CVE-2023-6111 — Use After Free in Kernel

CWE-416 — Use After Free9 documents9 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 95.06%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Linux KernelLinux Kernel
Timeline
PublishedNov 14
Latest updateJan 10

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.

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/kernel6.6 — 6.7
▶NVDlinux/linux_kernel5.15.134 — 5.15.140+3
▶Debianlinux/linux_kernel< 6.1.64-1+2

Patches

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

🔴Vulnerability Details

3
CVEList
Use-after-free in Linux kernel's netfilter: nf_tables component↗2023-11-14
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OSV
CVE-2023-6111: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation↗2023-11-14
▶
GHSA
GHSA-xgr2-4f4q-m3p9: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation↗2023-11-14
▶

📋Vendor Advisories

4
Ubuntu
Linux kernel (OEM) vulnerability↗2024-01-10
▶
Microsoft
Use-after-free in Linux kernel's netfilter: nf_tables component↗2023-11-14
▶
Red Hat
kernel: netfilter: use-after-free when removing catchall element in GC sync path↗2023-11-14
▶
Debian
CVE-2023-6111: linux - A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables compon...↗2023
▶

💬Community

1
Bugzilla
CVE-2023-6111 kernel: netfilter: use-after-free when removing catchall element in GC sync path↗2023-11-16
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CVE-2023-6111 — Use After Free in Linux Kernel | cvebase