CVE-2025-38702fbdev: fix potential buffer overflow in do_register_framebuffer()
- 7.8HighCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: fix potential buffer overflow in do_register_framebuffer() The current implementation may lead to buffer overflow when: 1. Unregistration creates NULL gaps in registered_fb[] 2. All array slots become occupied despite num_registered_fb < FB_MAX 3. The registration loop exceeds array bounds Add boundary check to prevent registered_fb[FB_MAX] access.
Timeline
ID reserved
By Linux
- 5 months later
· 5 months later
Published
- 14 months later
· 14 months 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 |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 5c3f5a25c62230b7965804ce7a2e9305c3ca3961
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < cbe740de32bb0fb7a5213731ff5f26ea6718fca3
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 806f85bdd3a60187c21437fc51baace11f659f35
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 2828a433c7d7a05b6f27c8148502095101dd0b09
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 248b2aab9b2af5ecf89d9d7955a2ff20c4b4a399
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 523b84dc7ccea9c4d79126d6ed1cf9033cf83b05
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 6.1.149 – ≤ 6.1.*
- unaffected 6.6.103 – ≤ 6.6.*
- unaffected 6.12.43 – ≤ 6.12.*
- unaffected 6.15.11 – ≤ 6.15.*
- unaffected 6.16.2 – ≤ 6.16.*
- unaffected 6.17 – ≤ *
References
References9
- https://git.kernel.org/stable/c/5c3f5a25c62230b7965804ce7a2e9305c3ca3961 (opens in a new tab)
- https://git.kernel.org/stable/c/cbe740de32bb0fb7a5213731ff5f26ea6718fca3 (opens in a new tab)
- https://git.kernel.org/stable/c/806f85bdd3a60187c21437fc51baace11f659f35 (opens in a new tab)
- https://git.kernel.org/stable/c/2828a433c7d7a05b6f27c8148502095101dd0b09 (opens in a new tab)
- https://git.kernel.org/stable/c/248b2aab9b2af5ecf89d9d7955a2ff20c4b4a399 (opens in a new tab)
- https://git.kernel.org/stable/c/523b84dc7ccea9c4d79126d6ed1cf9033cf83b05 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html (opens in a new tab)
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-2025-26767 (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-2025-38702)Record last updated .