ALPINE-CVE-2026-34757
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-34757
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-34757.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/ALPINE-CVE-2026-34757
- Upstream
- Published
- 2026-04-09T15:16:11.003Z
- Modified
- 2026-04-10T18:27:08.052720Z
- Severity
-
- 5.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.0.9 to before 1.6.57, passing a pointer obtained from pnggetPLTE, pnggettRNS, or pnggethIST back into the corresponding setter on the same pngstruct/pnginfo pair causes the setter to read from freed memory and copy its contents into the replacement buffer. The setter frees the internal buffer before copying from the caller-supplied pointer, which now dangles. The freed region may contain stale data (producing silently corrupted chunk metadata) or data from subsequent heap allocations (leaking unrelated heap contents into the chunk struct). This vulnerability is fixed in 1.6.57.
- References
Affected packages
Alpine:v3.20 / libpng
Package
- Name
- libpng
- Purl
- pkg:apk/alpine/libpng?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.6.57-r0
Affected versions
1.*
1.2.34-r0
1.2.35-r0
1.2.36-r0
1.2.37-r0
1.2.38-r0
1.2.39-r0
1.2.40-r0
1.4.0-r0
1.4.1-r0
1.4.1-r1
1.4.2-r0
1.4.3-r0
1.4.4-r0
1.4.5-r0
1.4.5-r1
1.5.2-r0
1.5.2-r1
1.5.2-r2
1.5.4-r0
1.5.5-r0
1.5.5-r1
1.5.8-r0
1.5.9-r0
1.5.10-r0
1.5.11-r0
1.5.12-r0
1.5.13-r0
1.5.14-r0
1.5.15-r0
1.5.16-r0
1.5.17-r0
1.6.3-r0
1.6.5-r0
1.6.6-r0
1.6.7-r0
1.6.8-r0
1.6.9-r0
1.6.10-r0
1.6.12-r0
1.6.13-r0
1.6.14-r0
1.6.15-r0
1.6.16-r0
1.6.17-r0
1.6.18-r0
1.6.19-r0
1.6.20-r0
1.6.21-r0
1.6.22-r0
1.6.23-r0
1.6.23-r1
1.6.23-r2
1.6.24-r0
1.6.25-r0
1.6.26-r0
1.6.27-r0
1.6.27-r1
1.6.28-r0
1.6.29-r0
1.6.29-r1
1.6.30-r0
1.6.31-r0
1.6.32-r0
1.6.34-r0
1.6.34-r1
1.6.35-r0
1.6.37-r0
1.6.37-r1
1.6.37-r2
1.6.38-r0
1.6.39-r0
1.6.39-r1
1.6.39-r2
1.6.39-r3
1.6.39-r4
1.6.40-r0
1.6.41-r0
1.6.42-r0
1.6.43-r0
1.6.44-r0
1.6.53-r0
1.6.54-r0
1.6.55-r0
1.6.56-r0
Alpine:v3.21 / libpng
Package
- Name
- libpng
- Purl
- pkg:apk/alpine/libpng?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.6.57-r0
Affected versions
1.*
1.2.34-r0
1.2.35-r0
1.2.36-r0
1.2.37-r0
1.2.38-r0
1.2.39-r0
1.2.40-r0
1.4.0-r0
1.4.1-r0
1.4.1-r1
1.4.2-r0
1.4.3-r0
1.4.4-r0
1.4.5-r0
1.4.5-r1
1.5.2-r0
1.5.2-r1
1.5.2-r2
1.5.4-r0
1.5.5-r0
1.5.5-r1
1.5.8-r0
1.5.9-r0
1.5.10-r0
1.5.11-r0
1.5.12-r0
1.5.13-r0
1.5.14-r0
1.5.15-r0
1.5.16-r0
1.5.17-r0
1.6.3-r0
1.6.5-r0
1.6.6-r0
1.6.7-r0
1.6.8-r0
1.6.9-r0
1.6.10-r0
1.6.12-r0
1.6.13-r0
