CVE-2026-0861

Integer overflow in memalign leads to heap corruption

HIGH
8.4
CVSS Score
Published: January 14, 2026 at 09:01 PM UTC
Updated: June 17, 2026 at 10:11 AM UTC
2 products affected across 2 vendorsGlibcGlibc

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Severity
HIGH8.4
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Passing too large an alignment to the memalign suite of functions (memalign, posix_memalign, aligned_alloc, valloc, pvalloc) in the GNU C Library version 2.30 to 2.42 may result in an integer overflow, which could consequently result in a heap corruption.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.30 ≤ v ≤ 2.42
2.30 ≤ v ≤ 2.422.30

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.4HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-190

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