Vulnerability in Linux Kernel
CVE-2023-2008
A flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Linux Kernel — versions 4.20, 5.5, 5.11
- Linux Kernel — versions 5.19
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-162.6.1.el9_1, 0:5.14.0-162.6.1.rt21.168.el9_1
- Red Hat Enterprise Linux 9.0 Extended Update Support — versions 0:5.14.0-70.58.1.el9_0, 0:5.14.0-70.58.1.rt21.129.el9_0
- Linux Kernel Udmabuf Device Driver — versions Fixed in kernel v5.19-rc4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- af854a3a-2127-422b-91ae-364da2661108 (Patch)
- www.zerodayinitiative.com/advisories/ZDI-23-441/ (VDB Entry, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
- access.redhat.com/errata/RHSA-2022:7933 (vendor-advisory)
- access.redhat.com/errata/RHSA-2022:8267 (vendor-advisory)
- access.redhat.com/errata/RHSA-2023:3465 (vendor-advisory)
- access.redhat.com/errata/RHSA-2023:3470 (vendor-advisory)
- access.redhat.com/errata/RHSA-2023:3490 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-2008 (vdb-entry)
Frequently asked questions
- What is CVE-2023-2008?
- CVE-2023-2008 is a high-severity vulnerability in Linux Kernel, classified under Improper Validation of Array Index. CVSS score: 8.2/10. Published 2023-04-14.
- How severe is CVE-2023-2008?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2023-2008 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.