CVE-2025-38530comedi: pcl812: Fix bit shift out of bounds
- 7.1HighCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 91% 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: comedi: pcl812: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: if ((1 << it->options[1]) & board->irq_bits) { However, `it->options[i]` is an unchecked `int` value from userspace, so the shift amount could be negative or out of bounds. Fix the test by requiring `it->options[1]` to be within bounds before proceeding with the original test. Valid `it->options[1]` values that select the IRQ will be in the range [1,15]. The value 0 explicitly disables the use of interrupts.
Timeline
ID reserved
By Linux
- 4 months later
· 4 months later
Published
- 9 months later
· 9 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 · Analyzed | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 91% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected fcdb427bc7cf5e9e5d7280cf09c08dec49b49432 – < 374d9b3eb4b08407997ef1fce96119d31e0c0bc4
- affected fcdb427bc7cf5e9e5d7280cf09c08dec49b49432 – < 0489c30d080f07cc7f09d04de723d8c2ccdb61ef
- affected fcdb427bc7cf5e9e5d7280cf09c08dec49b49432 – < 29ef03e5b84431171d6b77b822985b54bc44b793
- affected fcdb427bc7cf5e9e5d7280cf09c08dec49b49432 – < 5bfa301e1e59a9b1a7b62a800b54852337c97416
- affected fcdb427bc7cf5e9e5d7280cf09c08dec49b49432 – < 7e470d8efd10725b189ca8951973a8425932398a
- affected fcdb427bc7cf5e9e5d7280cf09c08dec49b49432 – < a27e27eee313fe1c450b6af1e80e64412546cab4
- affected fcdb427bc7cf5e9e5d7280cf09c08dec49b49432 – < 16c173abee315953fd17a279352fec4a1faee862
- affected fcdb427bc7cf5e9e5d7280cf09c08dec49b49432 – < b14b076ce593f72585412fc7fd3747e03a5e3632
- affected 2.6.30
- unaffected < 2.6.30
- unaffected 5.4.297 – ≤ 5.4.*
- unaffected 5.10.241 – ≤ 5.10.*
- unaffected 5.15.190 – ≤ 5.15.*
- unaffected 6.1.147 – ≤ 6.1.*
- unaffected 6.6.100 – ≤ 6.6.*
- unaffected 6.12.40 – ≤ 6.12.*
- unaffected 6.15.8 – ≤ 6.15.*
- unaffected 6.16 – ≤ *
References
References10
- https://git.kernel.org/stable/c/374d9b3eb4b08407997ef1fce96119d31e0c0bc4 (opens in a new tab)
- https://git.kernel.org/stable/c/0489c30d080f07cc7f09d04de723d8c2ccdb61ef (opens in a new tab)
- https://git.kernel.org/stable/c/29ef03e5b84431171d6b77b822985b54bc44b793 (opens in a new tab)
- https://git.kernel.org/stable/c/5bfa301e1e59a9b1a7b62a800b54852337c97416 (opens in a new tab)
- https://git.kernel.org/stable/c/7e470d8efd10725b189ca8951973a8425932398a (opens in a new tab)
- https://git.kernel.org/stable/c/a27e27eee313fe1c450b6af1e80e64412546cab4 (opens in a new tab)
- https://git.kernel.org/stable/c/16c173abee315953fd17a279352fec4a1faee862 (opens in a new tab)
- https://git.kernel.org/stable/c/b14b076ce593f72585412fc7fd3747e03a5e3632 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.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-2025-26111 (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-2025-38530)Record last updated .