1.6.14-r0
1.6.15-r0
1.6.16-r0
1.6.17-r0
1.6.18-r0
1.6.19-r0
1.6.20-r0
1.6.21-r0
1.6.22-r0
1.6.23-r0
1.6.23-r1
1.6.23-r2
1.6.24-r0
1.6.25-r0
1.6.26-r0
1.6.27-r0
1.6.27-r1
1.6.28-r0
1.6.29-r0
1.6.29-r1
1.6.30-r0
1.6.31-r0
1.6.32-r0
1.6.34-r0
1.6.34-r1
1.6.35-r0
1.6.37-r0
1.6.37-r1
1.6.37-r2
1.6.38-r0
1.6.39-r0
1.6.39-r1
1.6.39-r2
1.6.39-r3
1.6.39-r4
1.6.40-r0
1.6.41-r0
1.6.42-r0
1.6.43-r0
1.6.44-r0
1.6.47-r0
1.6.53-r0
1.6.54-r0
1.6.55-r0
1.6.56-r0
Alpine:v3.22 / libpng
Package
- Name
- libpng
- Purl
- pkg:apk/alpine/libpng?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.6.57-r0
Affected versions
1.*
1.2.34-r0
1.2.35-r0
1.2.36-r0
1.2.37-r0
1.2.38-r0
1.2.39-r0
1.2.40-r0
1.4.0-r0
1.4.1-r0
1.4.1-r1
1.4.2-r0
1.4.3-r0
1.4.4-r0
1.4.5-r0
1.4.5-r1
1.5.2-r0
1.5.2-r1
1.5.2-r2
1.5.4-r0
1.5.5-r0
1.5.5-r1
1.5.8-r0
1.5.9-r0
1.5.10-r0
1.5.11-r0
1.5.12-r0
1.5.13-r0
1.5.14-r0
1.5.15-r0
1.5.16-r0
1.5.17-r0
1.6.3-r0
1.6.5-r0
1.6.6-r0
1.6.7-r0
1.6.8-r0
1.6.9-r0
1.6.10-r0
1.6.12-r0
1.6.13-r0
1.6.14-r0
1.6.15-r0
1.6.16-r0
1.6.17-r0
1.6.18-r0
1.6.19-r0
1.6.20-r0
1.6.21-r0
1.6.22-r0
1.6.23-r0
1.6.23-r1
1.6.23-r2
1.6.24-r0
1.6.25-r0
1.6.26-r0
1.6.27-r0
1.6.27-r1
1.6.28-r0
1.6.29-r0
1.6.29-r1
1.6.30-r0
1.6.31-r0
1.6.32-r0
1.6.34-r0
1.6.34-r1
1.6.35-r0
1.6.37-r0
1.6.37-r1
1.6.37-r2
1.6.38-r0
1.6.39-r0
1.6.39-r1
1.6.39-r2
1.6.39-r3
1.6.39-r4
1.6.40-r0
1.6.41-r0
1.6.42-r0
1.6.43-r0
1.6.44-r0
1.6.45-r0
1.6.46-r0
1.6.47-r0
1.6.51-r0
1.6.53-r0
1.6.54-r0
1.6.55-r0
1.6.56-r0
Alpine:v3.23 / libpng
Package
- Name
- libpng
- Purl
- pkg:apk/alpine/libpng?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.6.57-r0
Affected versions
1.*
1.2.34-r0
1.2.35-r0
1.2.36-r0
1.2.37-r0
1.2.38-r0
1.2.39-r0
1.2.40-r0
1.4.0-r0
1.4.1-r0
1.4.1-r1
1.4.2-r0
1.4.3-r0
1.4.4-r0
1.4.5-r0
1.4.5-r1
1.5.2-r0
1.5.2-r1
1.5.2-r2
1.5.4-r0
1.5.5-r0
1.5.5-r1
1.5.8-r0
1.5.9-r0
1.5.10-r0
1.5.11-r0
1.5.12-r0
1.5.13-r0
1.5.14-r0
1.5.15-r0
1.5.16-r0
1.5.17-r0
1.6.3-r0
1.6.5-r0
1.6.6-r0
1.6.7-r0
1.6.8-r0
1.6.9-r0
1.6.10-r0
1.6.12-r0
1.6.13-r0
1.6.14-r0
1.6.15-r0
1.6.16-r0
1.6.17-r0
1.6.18-r0
1.6.19-r0
1.6.20-r0
1.6.21-r0
1.6.22-r0
1.6.23-r0
1.6.23-r1
1.6.23-r2
1.6.24-r0
1.6.25-r0
1.6.26-r0
1.6.27-r0
1.6.27-r1
1.6.28-r0
1.6.29-r0
1.6.29-r1
1.6.30-r0
1.6.31-r0
1.6.32-r0
1.6.34-r0
1.6.34-r1
1.6.35-r0
1.6.37-r0
1.6.37-r1
1.6.37-r2
1.6.38-r0
1.6.39-r0
1.6.39-r1
1.6.39-r2
1.6.39-r3
1.6.39-r4
1.6.40-r0
1.6.41-r0
1.6.42-r0
1.6.43-r0
1.6.44-r0
1.6.45-r0
1.6.46-r0
1.6.47-r0
1.6.49-r0
1.6.51-r0
1.6.51-r1
1.6.53-r0
1.6.54-r0
1.6.55-r0
1.6.56-r0