177 lines
8.9 KiB
JSON
177 lines
8.9 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-2024-47680",
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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": "2024-09-30T16:00:12.940Z",
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"datePublished": "2024-10-21T11:53:23.128Z",
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"dateUpdated": "2026-05-11T20:38:40.855Z"
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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": "2026-05-11T20:38:40.855Z"
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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\nf2fs: check discard support for conventional zones\n\nAs the helper function f2fs_bdev_support_discard() shows, f2fs checks if\nthe target block devices support discard by calling\nbdev_max_discard_sectors() and bdev_is_zoned(). This check works well\nfor most cases, but it does not work for conventional zones on zoned\nblock devices. F2fs assumes that zoned block devices support discard,\nand calls __submit_discard_cmd(). When __submit_discard_cmd() is called\nfor sequential write required zones, it works fine since\n__submit_discard_cmd() issues zone reset commands instead of discard\ncommands. However, when __submit_discard_cmd() is called for\nconventional zones, __blkdev_issue_discard() is called even when the\ndevices do not support discard.\n\nThe inappropriate __blkdev_issue_discard() call was not a problem before\nthe commit 30f1e7241422 (\"block: move discard checks into the ioctl\nhandler\") because __blkdev_issue_discard() checked if the target devices\nsupport discard or not. If not, it returned EOPNOTSUPP. After the\ncommit, __blkdev_issue_discard() no longer checks it. It always returns\nzero and sets NULL to the given bio pointer. This NULL pointer triggers\nf2fs_bug_on() in __submit_discard_cmd(). The BUG is recreated with the\ncommands below at the umount step, where /dev/nullb0 is a zoned null_blk\nwith 5GB total size, 128MB zone size and 10 conventional zones.\n\n$ mkfs.f2fs -f -m /dev/nullb0\n$ mount /dev/nullb0 /mnt\n$ for ((i=0;i<5;i++)); do dd if=/dev/zero of=/mnt/test bs=65536 count=1600 conv=fsync; done\n$ umount /mnt\n\nTo fix the BUG, avoid the inappropriate __blkdev_issue_discard() call.\nWhen discard is requested for conventional zones, check if the device\nsupports discard or not. If not, return EOPNOTSUPP."
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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/f2fs/segment.c"
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],
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"versions": [
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{
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"version": "30f1e724142242a453f92d90b33e030014900bf0",
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"lessThan": "7bd7ce68ddad5a28565e42ef21cacaff113773a9",
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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": "30f1e724142242a453f92d90b33e030014900bf0",
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"lessThan": "d2352b57897f6a3349666fc318dcbec99092c6a5",
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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": "30f1e724142242a453f92d90b33e030014900bf0",
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"lessThan": "43aec4d01bd2ce961817a777b3846f8318f398e4",
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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/f2fs/segment.c"
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],
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"versions": [
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{
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"version": "6.10",
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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": "6.10",
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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": "6.10.13",
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"lessThanOrEqual": "6.10.*",
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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": "6.11.2",
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"lessThanOrEqual": "6.11.*",
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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",
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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": "6.10",
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"versionEndExcluding": "6.10.13"
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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": "6.10",
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"versionEndExcluding": "6.11.2"
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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": "6.10",
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"versionEndExcluding": "6.12"
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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/7bd7ce68ddad5a28565e42ef21cacaff113773a9"
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},
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{
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"url": "https://git.kernel.org/stable/c/d2352b57897f6a3349666fc318dcbec99092c6a5"
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},
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{
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"url": "https://git.kernel.org/stable/c/43aec4d01bd2ce961817a777b3846f8318f398e4"
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}
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],
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"title": "f2fs: check discard support for conventional zones",
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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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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-47680",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2024-10-21T13:07:25.799925Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-10-21T13:14:16.790Z"
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}
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}
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]
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}
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} |