Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-90912.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-90912
Upstream
Published
2026-06-24T05:17:31Z
Modified
2026-08-28T17:48:11Z
Summary
CVE-2026-9539 affecting package libslirp for versions less than 4.9.3-1
Details

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

Affected packages

Azure Linux:3 / libslirp

Package

Name
libslirp
Purl
pkg:rpm/azure-linux/libslirp

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.9.3-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-90912.json"