CVE-2026-9539
Medium · 6.5CVSS
6.5
EPSS
0.2%
Published
Jun 24, 2026
CISA due date
—
The record
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).
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Leap 16.0 | libslirp | 0 | 4.8.0+2-160000.3.1 |
| openSUSE:Tumbleweed | libslirp | 0 | 4.9.3+4-1.1 |
Related vulnerabilities
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- CVE-2026-114038 A flaw was found in device-mapper-multipath. CWE-125
- CVE-2026-112896 Pillow is a Python imaging library. CWE-125
- CVE-2026-112278 rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in… CWE-125
- CVE-2026-112273 libtins through 4.6 contains a heap out-of-bounds read vulnerability in DNS::compose_name… CWE-125
- CVE-2026-112073 A vulnerability was identified in Tencent ncnn up to 44b02dabdcf97499281a4692ebd65bad73dc… CWE-125
- CVE-2026-112020 LodePNG through 20261006 contains a heap out-of-bounds read vulnerability in… CWE-125
- CVE-2026-88842 A flaw was found in BusyBox dpkg. CWE-125