PatchTheCVECVE-2025-38728: In the Linux kernel, the following vulnerability has been resolved: smb3: fix for slab out of bounds on mount
CVE-2025-38728 is a critical-severity flaw (CVSS 9.1) affecting linux kernel, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In the Linux kernel, the following vulnerability has been resolved: smb3: fix for slab out of bounds on mount to ksmbd With KASAN enabled, it is possible to get a slab out of bounds during mount to ksmbd due to missing check in parse_server_interfaces() (see below): BUG: KASAN: slab-out-of-bounds in parse_server_interfaces+0x14ee/0x1880 [cifs] Read of size 4 at addr ffff8881433dba98 by task mount/9827 CPU: 5 UID: 0 PID: 9827 Comm: mount T
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.1 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 75%) |
| CISA exploited list | No |
| Weakness | CWE-125 |
| Published | 2025-09-04 |
| Last modified | 2026-10-30 |
Last updated 2026-10-30 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-38728?
linux kernel: upgrade to 6.1.149, 6.6.103, 6.12.43, 6.15.11, 6.16.2; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2025-38728 being exploited?
CVE-2025-38728 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-38728 affect?
CVE-2025-38728 affects linux kernel, debian linux. Severity is critical (CVSS 9.1). In the Linux kernel, the following vulnerability has been resolved: smb3: fix for slab out of bounds on mount to ksmbd With KASAN enabled, it is possible to get a slab out of bounds during mount to ksmbd due to missing check in parse_serv
How urgent is CVE-2025-38728?
Priority 48/100. Critical severity; Remotely exploitable, no login, no user action; On your watchlist
Software pages
Linux kernel vulnerabilities · Debian vulnerabilities
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