Memory corruption via unchecked compressed-page decompression
Published May 26, 2026 · Updated Aug 26, 2026
Heap buffer overflow in libsolv allows attackers to corrupt memory by causing an application to process a crafted .solv file. The repopagestore_load_page_range and repopagestore_read_or_setup_pages paths call unchecked_decompress_buf before validating output length or back-reference offsets. Exploitation requires ingestion of malicious repository metadata and causes out-of-bounds reads or writes, process crashes, or altered execution.
Summary
What happened
Heap buffer overflow in libsolv allows attackers to corrupt memory by causing an application to process a crafted .solv file. The repopagestore_load_page_range and repopagestore_read_or_setup_pages paths call unchecked_decompress_buf before validating output length or back-reference offsets. Exploitation requires ingestion of malicious repository metadata and causes out-of-bounds reads or writes, process crashes, or altered execution.
The record
- CVE
- CVE-2026-48864
- Published
- May 26, 2026
- Updated
- Aug 26, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat Enterprise Linux Extended Lifecycle Support
- Classifications
- CWE-787, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 26, 2026CVE publishedPublication date reported by the CVE source.
- Aug 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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