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CVE-2025-21687vfio/platform: check the bounds of read/write syscalls
- 7.8HighCVSS base score
- 0.24%Exploitation in 30 daysEPSS · top 85% 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: vfio/platform: check the bounds of read/write syscalls count and offset are passed from user space and not checked, only offset is capped to 40 bits, which can be used to read/write out of bounds of the device.
Timeline
ID reserved
By Linux
- 43 days later
· 43 days later
Published
- 18 months later
· 18 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 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 | 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)
- 0.24% · top 85% of all CVEs (12 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < f21636f24b6786c8b13f1af4319fa75ffcf17f38
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < 9377cdc118cf327248f1a9dde7b87de067681dc9
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < d19a8650fd3d7aed8d1af1d9a77f979a8430eba1
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < ed81d82bb6e9df3a137f2c343ed689e6c68268ef
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < 92340e6c5122d823ad064984ef7513eba9204048
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < f65ce06387f8c1fb54bd59e18a8428248ec68eaf
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < 6bcb8a5b70b80143db9bf12dfa7d53636f824d53
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < 1485932496a1b025235af8aa1e21988d6b7ccd54
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < c981c32c38af80737a2fedc16e270546d139ccdd
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < a20fcaa230f7472456d12cf761ed13938e320ac3
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < 665cfd1083866f87301bbd232cb8ba48dcf4acce
- affected 6e3f264560099869f68830cb14b3b3e71e5ac76a – < ce9ff21ea89d191e477a02ad7eabf4f996b80a69
- affected 4.1
- unaffected < 4.1
- unaffected 5.4.290 – ≤ 5.4.*
- unaffected 5.4.291 – ≤ 5.4.*
- unaffected 5.10.234 – ≤ 5.10.*
- unaffected 5.10.235 – ≤ 5.10.*
- unaffected 5.15.178 – ≤ 5.15.*
- unaffected 5.15.179 – ≤ 5.15.*
- unaffected 6.1.128 – ≤ 6.1.*
- unaffected 6.1.129 – ≤ 6.1.*
- unaffected 6.6.75 – ≤ 6.6.*
- unaffected 6.12.12 – ≤ 6.12.*
- unaffected 6.13.1 – ≤ 6.13.*
- unaffected 6.14 – ≤ *
References
References14
- https://git.kernel.org/stable/c/f21636f24b6786c8b13f1af4319fa75ffcf17f38 (opens in a new tab)
- https://git.kernel.org/stable/c/9377cdc118cf327248f1a9dde7b87de067681dc9 (opens in a new tab)
- https://git.kernel.org/stable/c/d19a8650fd3d7aed8d1af1d9a77f979a8430eba1 (opens in a new tab)
- https://git.kernel.org/stable/c/ed81d82bb6e9df3a137f2c343ed689e6c68268ef (opens in a new tab)
- https://git.kernel.org/stable/c/92340e6c5122d823ad064984ef7513eba9204048 (opens in a new tab)
- https://git.kernel.org/stable/c/f65ce06387f8c1fb54bd59e18a8428248ec68eaf (opens in a new tab)
- https://git.kernel.org/stable/c/6bcb8a5b70b80143db9bf12dfa7d53636f824d53 (opens in a new tab)
- https://git.kernel.org/stable/c/1485932496a1b025235af8aa1e21988d6b7ccd54 (opens in a new tab)
- https://git.kernel.org/stable/c/c981c32c38af80737a2fedc16e270546d139ccdd (opens in a new tab)
- https://git.kernel.org/stable/c/a20fcaa230f7472456d12cf761ed13938e320ac3 (opens in a new tab)
- https://git.kernel.org/stable/c/665cfd1083866f87301bbd232cb8ba48dcf4acce (opens in a new tab)
- https://git.kernel.org/stable/c/ce9ff21ea89d191e477a02ad7eabf4f996b80a69 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.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-2025-2636 (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-2025-21687)Record last updated .