High severity7.5NVD Advisory· Published Oct 6, 2022· Updated Jun 17, 2026
CVE-2022-41556
CVE-2022-41556
Description
A resource leak in gw_backend.c in lighttpd 1.4.56 through 1.4.66 could lead to a denial of service (connection-slot exhaustion) after a large amount of anomalous TCP behavior by clients. It is related to RDHUP mishandling in certain HTTP/1.1 chunked situations. Use of mod_fastcgi is, for example, affected. This is fixed in 1.4.67.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- osv-coords5 versionspkg:rpm/opensuse/lighttpd&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/lighttpd&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/lighttpd&distro=openSUSE%20Tumbleweedpkg:rpm/suse/lighttpd&distro=SUSE%20Package%20Hub%2015%20SP3pkg:rpm/suse/lighttpd&distro=SUSE%20Package%20Hub%2015%20SP4
< 1.4.67-bp154.2.6.1+ 4 more
- (no CPE)range: < 1.4.67-bp154.2.6.1
- (no CPE)range: < 1.4.67-bp154.2.6.1
- (no CPE)range: < 1.4.67-2.1
- (no CPE)range: < 1.4.67-bp154.2.6.1
- (no CPE)range: < 1.4.67-bp154.2.6.1
Patches
Vulnerability mechanics
References
5- git.lighttpd.net/lighttpd/lighttpd1.4/commit/b18de6f9264f914f7bf493abd3b6059343548e50nvdPatchThird Party Advisory
- github.com/lighttpd/lighttpd1.4/pull/115nvdExploitIssue TrackingThird Party Advisory
- github.com/lighttpd/lighttpd1.4/compare/lighttpd-1.4.66...lighttpd-1.4.67nvdThird Party Advisory
- security.gentoo.org/glsa/202210-12nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OVOSBSCMLGCHH2Z74H64ZWVDFJFQTBC2/nvd
News mentions
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