Medium [CVE-2026-93312] Denial of Service via null pointer dereference in JBIG2Stream::rewind function
This medium-severity Red Hat Linux advisory covers CVE-2026-93312; related products: Red Hat Hardened Images.
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Summary
Denial of Service via null pointer dereference in JBIG2Stream::rewind function. Red Hat rates this moderate (CVSS 4.3).
Weakness: CWE-476. Red Hat lists fixing advisory RHSA-2026:58482 with package poppler-main-26.08.0-1.hum1.
Affected product named by the advisory: Red Hat Hardened Images.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 10 days ago·verify at source
- poppler-main-26.08.0-1.hum1
- RHSA-2026:58482
Official advisory · high-confidence parse· fetched 10 days ago·verify at source
Mitigation checklist
- Since Poppler is a library used by various applications to process PDF documents, a direct system-wide mitigation is not readily available. Users should exercise caution when opening untrusted PDF files. If possible, process untrusted PDF documents in a sandboxed environment to limit the potential impact of such vulnerabilities.
Official advisory · high-confidence parse· fetched 10 days ago·verify at source
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