PUBLISHED
2026-08-09 18:16
MODIFIED
2026-08-09 18:16
EPSS (Prob. Exploit)
0.26%
Top 83.6%
> DESCRIPTION
Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching via an undersized superlinear cache in S_regmatch.
The regex engine's superlinear cache holds one bit per subject position for each participating WHILEM node, so the bit count is the subject length plus one times the number of nodes. Nothing checks that product for positive overflow of the signed 32-bit count: a 286331153 byte subject matched against a pattern with 15 participating nodes stores the count as 14, leaving a two byte cache. The cache is then indexed from the real match position and node number, so reads go past the end of the allocation, and on failure CACHEsayNO sets a bit past it.
A caller that matches an attacker controlled subject of this size against a pattern of this shape can crash the process or corrupt heap memory.
> AFFECTED_PRODUCTS
ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.
> CWE DETAILED DESCRIPTIONS
CWE-125: Out-of-bounds Read - The product reads data past the end, or before the beginning, of the intended buffer. | CWE-190: Integer Overflow or Wraparound - The product performs a calculation that can
produce an integer overflow or wraparound when the logic
assumes that the resulting value will always be larger than
the original value. This occurs when an integer value is
incremented to a value that is too large to store in the
associated representation. When this occurs, the value may
become a very small or negative number. | CWE-787: Out-of-bounds Write - The product writes data past the end, or before the beginning, of the intended buffer.
> RED HAT SECURITY ADVISORIES
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
An update for Red Hat Hardened Images RPMs is now available.
> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)
Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching via an undersized superlinear cache in S_regmatch
AFFECTED PACKAGES:
Unknown / Unknown
236 versions affected
> HISTORIQUE DES MODIFICATIONS
Première apparition
09/08/2026 18:16
Source: NVD
📊
ENRICHISSEMENT
01/09/2026 06:02
CWE
Champ modifié: Description CWE
Nouvelle valeur:
CWE-125: Out-of-bounds Read - The product reads data past the end, or before the beginning, of the intended buffer. | CWE-190: Integer Overflow or Wraparound - The product performs a calculation that ...
Total des modifications: 1
Dernière mise à jour: 2 months ago