Integer overflow in GNU C Library (glibc) - CVE-2026-0861
Published: February 4, 2026
Vulnerability identifier: #VU122299
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-0861
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GNU
Affected software:
GNU C Library (glibc)
GNU C Library (glibc)
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the memalign functions, such as memalign(), posix_memalign(), aligned_alloc(). A remote attacker can pass specially crafted data to the application, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2026-0861
Install updates from vendor's website.