1. Home
  2. Vulnerabilities
  3. CVE-2023-3609

CVE-2023-3609

CVSS v3.1 7.8 (High)
78% Progress
EPSS 0.04 % (5th)
0.04% Progress
Affected Products 2
Advisories 64
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software Tools, Exploits & PoC Graph Web & Social Timeline

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.

If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.

We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

Weaknesses
CWE-416
Use After Free
CVE Status
PUBLISHED
CNA
Google Inc.
Published Date
2023-07-21 21:15:11
(14 months ago)
Updated Date
2024-01-11 19:15:10
(8 months ago)

Affected Products

Debian

Linux

Configuration #1

    CPE23 From Up To
  Linux Kernel from 4.14 version and prior 6.4 version cpe:2.3:o:linux:linux_kernel >= 4.14 < 6.4
  Linux Kernel 6.4 Rc1 cpe:2.3:o:linux:linux_kernel:6.4:rc1
  Linux Kernel 6.4 Rc2 cpe:2.3:o:linux:linux_kernel:6.4:rc2
  Linux Kernel 6.4 Rc3 cpe:2.3:o:linux:linux_kernel:6.4:rc3
  Linux Kernel 6.4 Rc4 cpe:2.3:o:linux:linux_kernel:6.4:rc4
  Linux Kernel 6.4 Rc5 cpe:2.3:o:linux:linux_kernel:6.4:rc5
  Linux Kernel 6.4 Rc6 cpe:2.3:o:linux:linux_kernel:6.4:rc6

Configuration #2

    CPE23 From Up To
  Debian Linux 10.0 cpe:2.3:o:debian:debian_linux:10.0
  Debian Linux 11.0 cpe:2.3:o:debian:debian_linux:11.0