165 lines
9.3 KiB
JSON
165 lines
9.3 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-2022-49068",
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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": "2025-02-26T01:49:39.244Z",
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"datePublished": "2025-02-26T01:54:35.340Z",
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"dateUpdated": "2026-05-23T15:21:30.120Z"
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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": "2026-05-23T15:21:30.120Z"
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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\nbtrfs: release correct delalloc amount in direct IO write path\n\nRunning generic/406 causes the following WARNING in btrfs_destroy_inode()\nwhich tells there are outstanding extents left.\n\nIn btrfs_get_blocks_direct_write(), we reserve a temporary outstanding\nextents with btrfs_delalloc_reserve_metadata() (or indirectly from\nbtrfs_delalloc_reserve_space(()). We then release the outstanding extents\nwith btrfs_delalloc_release_extents(). However, the \"len\" can be modified\nin the COW case, which releases fewer outstanding extents than expected.\n\nFix it by calling btrfs_delalloc_release_extents() for the original length.\n\nTo reproduce the warning, the filesystem should be 1 GiB. It's\ntriggering a short-write, due to not being able to allocate a large\nextent and instead allocating a smaller one.\n\n WARNING: CPU: 0 PID: 757 at fs/btrfs/inode.c:8848 btrfs_destroy_inode+0x1e6/0x210 [btrfs]\n Modules linked in: btrfs blake2b_generic xor lzo_compress\n lzo_decompress raid6_pq zstd zstd_decompress zstd_compress xxhash zram\n zsmalloc\n CPU: 0 PID: 757 Comm: umount Not tainted 5.17.0-rc8+ #101\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS d55cb5a 04/01/2014\n RIP: 0010:btrfs_destroy_inode+0x1e6/0x210 [btrfs]\n RSP: 0018:ffffc9000327bda8 EFLAGS: 00010206\n RAX: 0000000000000000 RBX: ffff888100548b78 RCX: 0000000000000000\n RDX: 0000000000026900 RSI: 0000000000000000 RDI: ffff888100548b78\n RBP: ffff888100548940 R08: 0000000000000000 R09: ffff88810b48aba8\n R10: 0000000000000001 R11: ffff8881004eb240 R12: ffff88810b48a800\n R13: ffff88810b48ec08 R14: ffff88810b48ed00 R15: ffff888100490c68\n FS: 00007f8549ea0b80(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007f854a09e733 CR3: 000000010a2e9003 CR4: 0000000000370eb0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n <TASK>\n destroy_inode+0x33/0x70\n dispose_list+0x43/0x60\n evict_inodes+0x161/0x1b0\n generic_shutdown_super+0x2d/0x110\n kill_anon_super+0xf/0x20\n btrfs_kill_super+0xd/0x20 [btrfs]\n deactivate_locked_super+0x27/0x90\n cleanup_mnt+0x12c/0x180\n task_work_run+0x54/0x80\n exit_to_user_mode_prepare+0x152/0x160\n syscall_exit_to_user_mode+0x12/0x30\n do_syscall_64+0x42/0x80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n RIP: 0033:0x7f854a000fb7"
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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/btrfs/inode.c"
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],
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"versions": [
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{
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"version": "5afd80c393f4e87451f14eefb7f2f24daf434e06",
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"lessThan": "07cacfd9d9dc134557ac8866c73d570a59b3d1f3",
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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": "f0bfa76a11e93d0fe2c896fcb566568c5e8b5d3f",
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"lessThan": "a04d37ddfe4be431b9e52e8504490376ab0a39a4",
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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": "f0bfa76a11e93d0fe2c896fcb566568c5e8b5d3f",
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"lessThan": "6d82ad13c4110e73c7b0392f00534a1502a1b520",
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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": "96f1be29492d9e2fb97bb27f824478ab8cd3ab86",
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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": "5.15.27",
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"lessThan": "5.15.35",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.16.13",
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"lessThan": "5.17",
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"status": "affected",
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"versionType": "semver"
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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/btrfs/inode.c"
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],
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"versions": [
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{
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"version": "5.17",
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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": "5.17",
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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": "5.15.35",
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"lessThanOrEqual": "5.15.*",
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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": "5.17.4",
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"lessThanOrEqual": "5.17.*",
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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": "5.18",
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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": "5.15.27",
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"versionEndExcluding": "5.15.35"
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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": "5.17",
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"versionEndExcluding": "5.17.4"
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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": "5.17",
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"versionEndExcluding": "5.18"
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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": "5.16.13"
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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/07cacfd9d9dc134557ac8866c73d570a59b3d1f3"
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},
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{
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"url": "https://git.kernel.org/stable/c/a04d37ddfe4be431b9e52e8504490376ab0a39a4"
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},
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{
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"url": "https://git.kernel.org/stable/c/6d82ad13c4110e73c7b0392f00534a1502a1b520"
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}
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],
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"title": "btrfs: release correct delalloc amount in direct IO write path",
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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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} |