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Vulnerability record · CVE-2021-44568 · published 21 February 2022

CVE-2021-44568: Opensuse libsolv out-of-bounds write vulnerability

Opensuse · Libsolv

Two heap-overflow vulnerabilities exist in openSUSE/libsolv libsolv through 13 Dec 2020 in the decisionmap variable via the resolve_dependencies function at src/solver.c (line 1940 & line 1995), which could cause a remote Denial of Service.

6.5 CVSS 3.1 Medium EPSS 1.8% · top 22.4% CWE-787 · Out-of-bounds write
6.5CVSS 3.1 base score, v2 4.3
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 6 tagged exploit
17 Jun 2026Last modified by NVD

Description

Two heap-overflow vulnerabilities exist in openSUSE/libsolv libsolv through 13 Dec 2020 in the decisionmap variable via the resolve_dependencies function at src/solver.c (line 1940 & line 1995), which could cause a remote Denial of Service.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/openSUSE/libsolv/issues/425 ExploitIssue TrackingThird Party Advisory
https://github.com/yangjiageng/PoC/blob/master/libsolv-PoCs/resolve_dependencies-1940 ExploitThird Party Advisory
https://github.com/yangjiageng/PoC/blob/master/libsolv-PoCs/resolve_dependencies-1995 ExploitThird Party Advisory
https://github.com/openSUSE/libsolv/issues/425 ExploitIssue TrackingThird Party Advisory
https://github.com/yangjiageng/PoC/blob/master/libsolv-PoCs/resolve_dependencies-1940 ExploitThird Party Advisory
https://github.com/yangjiageng/PoC/blob/master/libsolv-PoCs/resolve_dependencies-1995 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2026-48864Opensuse libsolv out-of-bounds write vulnerabilityA flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files du…EPSS 0.26%7.5CVE-2021-33928Opensuse libsolv out-of-bounds write vulnerabilityBuffer overflow vulnerability in function pool_installable in src/repo.h in libsolv before 0.7.17 allows attackers to cause a Denial of Service.EPSS 1.5%7.5CVE-2021-33929Opensuse libsolv out-of-bounds write vulnerabilityBuffer overflow vulnerability in function pool_disabled_solvable in src/repo.h in libsolv before 0.7.17 allows attackers to cause a Denial of Service.EPSS 1.4%7.5CVE-2021-33930Opensuse libsolv out-of-bounds write vulnerabilityBuffer overflow vulnerability in function pool_installable_whatprovides in src/repo.h in libsolv before 0.7.17 allows attackers to cause a Denial of …EPSS 1.5%7.5CVE-2021-33938Opensuse libsolv out-of-bounds write vulnerabilityBuffer overflow vulnerability in function prune_to_recommended in src/policy.c in libsolv before 0.7.17 allows attackers to cause a Denial of Service.EPSS 1.4%7.5CVE-2019-20387Opensuse libsolv out-of-bounds read vulnerabilityrepodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last schema whose length is less than the length of …EPSS 2.3%6.5CVE-2026-9149Opensuse libsolv heap-based buffer overflow vulnerabilityA flaw was found in libsolv. This heap buffer overflow vulnerability occurs when a victim processes a specially crafted `.solv` file containing negat…EPSS 0.57%6.5CVE-2026-9150Opensuse libsolv stack-based buffer overflow vulnerabilityA flaw was found in libsolv. This stack-based buffer overflow vulnerability occurs in libsolv's Debian metadata parser when processing specially craf…EPSS 0.58%

Source: NIST National Vulnerability Database (record CVE-2021-44568), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.