CVE-2026-77640

A flaw was found in tor. A remote attacker could send a specially crafted, truncated zlib/gzip stream. This could lead to an infinite loop during decompression, causing a denial of service DoS in the affected component. Mitigation Mitigation for this issue is either not available or the currently...

Linux Distros Unpatched Vulnerability : CVE-2026-77640

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1. A truncated stream never reaches ZSTREAMEND, causi...

DEBIAN-CVE-2026-77640

tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1. A truncated stream never reaches ZSTREAMEND, causing zlib to return ZBUFERROR with no input remaining, which bufaddcompress mistook for a full output buffer and retried forever. Fixed by...

CVE-2026-77640

tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1. A truncated stream never reaches ZSTREAMEND, causing zlib to return ZBUFERROR with no input remaining, which bufaddcompress mistook for a full output buffer and retried forever. Fixed by...

CVE-2026-77640

tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1. A truncated stream never reaches ZSTREAMEND, causing zlib to return ZBUFERROR with no input remaining, which bufaddcompress mistook for a full output buffer and retried forever. Fixed by...

CVE-2026-77640

Tor before 0.4.9.9 is vulnerable to a denial of service when decompressing a truncated zlib/gzip stream with done=1. The root cause is in buf_add_compress() : a truncated stream never reaches Z_STREAM_END, so zlib returns Z_BUF_ERROR with no input remaining, which the function misinterpreted as a...

CVE-2026-77640

tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1. A truncated stream never reaches ZSTREAMEND, causing zlib to return ZBUFERROR with no input remaining, which bufaddcompress mistook for a full output buffer and retried forever. Fixed by...

CVE-2026-70630

FFmpeg versions from 3.0 up to, but not including, 9.0 contain an uninitialized heap memory read vulnerability in the native Screenpresso decoder libavcodec/screenpresso.c that allows attackers to recover sensitive memory contents by supplying a crafted SPV1 packet with a valid zlib stream that...

Security update for tor (moderate)

openSUSE Security Update: Security update for tor Announcement ID: openSUSE-SU-2026:0188-1 Rating: moderate References: Affected Products: openSUSE Backports SLE-15-SP7 An update that contains security fixes can now be installed. Description: This update for tor fixes the following issues: - Upda...