SUSE-SU-2026:4239-1

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-2026-31911: 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

Affected packages

Name: libpcap
Purl: pkg:rpm/suse/libpcap&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSS

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.8.1-10.12.1

{
    "binaries": [
        {
            "libpcap-devel": "1.8.1-10.12.1",
            "libpcap1": "1.8.1-10.12.1"
        }
    ]
}

source

"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:4239-1.json"

Name: libpcap
Purl: pkg:rpm/suse/libpcap&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.8.1-10.12.1

{
    "binaries": [
        {
            "libpcap-devel": "1.8.1-10.12.1",
            "libpcap1": "1.8.1-10.12.1"
        }
    ]
}

source

"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:4239-1.json"