CVE-2026-70633

Summary

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.

Affected Software

Weaknesses

• CWE-191: Integer Underflow (Wrap or Wraparound)
• CWE-125: Out-of-bounds Read

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/timescale/timescaledb/pull/10360
• https://github.com/timescale/timescaledb/commit/517c13e7cc6afadb4a7deaa7a5a5a29065e5b5a3
• https://www.vulncheck.com/advisories/timescaledb-out-of-bounds-read-dos-via-gorilla-compression-reverse-iterator

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