CVE-2026-74404crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one
- 7.8HighCVSS base score
- 0.19%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: crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one Sashiko notes: > regarding the bounds check in snp_filter_reserved_mem_regions() > called via walk_iomem_res_desc(): does the check > if ((range_list->num_elements * 16 + 8) > PAGE_SIZE) > allow an off-by-one heap buffer overflow? > > If range_list->num_elements is 255, 255 * 16 + 8 = 4088, which is <= 4096. > Writing range->base (8 bytes) fills 4088-4095, but writing range->page_count > (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated > PAGE_SIZE buffer. Fix this by accounting for the entry about to be written to, in addition to the entries that are already allocated.
Timeline
ID reserved
By Linux
Published
- 2 months later
· 2 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 · Received | 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)
- 0.19% · top 91% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 – < 830c1f3e71989448652973375ef5e39b6ede47a3
- affected 1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 – < c5c79d92da0f9a09f48be5e2aabed2d6d1a96294
- affected 1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 – < af7341616b742ad2c374a90998bd650a035f694d
- affected 1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 – < 1b864b6cb213bbd7b406e9b2e98c962077f300df
- affected 6.9
- unaffected < 6.9
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References4
- https://git.kernel.org/stable/c/830c1f3e71989448652973375ef5e39b6ede47a3 (opens in a new tab)
- https://git.kernel.org/stable/c/c5c79d92da0f9a09f48be5e2aabed2d6d1a96294 (opens in a new tab)
- https://git.kernel.org/stable/c/af7341616b742ad2c374a90998bd650a035f694d (opens in a new tab)
- https://git.kernel.org/stable/c/1b864b6cb213bbd7b406e9b2e98c962077f300df (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-2026-59551 (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-2026-74404)Record last updated .