164 lines
8.0 KiB
JSON
164 lines
8.0 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-38220",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-04-16T04:51:23.995Z",
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"datePublished": "2025-07-04T13:37:36.612Z",
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"dateUpdated": "2026-05-11T21:23:33.613Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T21:23:33.613Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: only dirty folios when data journaling regular files\n\nfstest generic/388 occasionally reproduces a crash that looks as\nfollows:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000000\n...\nCall Trace:\n <TASK>\n ext4_block_zero_page_range+0x30c/0x380 [ext4]\n ext4_truncate+0x436/0x440 [ext4]\n ext4_process_orphan+0x5d/0x110 [ext4]\n ext4_orphan_cleanup+0x124/0x4f0 [ext4]\n ext4_fill_super+0x262d/0x3110 [ext4]\n get_tree_bdev_flags+0x132/0x1d0\n vfs_get_tree+0x26/0xd0\n vfs_cmd_create+0x59/0xe0\n __do_sys_fsconfig+0x4ed/0x6b0\n do_syscall_64+0x82/0x170\n ...\n\nThis occurs when processing a symlink inode from the orphan list. The\npartial block zeroing code in the truncate path calls\next4_dirty_journalled_data() -> folio_mark_dirty(). The latter calls\nmapping->a_ops->dirty_folio(), but symlink inodes are not assigned an\na_ops vector in ext4, hence the crash.\n\nTo avoid this problem, update the ext4_dirty_journalled_data() helper to\nonly mark the folio dirty on regular files (for which a_ops is\nassigned). This also matches the journaling logic in the ext4_symlink()\ncreation path, where ext4_handle_dirty_metadata() is called directly."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ext4/inode.c"
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],
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"versions": [
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{
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"version": "d84c9ebdac1e39bc7b036c0c829ee8c1956edabc",
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"lessThan": "cf6a4c4ac7b6e3214f25df594c9689a62f1bb456",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d84c9ebdac1e39bc7b036c0c829ee8c1956edabc",
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"lessThan": "be5f3061a6f904e3674257879e71881ceee5b673",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d84c9ebdac1e39bc7b036c0c829ee8c1956edabc",
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"lessThan": "d7af6eee8cd60f55aa8c5fe2b91f11ec0c9a0f27",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d84c9ebdac1e39bc7b036c0c829ee8c1956edabc",
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"lessThan": "e26268ff1dcae5662c1b96c35f18cfa6ab73d9de",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ext4/inode.c"
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],
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"versions": [
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{
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"version": "6.4",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.4",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.95",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.35",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.15.4",
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"lessThanOrEqual": "6.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.16",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.4",
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"versionEndExcluding": "6.6.95"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.4",
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"versionEndExcluding": "6.12.35"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.4",
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"versionEndExcluding": "6.15.4"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.4",
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"versionEndExcluding": "6.16"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/cf6a4c4ac7b6e3214f25df594c9689a62f1bb456"
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},
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{
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"url": "https://git.kernel.org/stable/c/be5f3061a6f904e3674257879e71881ceee5b673"
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},
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{
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"url": "https://git.kernel.org/stable/c/d7af6eee8cd60f55aa8c5fe2b91f11ec0c9a0f27"
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},
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{
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"url": "https://git.kernel.org/stable/c/e26268ff1dcae5662c1b96c35f18cfa6ab73d9de"
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}
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],
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"title": "ext4: only dirty folios when data journaling regular files",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |