by Kastro
Paper/Archive/CVE-2023-2163

CVE-2023-2163

Linux Linux Kernel — Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation

EPSS 4%CVSS 10.0
critical.is priorityof 100
48
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 89.6.896 × 2017.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.

Affected

ProductAffectedFixed inSource
Linux Kernel< 71b547f561247897a0a14f3082730156c0533fed71b547f561247897a0a14f3082730156c0533fedCNA

Scores by source

Google (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgit.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fedwriteupbughunters.google.com/blog/6303226026131456/a-deep-dive-into-cve-2023-2163-how-we-found-and-fixed-an-ebpf-linux-kernel-vulnerability