DEBIAN-CVE-2026-76844
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-76844
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-76844.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-76844
- Upstream
- Published
- 2026-08-24T14:17:02Z
- Modified
- 2026-11-07T11:00:09Z
- Severity
-
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
zlib 1.2.11 through 1.3.2 contains a heap buffer overflow: after an underlying write() fails, gz_write() returns without resetting strm.next_in, leaving it pointed at the caller's buffer. A later gz* write call then derives a position from the stale pointer and writes past a heap allocation; any write() failure reaches it, including EPIPE on a blocking descriptor, and in versions before 1.3.1.2 the failed write must be followed by a gzclearerr() call.
- References
Affected packages
Debian:12 / zlib
Package
- Name
- zlib
- Purl
- pkg:deb/debian/zlib?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
1:1.*
1:1.2.13.dfsg-1
1:1.2.13.dfsg-2
1:1.2.13.dfsg-3
1:1.3.dfsg-1
1:1.3.dfsg-2
1:1.3.dfsg-3
1:1.3.dfsg-3.1~exp1
1:1.3.dfsg-3.1
1:1.3.dfsg+really1.3.1-1
1:1.3.dfsg+really1.3.1-2
1:1.3.dfsg+really1.3.1-3
1:1.3.dfsg+really1.3.2-1
1:1.3.dfsg+really1.3.2-2
1:1.3.dfsg+really1.3.2-3
1:1.3.dfsg+really1.3.2-4
Debian:13 / zlib
Package
- Name
- zlib
- Purl
- pkg:deb/debian/zlib?arch=source&distro=trixie
Debian:14 / zlib
Package
- Name
- zlib
- Purl
- pkg:deb/debian/zlib?arch=source&distro=forky
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed1:1.3.dfsg+really1.3.2-4