CVE-2025-40172accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages()
- 7.8HighCVSS base score
- 0.15%Exploitation in 30 daysEPSS · top 95% 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: accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages() Currently, if find_and_map_user_pages() takes a DMA xfer request from the user with a length field set to 0, or in a rare case, the host receives QAIC_TRANS_DMA_XFER_CONT from the device where resources->xferred_dma_size is equal to the requested transaction size, the function will return 0 before allocating an sgt or setting the fields of the dma_xfer struct. In that case, encode_addr_size_pairs() will try to access the sgt which will lead to a general protection fault. Return an EINVAL in case the user provides a zero-sized ALP, or the device requests continuation after all of the bytes have been transferred.
Timeline
ID reserved
By Linux
- 7 months later
· 7 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 |
|---|---|---|---|
| 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 · Deferred | 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)
- 0.15% · top 95% of all CVEs (14 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 96d3c1cadedb6ae2e8965e19cd12caa244afbd9c – < 48b1d42286bfef7628b1d6c8c28d4e456c90f725
- affected 96d3c1cadedb6ae2e8965e19cd12caa244afbd9c – < 551f1dfbcb7f3e6ed07f9d6c8c1c64337fcd0ede
- affected 96d3c1cadedb6ae2e8965e19cd12caa244afbd9c – < 1ab9733d14cc9987cc5dcd1f0ad1f416e302e2e6
- affected 96d3c1cadedb6ae2e8965e19cd12caa244afbd9c – < 11f08c30a3e4157305ba692f1d44cca5fc9a8fca
- affected d410a96e5cb8c1ec7049c83f2edcd8bbfaf5d9b3
- affected 6.4.12 – < 6.5
- affected 6.5
- unaffected < 6.5
- unaffected 6.6.114 – ≤ 6.6.*
- unaffected 6.12.55 – ≤ 6.12.*
- unaffected 6.17.5 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References4
- https://git.kernel.org/stable/c/48b1d42286bfef7628b1d6c8c28d4e456c90f725 (opens in a new tab)
- https://git.kernel.org/stable/c/551f1dfbcb7f3e6ed07f9d6c8c1c64337fcd0ede (opens in a new tab)
- https://git.kernel.org/stable/c/1ab9733d14cc9987cc5dcd1f0ad1f416e302e2e6 (opens in a new tab)
- https://git.kernel.org/stable/c/11f08c30a3e4157305ba692f1d44cca5fc9a8fca (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-2025-124911 (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-2025-40172)Record last updated .