openssh: openssh: shared LZ77 compression dictionary leaks plaintext across channels

A flaw was found in OpenSSH. When compression is negotiated, channels on the same connection share one LZ77 dictionary. A peer who can write on one channel can recover plaintext from another channel by chosen-plaintext lengths...

Out-of-bounds Memory Read

zstd-jni is vulnerable to an out-of-bounds memory read. The vulnerability is due to insufficient validation of untrusted offset and length values, which allows an attacker to read data from the native heap into the compression dictionary, potentially causing JVM crashes...

github.com/klauspost/compress: klauspost/compress: Denial of Service via integer overflow in dictionary processing

A flaw was found in the klauspost/compress package. A remote attacker can exploit this vulnerability by supplying a specially crafted compression dictionary with an excessively large repeat value, triggering an integer overflow. When the dictionary is subsequently processed, this overflow leads t...

CVE-2026-87825 zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free of Compression and Decompression Dictionaries

zstd-jni before 1.5.7-14 contains a use-after-free vulnerability where streams and contexts hold a dictionary's shared lock only during the load call, allowing the dictionary to be closed while still referenced. Attackers can close a dictionary after associating it with a stream or context, causi...

Out-of-bounds Read

Overview Affected versions of this package are vulnerable to Out-of-bounds Read due to the ZstdDictCompressbyte dict, int offset, int length, int level constructor in ZstdDictCompress.java. An attacker can trigger a native heap read, crash the JVM, or leak adjacent memory by supplying a negative...

github.com/klauspost/compress: klauspost/compress: Denial of Service via integer overflow in dictionary processing

A flaw was found in the klauspost/compress package. A remote attacker can exploit this vulnerability by supplying a specially crafted compression dictionary with an excessively large repeat value, triggering an integer overflow. When the dictionary is subsequently processed, this overflow leads t...

CVE-2025-38627 f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic

In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: fix UAF of f2fsinodeinfo in f2fsfreedic The decompressioctx may be released asynchronously after I/O completion. If this file is deleted immediately after read, and the kworker of processing postreadwq has not bee...