GHSA-rmc9-8qp4-gjhx
Panic on chroma QP offsets enabled with an empty offset list
GHSA-rmc9-8qp4-gjhx is a medium vulnerability (CVSS 6.5) in heifer-hevc-dec, published November 4, 2026. No source lists public exploit code. Fixed in heifer-hevc-dec 0.3.27.
- Severity
- 6.5 MediumCVSS 3.1, OSV
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
0.3.27heifer-hevc-dec
Description
An HEVC Range Extensions stream can set cu_chroma_qp_offset_enabled_flag in a
slice while its picture parameter set carries an empty chroma QP offset list.
The decoder then read the list at the signalled index, which panicked on the
out-of-range access. A panic aborts the decoding thread, or the whole process
when built with panic = "abort". The crate forbids unsafe code, so there is
no memory corruption.
Any application that decodes untrusted HEIC files or HEVC streams with
heifer-hevc-dec, directly or through the heifer crate, is affected.
The flaw was corrected in 0.3.27 (commit
1a8426e):
with an empty list there is no offset to apply, and the offset is zero.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Affected packages
| Package | Affected | Fixed |
|---|---|---|
heifer-hevc-deccrates.io | 0.0.0-0 up to 0.3.27 | 0.3.27 |
What each source reports
OSV Score usedRUSTSEC-2026-0460
Panic on chroma QP offsets enabled with an empty offset list
An HEVC Range Extensions stream can set cu_chroma_qp_offset_enabled_flag in a
slice while its picture parameter set carries an empty chroma QP offset list.
The decoder then read the list at the signalled index, which panicked on the
out-of-range access. A panic aborts the decoding thread, or the whole process
when built with panic = "abort". The crate forbids unsafe code, so there is
no memory corruption.
Any application that decodes untrusted HEIC files or HEVC streams with
heifer-hevc-dec, directly or through the heifer crate, is affected.
The flaw was corrected in 0.3.27 (commit
1a8426e):
with an empty list there is no offset to apply, and the offset is zero.
- Record
RUSTSEC-2026-0460- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-09
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.