CVE-2026-95520 (GCVE-0-2026-95520)

Vulnerability from cvelistv5 – Published: 2026-09-29 11:02 – Updated: 2026-09-29 13:19
VLAI
Title
Rpm: rpm: integer overflow in iterreadarchivenext() leads to heap-based buffer overflow when parsing untrusted rpm packages
Summary
A heap-based buffer overflow flaw was found in rpm. Parsing a symlink entry in an untrusted RPM package whose declared RPMTAG_LONGFILESIZES value is 0xFFFFFFFFFFFFFFFF causes an integer overflow in iterReadArchiveNext() that shrinks a buffer allocation to one byte, after which the payload's independently-controlled cpio filesize field is used to write attacker-controlled data past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 13:17 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1070 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-95520 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2537809 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-09-29 10:54
Credits
Red Hat would like to thank tao pan for reporting this issue.
Show details on NVD website
To clipboard 

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