CVE-2026-70634
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-125
Lectura fuera de límites
Fecha de publicación:
06/08/2026
Última modificación:
07/08/2026
Descripción
*** Pendiente de traducción *** TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read in the Dictionary compression reverse row iterator (tsl/src/compression/algorithms/dictionary.c). The forward path validates the decoded index; the reverse path uses an assertion compiled out of release builds, leaving the 64-bit Simple8b index unvalidated and the read offset attacker-controlled. Attackers with DML access to a physical compressed relation can store a crafted datum and run a reverse-order scan. With a pass-by-value column type the out-of-bounds Datum is returned to the client as a normal column value, disclosing backend memory including the shared buffer pool, which SQL access control does not cover.
Impacto
Puntuación base 4.0
7.20
Gravedad 4.0
ALTA
Puntuación base 3.x
8.10
Gravedad 3.x
ALTA