CVE-2023-2008
Kernel: udmabuf: improper validation of array index leading to local privilege escalation
- 8.2HighCVSS base score
- 1.0%Exploitation in 30 daysEPSS · top 37% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By redhat
- 2 days later
· 2 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High8.2 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.2 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.0% · top 37% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.2.
Affected products
- affected 4.20 – < 5.4.202
- affected 5.5 – < 5.10.127
- affected 5.11 – < 5.15.51
- affected 5.16 – < 5.18.8
- unaffected 5.19
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-162.6.1.el9_1 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-162.6.1.rt21.168.el9_1 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-162.6.1.el9_1 – < *
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support
- unaffected 0:5.14.0-70.58.1.el9_0 – < *
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support
- unaffected 0:5.14.0-70.58.1.rt21.129.el9_0 – < *
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 6
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 8
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 8
All versions: unaffected
References
10
- RHSA-2022:7933 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2022:8267 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2023:3465 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2023:3470 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2023:3490 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-2008 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2186862 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-23-441/ (opens in a new tab)x_transferred
- https://github.com/torvalds/linux/commit/05b252cccb2e5c3f56119d25de684b4f810ba4 (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20230517-0007/ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-33538 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-2008)Record last updated .