Use After Free in Linux Kernel
CVE-2023-2598
A flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.014 (71.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Linux Kernel
- NetApp Hci Baseboard Management Controller — versions h300s, h410c, h410s
- Kernel — versions Kernel prior to 6.4-rc1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2023/05/08/3 (Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20230703-0006/ (Third Party Advisory)
- www.openwall.com/lists/oss-security/2024/04/24/3 (mailing-list)
Frequently asked questions
- What is CVE-2023-2598?
- CVE-2023-2598 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-06-01.
- How severe is CVE-2023-2598?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-2598 known to be exploited?
- 26 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.