{"api_version":"1","generated_at":"2026-04-22T23:51:52+00:00","cve":"CVE-2020-12655","urls":{"html":"https://cve.report/CVE-2020-12655","api":"https://cve.report/api/cve/CVE-2020-12655.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-12655","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-12655"},"summary":{"title":"CVE-2020-12655","description":"An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2020-05-05 06:15:00","updated_at":"2023-11-07 03:15:00"},"problem_types":["CWE-835"],"metrics":[],"references":[{"url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html","name":"[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 2420-2] linux regression update","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IO5XIQSRI747P4RVVTNX7TUPEOCF4OPU/","name":"FEDORA-2020-5a69decc0c","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 30 Update: kernel-5.6.13-100.fc30 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html","name":"[debian-lts-announce] 20200812 [SECURITY] [DLA 2323-1] linux-4.19 new package","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 2323-1] linux-4.19 new package","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/4483-1/","name":"USN-4483-1","refsource":"UBUNTU","tags":[],"title":"USN-4483-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IO5XIQSRI747P4RVVTNX7TUPEOCF4OPU/","name":"FEDORA-2020-5a69decc0c","refsource":"","tags":[],"title":"[SECURITY] Fedora 30 Update: kernel-5.6.13-100.fc30 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/torvalds/linux/commit/d0c7feaf87678371c2c09b3709400be416b2dc62","name":"https://github.com/torvalds/linux/commit/d0c7feaf87678371c2c09b3709400be416b2dc62","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"xfs: add agf freeblocks verify in xfs_agf_verify · torvalds/linux@d0c7fea · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://security.netapp.com/advisory/ntap-20200608-0001/","name":"https://security.netapp.com/advisory/ntap-20200608-0001/","refsource":"CONFIRM","tags":[],"title":"May 2020 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lore.kernel.org/linux-xfs/20200221153803.GP9506%40magnolia/","name":"https://lore.kernel.org/linux-xfs/20200221153803.GP9506%40magnolia/","refsource":"","tags":[],"title":"Re: [PATCH v3] xfs: add agf freeblocks verify in xfs_agf_verify - Darrick J. Wong","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IZ2X3TM6RGRUS3KZAS26IJO5XGU7TBBR/","name":"FEDORA-2020-4336d63533","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 32 Update: kernel-5.6.13-300.fc32 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ES5C6ZCMALBEBMKNNCTBSLLSYGFZG3FF/","name":"FEDORA-2020-c6b9fff7f8","refsource":"FEDORA","tags":[],"title":"[SECURITY] Fedora 31 Update: kernel-5.6.13-200.fc31 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZ2X3TM6RGRUS3KZAS26IJO5XGU7TBBR/","name":"FEDORA-2020-4336d63533","refsource":"","tags":[],"title":"[SECURITY] Fedora 32 Update: kernel-5.6.13-300.fc32 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html","name":"[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 2420-1] linux security update","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ES5C6ZCMALBEBMKNNCTBSLLSYGFZG3FF/","name":"FEDORA-2020-c6b9fff7f8","refsource":"","tags":[],"title":"[SECURITY] Fedora 31 Update: kernel-5.6.13-200.fc31 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/4465-1/","name":"USN-4465-1","refsource":"UBUNTU","tags":[],"title":"USN-4465-1: linux kernel vulnerabilities | Ubuntu security notices | Ubuntu","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/4485-1/","name":"USN-4485-1","refsource":"UBUNTU","tags":[],"title":"USN-4485-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0c7feaf87678371c2c09b3709400be416b2dc62","name":"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0c7feaf87678371c2c09b3709400be416b2dc62","refsource":"MISC","tags":["Patch","Vendor Advisory"],"title":"kernel/git/torvalds/linux.git - Linux kernel source tree","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lore.kernel.org/linux-xfs/20200221153803.GP9506@magnolia/","name":"https://lore.kernel.org/linux-xfs/20200221153803.GP9506@magnolia/","refsource":"MISC","tags":["Vendor Advisory"],"title":"Re: [PATCH v3] xfs: add agf freeblocks verify in xfs_agf_verify - Darrick