PT-2025-54035 · Linux+2 · Linux Kernel+2

Published 2025-12-30 · Updated 2025-12-31 · CVE-2023-54206

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.3.0-rc4+

Description The Linux kernel contained a flaw in the networking scheduler's flower component related to filter IDR initialization. A commit moved the IDR initialization too early, potentially allowing concurrent access to a filter that was still being initialized, leading to an inconsistent state and a possible NULL pointer dereference. This issue could result in a general protection fault, as indicated by KASAN reports. The vulnerability occurs during the dumping of keys, specifically within the fl dump key function.

Recommendations Update to a version newer than 6.3.0-rc4+ to address this issue.

Exploit

Related Identifiers

CVE-2023-54206

RHSA-2023:6583

RHSA-2023:7077

Affected Products

Centos

Linux Kernel

Red Hat

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54206.json · Exploit
• https://osv.dev/vulnerability/CVE-2023-54206 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-54206 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-54206 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-54206 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-54206 · Security Note
• https://ubuntu.com/security/CVE-2023-54206 · Vendor Advisory
• https://git.kernel.org/stable/c/253a3a324e0ebc2825de76a0f5f17b8383b2023d · Note
• https://twitter.com/CVEnew/status/2006132985565753639 · Twitter Post
• https://git.kernel.org/stable/c/dd4f6bbfa646f258e5bcdfac57a5c413d687f588 · Note
• https://docs.bell-sw.com/security/cves/CVE-2023-54206 · Note
• https://git.kernel.org/linus/dd4f6bbfa646f258e5bcdfac57a5c413d687f588 · Note
• https://lore.kernel.org/linux-cve-announce/2025123022-CVE-2023-54206-1057@gregkh/T · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note