OSV-2026-822 Heap-use-after-free in slice_segment_header::operator=
A heap-use-after-free vulnerability in slice segment header parsing allows attackers to cause crashes or potentially execute arbitrary code via crafted media files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2026-822?
OSV-2026-822 is an use after free vulnerability in kimageformats, published on 29 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=517027630
Crash type: Heap-use-after-free READ 4
Crash state:
slice_segment_header::operator=
slice_segment_header::read
decoder_context::read_slice_NAL
Which versions are affected by OSV-2026-822?
1 open source package ship an affected version, including kimageformats.
| Package | Affected | Fixed in |
|---|---|---|
kimageformats OSS-Fuzz | All versions | None |
How do I fix OSV-2026-822?
No fix has been published for OSV-2026-822 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2026-822 being exploited?
There is no known exploitation of OSV-2026-822 in the wild and no public exploit code.