CVE-2024-36971

Updated: 2025-01-28 01:04:46.412829

Description:

In the Linux kernel, the following vulnerability has been resolved: net: fix __dst_negative_advice() race __dst_negative_advice() does not enforce proper RCU rules when sk->dst_cache must be cleared, leading to possible UAF. RCU rules are that we must first clear sk->sk_dst_cache, then call dst_release(old_dst). Note that sk_dst_reset(sk) is implementing this protocol correctly, while __dst_negative_advice() uses the wrong order. Given that ip6_negative_advice() has special logic against RTF_CACHE, this means each of the three ->negative_advice() existing methods must perform the sk_dst_reset() themselves. Note the check against NULL dst is centralized in __dst_negative_advice(), there is no need to duplicate it in various callbacks. Many thanks to Clement Lecigne for tracking this issue. This old bug became visible after the blamed commit, using UDP sockets.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x HIGH 7.8

Known exploits

Added Date Description Due Date Notes
2024-08-07 Android contains an unspecified vulnerability in the kernel that allows for remote code execution. This vulnerability resides in Linux Kernel and could impact other products, including but not limited to Android OS. 2024-08-28 This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://source.android.com/docs/security/bulletin/2024-08-01, https://lore.kernel.org/linux-cve-announce/20240610090330.1347021-2-lee@kernel.org/T/#u ; https://nvd.nist.gov/vuln/detail/CVE-2024-36971

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

AlmaLinux 9.2 ESU kernel 5.14.0 7.8 HIGH Released CLSA-2024:1725293298 2024-09-02 12:19:57
AlmaLinux 9.2 FIPS kernel 5.14.0 7.8 HIGH Released CLSA-2024:1725304408 2024-09-02 17:30:47
CentOS 6 ELS kernel 2.6.32 7.8 HIGH Not Vulnerable 2024-08-22 12:17:09
CentOS 7 ELS kernel 3.10.0 7.8 HIGH Released CLSA-2024:1725882897 2024-09-20 03:43:19
CentOS 8.4 ELS kernel 4.18.0 7.8 HIGH Released CLSA-2024:1722977546 2024-08-06 17:33:26
CentOS 8.5 ELS kernel 4.18.0 7.8 HIGH Released CLSA-2024:1722977984 2024-08-06 17:33:26
CentOS Stream 8 ELS kernel 4.18.0 7.8 HIGH Released 2024-11-11 04:54:16
CloudLinux 6 ELS kernel 2.6.32 7.8 HIGH Not Vulnerable 2024-08-22 12:17:09
CloudLinux 7 ELS kernel 3.10.0 7.8 HIGH In Testing 2024-10-22 10:59:15
Oracle Linux 6 ELS kernel 2.6.32 7.8 HIGH Not Vulnerable 2024-08-22 12:17:09
Total: 14