{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53796", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-08T23:58:35.275Z", "datePublished": "2025-12-09T00:00:52.919Z", "dateUpdated": "2026-05-11T19:51:41.550Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:51:41.550Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix information leak in f2fs_move_inline_dirents()\n\nWhen converting an inline directory to a regular one, f2fs is leaking\nuninitialized memory to disk because it doesn't initialize the entire\ndirectory block. Fix this by zero-initializing the block.\n\nThis bug was introduced by commit 4ec17d688d74 (\"f2fs: avoid unneeded\ninitializing when converting inline dentry\"), which didn't consider the\nsecurity implications of leaking uninitialized memory to disk.\n\nThis was found by running xfstest generic/435 on a KMSAN-enabled kernel."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/inline.c"], "versions": [{"version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca", "lessThan": "4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7", "status": "affected", "versionType": "git"}, {"version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca", "lessThan": "a6807ef0f3b3d8508d3b07a2e35de8a91820a014", "status": "affected", "versionType": "git"}, {"version": "4ec17d688d74b6b7cb10043c57ff4818cde2b0ca", "lessThan": "2bef8314fcf94ddc27e22d03f237c0fafd00de33", "status": "affected", 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"versions": [{"version": "4.3", "status": "affected"}, {"version": "0", "lessThan": "4.3", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.308", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.276", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.235", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.173", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.99", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.16", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.3", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": 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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix information leak in f2fs_move_inline_dirents()\n\nWhen converting an inline directory to a regular one, f2fs is leaking\nuninitialized memory to disk because it doesn't initialize the entire\ndirectory block. Fix this by zero-initializing the block.\n\nThis bug was introduced by commit 4ec17d688d74 (\"f2fs: avoid unneeded\ninitializing when converting inline dentry\"), which didn't consider the\nsecurity implications of leaking uninitialized memory to disk.\n\nThis was found by running xfstest generic/435 on a KMSAN-enabled kernel."}], "id": "CVE-2023-53796", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-09T01:16:51.200", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/00b5587326625d0fddb2a5f5a3d4acd950102ace"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/117d4f6687b1f74423b5d398ea95c63b262a8e73"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2bef8314fcf94ddc27e22d03f237c0fafd00de33"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4e3b4b170bd43db1d8a93a6bd0ea434b17cc86f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9a5571cff4ffcfc24847df9fd545cc5799ac0ee5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a6807ef0f3b3d8508d3b07a2e35de8a91820a014"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eebaecef0095bb8f493c03982da75c6e7bae1056"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f07a8d61b6ea81bb3cbe0638af40f8824d6147fd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: f2fs: fix information leak in f2fs_move_inline_dirents()", "id": "2420296", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2420296"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nf2fs: fix information leak in f2fs_move_inline_dirents()\nWhen converting an inline directory to a regular one, f2fs is leaking\nuninitialized memory to disk because it doesn't initialize the entire\ndirectory block. Fix this by zero-initializing the block.\nThis bug was introduced by commit 4ec17d688d74 (\"f2fs: avoid unneeded\ninitializing when converting inline dentry\"), which didn't consider the\nsecurity implications of leaking uninitialized memory to disk.\nThis was found by running xfstest generic/435 on a KMSAN-enabled kernel."], "name": "CVE-2023-53796", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53796\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53796\nhttps://lore.kernel.org/linux-cve-announce/2025120941-CVE-2023-53796-4092@gregkh/T"], "threat_severity": "Moderate"}

{}