DEBIAN-CVE-2026-47321
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-47321
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-47321.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-47321
- Upstream
- CVE-2026-47321
- Published
- 2026-09-21T08:16:37Z
- Modified
- 2026-09-22T05:01:39Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
The CompressionFilter class uses ZLib to deflate and inflate data sent and received. When we inflate incoming data, the filter does not control the resulting size, and create a buffer no matter what. Some compressed data may have a compression ration greater than 1 thousand, leading to an exhaustion of the application memory, as we don't control the deflated size. The fix adds such a control by allowing the application developer to provide a fixed size limit, which when reached throws an exception. It also allows the user to provide a compression ratio that should not be exceeded, protected the application from small inflated files that inflate in gigantic files, but with a grace limit for the resulting size (1Mb) to avoid false positive (like a very small file inflating with a high ratio, but resulting with a acceptable size, like a few thousands bytes) For application using this feature, it is highly recommended to create the CompressionFilter and to pass the maximum limit as a forth constructor parameter, maxDecompressedSize: public CompressionFilter(final boolean compressInbound, final boolean compressOutbound, final int compressionLevel, final int maxDecompressedSize)Optionally one can also provide a maxDecompressRatio fifth parameter, and a decompressRatioMinSize sixth parameter to allow small inflated files with a high compression ratio to still be accepted. Here are the additional constructor: public CompressionFilter(final boolean compressInbound, final boolean compressOutbound, final int compressionLevel, final int maxDecompressedSize, final long maxDecompressRatio, final long decompressRatioMinSize) Also note that a fluent API has been added to spare the users the pain to call a constructor with that many parameters: CompressionFilter compressionFilter = new CompressionFilter() .setCompressionLevel(Zlib.COMPRESSION_MAX) .setMaxDecompressedSize(1_000_000) .setMaxDecompressRatio(100). .setDecompressRatioMinSize(100_000); Applications using Apache MINA are advised to upgrade and configure their CompressionFilter instance.
- References
Affected packages
Debian:12 / mina
Package
- Name
- mina
- Purl
- pkg:deb/debian/mina?arch=source&distro=bookworm
Debian:12 / mina2
Package
- Name
- mina2
- Purl
- pkg:deb/debian/mina2?arch=source&distro=bookworm
Debian:13 / mina2
Package
- Name
- mina2
- Purl
- pkg:deb/debian/mina2?arch=source&distro=trixie
Debian:14 / mina2
Package
- Name
- mina2
- Purl
- pkg:deb/debian/mina2?arch=source&distro=forky