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TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read vulnerability in the Gorilla compression reverse row iterator that allows authenticated attackers to cause a denial of service by storing a crafted compressed datum with an internally inconsistent BitArray. Attackers with DML access to a compressed hypertable can trigger an unsigned integer wraparound in the reverse iterator bucket index computation, causing a read beyond the end of the bucket array, resulting in a SIGSEGV crash that can be repeatedly triggered on each subsequent reverse-order scan.

TimescaleDB through 2.29.1, fixed in commit 517c13e, contains an out-of-bounds read vulnerability in the Gorilla compression reverse row iterator that allows authenticated attackers to cause a denial of service by storing a crafted compressed datum with an internally inconsistent BitArray. Attackers with DML access to a compressed hypertable can trigger an unsigned integer wraparound in the reverse iterator bucket index computation, causing a read beyond the end of the bucket array, resulting in a SIGSEGV crash that can be repeatedly triggered on each subsequent reverse-order scan.

ALT-PU-2026-14227: package `postgresql17-timescaledb` update to version 2.29.2-alt1

ALT-PU-2026-14225: package `postgresql16-timescaledb` update to version 2.29.2-alt1

ALT-PU-2026-13998: package `postgresql16-timescaledb` update to version 2.29.2-alt1

ALT-PU-2026-13997: package `postgresql17-timescaledb` update to version 2.29.2-alt1

ALT-PU-2026-13995: package `postgresql18-timescaledb` update to version 2.29.2-alt1