Show plain JSON{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47119", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-04T18:12:48.838Z", "datePublished": "2024-03-15T20:14:25.901Z", "dateUpdated": "2025-05-04T07:04:31.455Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:04:31.455Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leak in ext4_fill_super\n\nBuffer head references must be released before calling kill_bdev();\notherwise the buffer head (and its page referenced by b_data) will not\nbe freed by kill_bdev, and subsequently that bh will be leaked.\n\nIf blocksizes differ, sb_set_blocksize() will kill current buffers and\npage cache by using kill_bdev(). And then super block will be reread\nagain but using correct blocksize this time. sb_set_blocksize() didn't\nfully free superblock page and buffer head, and being busy, they were\nnot freed and instead leaked.\n\nThis can easily be reproduced by calling an infinite loop of:\n\n systemctl start <ext4_on_lvm>.mount, and\n systemctl stop <ext4_on_lvm>.mount\n\n... since systemd creates a cgroup for each slice which it mounts, and\nthe bh leak get amplified by a dying memory cgroup that also never\ngets freed, and memory consumption is much more easily noticed."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/super.c"], "versions": [{"version": "ac27a0ec112a089f1a5102bc8dffc79c8c815571", "lessThan": "01d349a481f0591230300a9171330136f9159bcd", "status": "affected", "versionType": "git"}, {"version": "ac27a0ec112a089f1a5102bc8dffc79c8c815571", "lessThan": "1385b23396d511d5233b8b921ac3058b3f86a5e1", "status": "affected", "versionType": "git"}, {"version": "ac27a0ec112a089f1a5102bc8dffc79c8c815571", "lessThan": "afd09b617db3786b6ef3dc43e28fe728cfea84df", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/super.c"], "versions": [{"version": "2.6.19", "status": "affected"}, {"version": "0", "lessThan": "2.6.19", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.43", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.10", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.10.43"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.12.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.19", "versionEndExcluding": "5.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/01d349a481f0591230300a9171330136f9159bcd"}, {"url": "https://git.kernel.org/stable/c/1385b23396d511d5233b8b921ac3058b3f86a5e1"}, {"url": "https://git.kernel.org/stable/c/afd09b617db3786b6ef3dc43e28fe728cfea84df"}], "title": "ext4: fix memory leak in ext4_fill_super", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-07-23T13:37:32.763549Z", "id": "CVE-2021-47119", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-23T13:37:45.432Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.956Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/01d349a481f0591230300a9171330136f9159bcd", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/1385b23396d511d5233b8b921ac3058b3f86a5e1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/afd09b617db3786b6ef3dc43e28fe728cfea84df", "tags": ["x_transferred"]}]}]}}