EUVD-2026-31202
GHSA-p4w9-3pj8-mhq7
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionNVD
A flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially crafted Debian repository metadata. An attacker could exploit this by providing malicious SHA384 or SHA512 checksum tags, leading to memory corruption and a denial of service (DoS) in the affected system.
AnalysisAI
Stack-based buffer overflow in libsolv's Debian metadata parser allows remote, unauthenticated attackers to cause a denial of service by serving maliciously crafted Debian repository metadata containing SHA384 or SHA512 checksum tags. The root cause, confirmed by the GitHub PR #616 diff, is a statically allocated 65-byte stack buffer in ext/repo_deb.c sized only for SHA256 digests, which is overflowed by the larger SHA384 (96 hex chars) and SHA512 (128 hex chars) values. …
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