GO-2026-6905 json
Panic on negative member size in Reader.Read in github.com/blakesmith/ar
published 2026-11-05 3 d ago modified 2026-11-05 3 d ago
- cvss
- —
- not scored
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- —
- no score, EPSS covers CVEs only
- public exploits
- 0
- none known
Summary
Reader.Next parses the 10-byte decimal size field of an archive member header with strconv.ParseInt without rejecting negative values. A header with a negative size leaves the reader with a negative remaining byte count, causing the subsequent call to Reader.Read to panic with a slice bounds out of range error when slicing the caller's buffer.
Patch / fix
- github.com/blakesmith/ar#10 pull request
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/blakesmith/ar | all versions |
no fix listed |
References
Sources
- OSV GO-2026-6905
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.