CVE-2023-3777

CWE-416 — Use After Free20 documents8 sources
Severity
7.8HIGH
EPSS
0.1%
top 81.44%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Linux KernelLinux Linux KernelCanonical Ubuntu Linux+1 more
Timeline
PublishedSep 6
Latest updateNov 28

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances. We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages3 packages

▶CVEListV5linux/kernel5.9 — 6.5
▶NVDlinux/linux_kernel5.9 — 5.10.188+3
▶Debianlinux< 5.10.191-1+3

Also affects: Debian Linux 12.0, Ubuntu Linux 14.04, 16.04, 18.04, 20.04, 22.04

Patches

Patch: git.kernel.org ↗Patch: kernel.dance ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

4
GHSA
GHSA-3v7f-rjgx-9grq: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation↗2023-09-06
▶
OSV
CVE-2023-3777: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation↗2023-09-06
▶
CVEList
Use-after-free in Linux kernel's netfilter: nf_tables component↗2023-09-06
▶
OSV
linux-oem-6.1 vulnerabilities↗2023-08-29
▶

📋Vendor Advisories

15
Ubuntu
Kernel Live Patch Security Notice↗2023-11-28
▶
Ubuntu
Kernel Live Patch Security Notice↗2023-10-10
▶
Chrome
Long Term Support Channel Update for ChromeOS: CVE-2023-3777↗2023-10-06
▶
Ubuntu
Linux kernel (OEM) vulnerabilities↗2023-09-19
▶
Red Hat
kernel: use-after-free in netfilter: nf_tables↗2023-09-06
▶