OSV-2026-795 Stack-buffer-underflow in probe_dasd_pt
A stack-buffer-underflow in the Linux kernel DASD probe function can cause a crash, requiring local access to exploit.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2026-795?
OSV-2026-795 is a memory corruption vulnerability in util-linux, published on 22 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=514896889
Crash type: Stack-buffer-underflow READ 1
Crash state:
probe_dasd_pt
idinfo_probe
partitions_probe
Which versions are affected by OSV-2026-795?
1 open source package ship an affected version, including util-linux.
| Package | Affected | Fixed in |
|---|---|---|
util-linux OSS-Fuzz | All versions | None |
How do I fix OSV-2026-795?
No fix has been published for OSV-2026-795 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2026-795 being exploited?
There is no known exploitation of OSV-2026-795 in the wild and no public exploit code.