Critical severity9.8NVD Advisory· Published Aug 12, 2021· Updated Jun 17, 2026
CVE-2021-20314
CVE-2021-20314
Description
Stack buffer overflow in libspf2 versions below 1.2.11 when processing certain SPF macros can lead to Denial of service and potentially code execution via malicious crafted SPF explanation messages.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
13cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- libspf2/libspf2description
- osv-coords6 versionspkg:rpm/opensuse/libspf2&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/libspf2&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/libspf2&distro=openSUSE%20Tumbleweedpkg:rpm/suse/libspf2&distro=SUSE%20Package%20Hub%2015%20SP1pkg:rpm/suse/libspf2&distro=SUSE%20Package%20Hub%2015%20SP2pkg:rpm/suse/libspf2&distro=SUSE%20Package%20Hub%2015%20SP3
< 1.2.10-bp153.5.1+ 5 more
- (no CPE)range: < 1.2.10-bp153.5.1
- (no CPE)range: < 1.2.10-bp153.5.1
- (no CPE)range: < 0.01-5.3
- (no CPE)range: < 1.2.10-bp153.5.1
- (no CPE)range: < 1.2.10-bp153.5.1
- (no CPE)range: < 1.2.10-bp153.5.1
Patches
Vulnerability mechanics
References
5- bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMSFT2NJDZ7PATRZSQPAOGSE7JD6ELOB/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJRHPE5OSCPTNA3ZZ4ORDHT4JQH3Y4/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y6T4HYXXSUQCGJB2ES6X7Q74YYF7V7XU/nvd
- security.gentoo.org/glsa/202401-22nvd
News mentions
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