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Vulnerability · Published Nov 14, 2023 · Assigned by Google

CVE-2023-6111Use-after-free in Linux kernel's netfilter: nf_tables component

High 7.8

In plain English

A high-severity use-after-free in Kernel from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 75.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The function nft_trans_gc_catchall did not remove the catchall set element from the catchall_list when the argument sync is true, making it possible to free a catchall set element many times. We recommend upgrading past commit 93995bf4af2c5a99e2a87f0cd5ce547d31eb7630.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.64-1DEBIAN-CVE-2023-6111
Debian:13linux6.5.13-1DEBIAN-CVE-2023-6111
Debian:14linux6.5.13-1DEBIAN-CVE-2023-6111
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1028.28USN-6576-1
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1028.28UBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-6111
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-6111

Affected products (as reported)

VendorProductVersions
Linux Kernel 6.6 – before 6.7

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References