CVE-2025-21676net: fec: handle page_pool_dev_alloc_pages error
- 7.5HighCVSS base score
- 0.45%Exploitation in 30 daysEPSS · top 60% 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: fec: handle page_pool_dev_alloc_pages error The fec_enet_update_cbd function calls page_pool_dev_alloc_pages but did not handle the case when it returned NULL. There was a WARN_ON(!new_page) but it would still proceed to use the NULL pointer and then crash. This case does seem somewhat rare but when the system is under memory pressure it can happen. One case where I can duplicate this with some frequency is when writing over a smbd share to a SATA HDD attached to an imx6q. Setting /proc/sys/vm/min_free_kbytes to higher values also seems to solve the problem for my test case. But it still seems wrong that the fec driver ignores the memory allocation error and can crash. This commit handles the allocation error by dropping the current packet.
Timeline
ID reserved
By Linux
- 33 days later
· 33 days later
Published
- 22 months later
· 22 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 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.45% · top 60% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected 95698ff6177b5f1f13f251da60e7348413046ae4 – < eacdcc14f3c8d4c1447565521e792ddb3a67e08d
- affected 95698ff6177b5f1f13f251da60e7348413046ae4 – < 8a0097db0544b658c159ac787319737712063a23
- affected 95698ff6177b5f1f13f251da60e7348413046ae4 – < 1425cb829556398f594658512d49292f988a2ab0
- affected 95698ff6177b5f1f13f251da60e7348413046ae4 – < 001ba0902046cb6c352494df610718c0763e77a5
- affected 6.1
- unaffected < 6.1
- unaffected 6.1.167 – ≤ 6.1.*
- unaffected 6.6.74 – ≤ 6.6.*
- unaffected 6.12.11 – ≤ 6.12.*
- unaffected 6.13 – ≤ *
References
References7
- https://git.kernel.org/stable/c/eacdcc14f3c8d4c1447565521e792ddb3a67e08d (opens in a new tab)
- https://git.kernel.org/stable/c/8a0097db0544b658c159ac787319737712063a23 (opens in a new tab)
- https://git.kernel.org/stable/c/1425cb829556398f594658512d49292f988a2ab0 (opens in a new tab)
- https://git.kernel.org/stable/c/001ba0902046cb6c352494df610718c0763e77a5 (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-019113.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-457936.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-2025-2625 (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-2025-21676)Record last updated .