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[SECURITY] [DLA 4258-1] libfastjson security update

🗓️ 28 Jul 2025 16:29:51Reported by DebianType 
debian
 debian🔗 lists.debian.org👁 8 Views

Security update for libfastjson addresses out-of-bounds write issue in JSON parsing

Related
Packages
ReporterTitlePublishedViews
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IBM Security Bulletins		Security Bulletin: IBM MQ is affected by a vulnerability in json-c (CVE-2020-12762)
18 Dec 202014:05
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IBM Security Bulletins		Security Bulletin: A vulnerability in json-c may affect IBM Robotic Process Automation for Cloud Pak and result in arbitrary code execution (CVE-2020-12762).
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FreeBSD		json-c -- integer overflow and out-of-bounds write via a large JSON file
2 May 202000:00
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Tenable Nessus		Amazon Linux 2023 : libfastjson, libfastjson-devel (ALAS2023-2023-205)
8 Jun 202300:00
–nessus
Tenable Nessus		Amazon Linux 2023 : json-c, json-c-devel (ALAS2023-2023-232)
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Tenable Nessus		Amazon Linux 2 : json-c (ALAS-2020-1442)
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Tenable Nessus		Amazon Linux 2 : libfastjson (ALAS-2023-2079)
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OSOS VersionArchitecturePackagePackage VersionFilename
Debian11anylibfastjson0.99.9-1+deb11u1libfastjson_0.99.9-1+deb11u1_any.deb
Debian11amd64libfastjson-dev0.99.9-1+deb11u1libfastjson-dev_0.99.9-1+deb11u1_amd64.deb
Debian11arm64libfastjson-dev0.99.9-1+deb11u1libfastjson-dev_0.99.9-1+deb11u1_arm64.deb
Debian11armhflibfastjson-dev0.99.9-1+deb11u1libfastjson-dev_0.99.9-1+deb11u1_armhf.deb
Debian11i386libfastjson-dev0.99.9-1+deb11u1libfastjson-dev_0.99.9-1+deb11u1_i386.deb
Debian11amd64libfastjson40.99.9-1+deb11u1libfastjson4_0.99.9-1+deb11u1_amd64.deb
Debian11arm64libfastjson40.99.9-1+deb11u1libfastjson4_0.99.9-1+deb11u1_arm64.deb
Debian11armhflibfastjson40.99.9-1+deb11u1libfastjson4_0.99.9-1+deb11u1_armhf.deb
Debian11i386libfastjson40.99.9-1+deb11u1libfastjson4_0.99.9-1+deb11u1_i386.deb
Debian11amd64libfastjson4-dbgsym0.99.9-1+deb11u1libfastjson4-dbgsym_0.99.9-1+deb11u1_amd64.deb
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28 Jul 2025 16:29Current
7High risk
Vulners AI Score7
CVSS 26.8
CVSS 3.17.8
EPSS0.01888
SSVC
libfastjson security updateout-of-bounds writejson parsingdebian 11 bullseyecve-2020-12762
8