MGASA-2026-0382

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    MGASA-2026-0382

    Published: 8 Sept 2026Last Modified: 8 Sept 2026

    Summary: Updated tor packages fix security vulnerabilities

    Details: An out-of-bounds write when parsing a consensus or detached signature with unexpected signature digest type (CVE-2026-77642). A NULL write after free when sending a CONFLUX_SWITCH cell fails, resulting in a crash (CVE-2026-77641). An infinite loop when decompressing a truncated zlib/gzip stream with done=1 (CVE-2026-77640). A compression bomb bypass where an attacker could concatenate many gzip or zlib sub-streams (CVE-2026-77639). A race condition where in just the right circumstances a rendezvous point could man-in-the-middle (impersonate) the onion service that the client was trying to reach (CVE-2026-77638). A use-after-free that a malicious exit node could use to crash a client (CVE-2026-77587). Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams (CVE-2026-77584).

    References: https://advisories.mageia.org/MGASA-2026-0382.html, https://bugs.mageia.org/show_bug.cgi?id=36213, https://lists.opensuse.org/archives/list/[email protected]/message/J3OOWWFCIOAR7SCIVWYWCHHV6G2BGSPN/, https://lists.debian.org/debian-security-announce/2026/msg00283.html

    Affected packages

    Package

    Name: tor

    Purl: pkg:rpm/mageia/tor?arch=source&distro=mageia-10

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.4.9.11-1.mga10

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High