SUSE-SU-2026:4188-1

    Dashboard / Vulnerabilities / SUSE-SU-2026:4188-1

    SUSE-SU-2026:4188-1

    Published: 15 Sept 2026Last Modified: 16 Sept 2026

    Summary: Security update for libpcap

    Details: This update for libpcap fixes the following issues: - CVE-2026-0799: the BPF interpreter does not validate values in BPF instructions that load/store a value from/to a scratch memory register and allows for OOB access (bsc#1279782). - CVE-2026-6244: libpcap BPF interpreter for the 'div #k' and 'mod #k' ALU instructions does not check whether the immediate value is zero. In particular uncommon use cases a crafted filter program can cause a division by zero (bsc#1279595). - CVE-2026-6554: libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction implements looping via backward jumps, but it does not limit the number of loop iterations. Can cause infinite loop (bsc#1279584). - CVE-2026-18238: `rpcap` client code that processes a `RPCAP_MSG_PACKET` message received from the server incorrectly validates its headers and allows for an OOB access (bsc#1279783). - CVE-2026-18313: `rpcapd` allocates up to 65536 bytes per each `RPCAP_MSG_UPDATEFILTER_REQ` or `RPCAP_MSG_STARTCAP_REQ` message received from the client and never frees the memory (bsc#1279784). - CVE-2026-31911: libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process (bsc#1279588). - CVE-2026-31912: libpcap BPF interpreter detects neither reaching the end of the filter program buffer due to lack of a return instruction nor executing a jump instruction with an offset that translates to a pointer outside of the buff (bsc#1279593).

    References: https://www.suse.com/support/update/announcement/2026/suse-su-20264188-1/, https://bugzilla.suse.com/1279584, https://bugzilla.suse.com/1279588, https://bugzilla.suse.com/1279593, https://bugzilla.suse.com/1279595, https://bugzilla.suse.com/1279782, https://bugzilla.suse.com/1279783, https://bugzilla.suse.com/1279784, https://www.suse.com/security/cve/CVE-2026-0799, https://www.suse.com/security/cve/CVE-2026-18238, https://www.suse.com/security/cve/CVE-2026-18313, https://www.suse.com/security/cve/CVE-2026-31911, https://www.suse.com/security/cve/CVE-2026-31912, https://www.suse.com/security/cve/CVE-2026-6244, https://www.suse.com/security/cve/CVE-2026-6554

    Affected packages

    Package

    Name: libpcap

    Purl: pkg:rpm/suse/libpcap&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.10.5-150700.3.13.1

    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
    SUSE-SU-2026:4188-1 | CVE-DB