PT-2024-27025 · Linux+10 · Linux Kernel+10
Dae R. Jeong
+1
·
Published
2024-05-21
·
Updated
2025-09-29
·
CVE-2024-36489
CVSS v2.0
7.5
High
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A missing memory barrier in the
tls init function can cause a NULL dereference in tls {setsockopt,getsockopt} due to store-store reordering. This issue can be observed when the ctx->sk proto is initialized and the sk->sk prot is updated concurrently. The problem arises when the READ ONCE and WRITE ONCE operations are reordered, allowing the ctx->sk proto->setsockopt() function to access a NULL value. To fix this issue, the rcu assign pointer function is used to ensure that the ctx->sk proto is visible when changing the sk->sk prot.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu