.
We need to hold rcureadlock() to make sure the dst and associated idev are alive.
Other sources
This CVE was automatically created from a reference found in an email or other text. If you are reading this, then this CVE entry is probably erroneous, since this text should be replaced by the official CVE description automatically.
— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1 - Upgrade
Upgrade
debian/linux-6.1to a version that resolves this vulnerability.Fixed in 6.1.129-1~deb11u1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-44986?
The severity of CVE-2024-44986 is classified as high due to potential use-after-free vulnerabilities in the Linux kernel.
How do I fix CVE-2024-44986?
To fix CVE-2024-44986, update your Linux kernel to a version that has patched the vulnerability, such as 6.1.123-1 or later.
Which Linux kernel versions are affected by CVE-2024-44986?
CVE-2024-44986 affects Linux kernel versions between 5.14 and 6.11-rc4.
What type of vulnerability is CVE-2024-44986?
CVE-2024-44986 is a use-after-free vulnerability specifically in the IPv6 networking portion of the Linux kernel.
Is CVE-2024-44986 specific to any Linux distributions?
CVE-2024-44986 can affect any distribution using the vulnerable Linux kernel versions, including Debian and its derivatives.