CVE-2026-12844 (GCVE-0-2026-12844)

Vulnerability from cvelistv5 – Published: 2026-06-25 15:26 – Updated: 2026-06-25 19:35
VLAI
Title
List::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise function
Summary
List::SomeUtils::XS versions before 0.59 for Perl have a heap buffer overflow in the pairwise function. pairwise() collects the values returned by the block into a heap buffer sized to the longer input array, then grows the buffer before each copy with a single quadrupling (alloc <<= 2) instead of a loop. A block call that returns more than four times the current allocation in one invocation outgrows that one quadrupling, and the copy writes past the end of the buffer. Any caller of pairwise() whose block returns, for a single pair, more than four times the longer input array's length writes past the buffer and corrupts the heap.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 18:56 UTC
CWE
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 63/100 over 317 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
DROLSKY List::SomeUtils::XS Affected: 0 , < 0.59 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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