CVE-2025-38533net: libwx: fix the using of Rx buffer DMA
- 9.8CriticalCVSS base score
- 0.33%Exploitation in 30 daysEPSS · top 73% 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: net: libwx: fix the using of Rx buffer DMA The wx_rx_buffer structure contained two DMA address fields: 'dma' and 'page_dma'. However, only 'page_dma' was actually initialized and used to program the Rx descriptor. But 'dma' was uninitialized and used in some paths. This could lead to undefined behavior, including DMA errors or use-after-free, if the uninitialized 'dma' was used. Althrough such error has not yet occurred, it is worth fixing in the code.
Timeline
ID reserved
By Linux
- 4 months later
· 4 months later
Published
- 12 months later
· 12 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 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/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)
- 0.33% · top 73% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected 3c47e8ae113a68da47987750d9896e325d0aeedd – < 027701180a7bcb64c42eab291133ef0c87b5b6c5
- affected 3c47e8ae113a68da47987750d9896e325d0aeedd – < ba7c793f96c1c2b944bb6f423d7243f3afc30fe9
- affected 3c47e8ae113a68da47987750d9896e325d0aeedd – < 05c37b574997892a40a0e9b9b88a481566b2367d
- affected 3c47e8ae113a68da47987750d9896e325d0aeedd – < 5fd77cc6bd9b368431a815a780e407b7781bcca0
- affected 6.3
- unaffected < 6.3
- unaffected 6.6.100 – ≤ 6.6.*
- unaffected 6.12.40 – ≤ 6.12.*
- unaffected 6.15.8 – ≤ 6.15.*
- unaffected 6.16 – ≤ *
References
References4
- https://git.kernel.org/stable/c/027701180a7bcb64c42eab291133ef0c87b5b6c5 (opens in a new tab)
- https://git.kernel.org/stable/c/ba7c793f96c1c2b944bb6f423d7243f3afc30fe9 (opens in a new tab)
- https://git.kernel.org/stable/c/05c37b574997892a40a0e9b9b88a481566b2367d (opens in a new tab)
- https://git.kernel.org/stable/c/5fd77cc6bd9b368431a815a780e407b7781bcca0 (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-2025-27888 (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-2025-38533)Record last updated .