VDB
DEBIAN-CVE-2026-31478
DEBIAN-CVE-2026-31478
PUBLISHED
CVSS 9.800000190734863 CRITICAL
In the Linux kernel, the following vulnerability has been resolved: ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len() After this commit (e2b76ab8b5c9 "ksmbd: add support for read compound"), response buffer management was changed to use dynamic iov array. In the new design, smb2_calc_max_out_buf_len() expects the second argument (hdr2_len) to be the offset of ->Buffer field in the response structure, not a hardcoded magic number. Fix the remaining call sites to use the correct offsetof() value.
Risk Scores
CVSS v3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | linux | |
| Debian:13 | linux | 0, 6.12.38-1, 6.12.41-1 |
| Debian:14 | linux | 6.16.12-1, 6.16.12-2, 6.16.3-1 |
| Debian:12 | linux | 6.9.10-1, 6.9.11-1, 6.9.12-1 |
| Debian:11 | linux-6.1 | 0, 6.1.106-3, 6.1.106-3 |
Timeline
- Apr 22, 2026 CVE Published
- May 2, 2026 CVE Updated