GHSA-4243-hp56-4m7fMediumCVSS 6.5
An out-of-bounds heap read and integer underflow in the TCP urgent data handling (sosendoob) in...
🔗 CVE IDs covered (1)
📋 Description
An out-of-bounds heap read and integer underflow in the TCP urgent data handling (sosendoob) in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments (e.g., QEMU) allows a privileged guest VM attacker (root or CAP_NET_RAW) to leak gigabytes of sensitive host-process heap memory via sending crafted TCP segments with manipulated URG flags and urgent pointers (ti_urp).
🔗 References (5)
- https://nvd.nist.gov/vuln/detail/CVE-2026-9539
- https://gitlab.freedesktop.org/slirp/libslirp/-/commit/927bca7344e31fd58e2f7afaca784aad4400eb84
- https://gitlab.freedesktop.org/slirp/libslirp/-/releases/v4.9.2
- https://gitlab.freedesktop.org/slirp/libslirp/-/work_items/93
- https://github.com/advisories/GHSA-4243-hp56-4m7f