J. Wong","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html","name":"openSUSE-SU-2020:0801","refsource":"SUSE","tags":[],"title":"[security-announce] openSUSE-SU-2020:0801-1: important: Security update","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-12655","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-12655","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"12655","vulnerable":"1","versionEndIncluding":"5.6.10","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2020-12655","qid":"159684","title":"Oracle Enterprise Linux Security Update for kernel (ELSA-2020-4431)"},{"cve":"CVE-2020-12655","qid":"160190","title":"Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2022-9969)"},{"cve":"CVE-2020-12655","qid":"352342","title":"Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2020-026"},{"cve":"CVE-2020-12655","qid":"352343","title":"Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2020-025"},{"cve":"CVE-2020-12655","qid":"751451","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:3935-1)"},{"cve":"CVE-2020-12655","qid":"900078","title":"CBL-Mariner Linux Security Update for kernel 5.4.91"},{"cve":"CVE-2020-12655","qid":"903388","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (1928)"},{"cve":"CVE-2020-12655","qid":"905781","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (1928-1)"},{"cve":"CVE-2020-12655","qid":"940256","title":"AlmaLinux Security Update for kernel (ALSA-2020:4431)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2020-12655","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://lore.kernel.org/linux-xfs/20200221153803.GP9506@magnolia/","refsource":"MISC","name":"https://lore.kernel.org/linux-xfs/20200221153803.GP9506@magnolia/"},{"url":"https://github.com/torvalds/linux/commit/d0c7feaf87678371c2c09b3709400be416b2dc62","refsource":"MISC","name":"https://github.com/torvalds/linux/commit/d0c7feaf87678371c2c09b3709400be416b2dc62"},{"url":"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0c7feaf87678371c2c09b3709400be416b2dc62","refsource":"MISC","name":"https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0c7feaf87678371c2c09b3709400be416b2dc62"},{"refsource":"FEDORA","name":"FEDORA-2020-c6b9fff7f8","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ES5C6ZCMALBEBMKNNCTBSLLSYGFZG3FF/"},{"refsource":"FEDORA","name":"FEDORA-2020-5a69decc0c","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IO5XIQSRI747P4RVVTNX7TUPEOCF4OPU/"},{"refsource":"FEDORA","name":"FEDORA-2020-4336d63533","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IZ2X3TM6RGRUS3KZAS26IJO5XGU7TBBR/"},{"refsource":"CONFIRM","name":"https://security.netapp.com/advisory/ntap-20200608-0001/","url":"https://security.netapp.com/advisory/ntap-20200608-0001/"},{"refsource":"SUSE","name":"openSUSE-SU-2020:0801","url":"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html"},{"refsource":"MLIST","name":"[debian-lts-announce] 20200812 [SECURITY] [DLA 2323-1] linux-4.19 new package","url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html"},{"refsource":"UBUNTU","name":"USN-4465-1","url":"https://usn.ubuntu.com/4465-1/"},{"refsource":"UBUNTU","name":"USN-4483-1","url":"https://usn.ubuntu.com/4483-1/"},{"refsource":"UBUNTU","name":"USN-4485-1","url":"https://usn.ubuntu.com/4485-1/"},{"refsource":"MLIST","name":"[debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"},{"refsource":"MLIST","name":"[debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"}]}},"nvd":{"publishedDate":"2020-05-05 06:15:00","lastModifiedDate":"2023-11-07 03:15:00","problem_types":["CWE-835"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":1.8,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:N/I:N/A:P","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":2.1},"severity":"LOW","exploitabilityScore":3.9,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndIncluding":"5.6.10","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"12655","Ordinal":"173821","Title":"CVE-2020-12655","CVE":"CVE-2020-12655","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"12655","Ordinal":"1","NoteData":"An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"12655","Ordinal":"2","NoteData":"2020-05-05","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"12655","Ordinal":"3","NoteData":"2020-10-31","Type":"Other","Title":"Modified"}]}}}