Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — ksmbd: fix overflow in dacloffset bounds check
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U H N H 7.1 .0066 49.0 —
AFFECTED
Product Versions Fixed
Linux 0626e6641f6b467447c81dd7678a69c66f7746cf – —
Linux 5.15 – 6.12.23
TIMELINE
Dec 29 Reserved by Linux
Apr 16 Published (CNA: Linux)
Jul 30 RESCORED — CVE-2025-22039 (Linux). CVSS 8.8 → 7.1 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix overflow in dacloffset bounds check
The dacloffset field was originally typed as int and used in an
unchecked addition, which could overflow and bypass the existing
bounds check in both smb_check_perm_dacl() and smb_inherit_dacl().
This could result in out-of-bounds memory access and a kernel crash
when dereferencing the DACL pointer.
This patch converts dacloffset to unsigned int and uses
check_add_overflow() to validate access to the DACL.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| December 29, 2024 | Reserved | Reserved by Linux |
| April 16, 2025 | Published | Published (CNA: Linux) |
| July 30, 2026 | RESCORED | RESCORED — CVE-2025-22039 (Linux). CVSS 8.8 → 7.1 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 0626e6641f6b467447c81dd7678a69c66f7746cf | — |
| Linux | Linux | — | 5.15 | 6.12.23 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-22039 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.