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Description

A flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted `.solv` file containing negative size values in the `repo_add_solv` function. This leads to an undersized memory allocation and a subsequent out-of-bounds write. An attacker could exploit this to cause a denial of service (DoS).

PUBLISHED Reserved 2026-05-20 | Published 2026-05-20 | Updated 2026-06-26 | Assigner redhat




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Problem types

Heap-based Buffer Overflow

Product status

Default status
affected

0:0.7.33-5.el10_2 (rpm) before *
unaffected

Default status
affected

0.7.38-2.hum1 (rpm) before *
unaffected

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Timeline

2026-04-21:Reported to Red Hat.
2026-05-20:Made public.

Credits

This issue was discovered by AISLE in partnership with Red Hat.

References

github.com/openSUSE/libsolv/pull/617 exploit

access.redhat.com/errata/RHSA-2026:21333 (RHSA-2026:21333) vendor-advisory

access.redhat.com/errata/RHSA-2026:28236 (RHSA-2026:28236) vendor-advisory

access.redhat.com/security/cve/CVE-2026-9149 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2460380 (RHBZ#2460380) issue-tracking

github.com/openSUSE/libsolv/pull/617

cve.org (CVE-2026-9149)

nvd.nist.gov (CVE-2026-9149)

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