CVE-2024-34027 (GCVE-0-2024-34027)
Vulnerability from cvelistv5 – Published: 2024-06-24 13:56 – Updated: 2026-08-05 11:29
VLAI
EPSS
VEX
Title
f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
Summary
In the Linux kernel, the following vulnerability has been resolved:
f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
It needs to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
to avoid racing with checkpoint, otherwise, filesystem metadata including
blkaddr in dnode, inode fields and .total_valid_block_count may be
corrupted after SPO case.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-05 14:50 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
7 references
Impacted products
4 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
ef8d563f184e1112651f2cbde383d43e599334e8 , < a6e1f7744e9b84f86a629a76024bba8468aa153b
(git)
Affected: ef8d563f184e1112651f2cbde383d43e599334e8 , < b5bac43875aa27ec032dbbb86173baae6dce6182 (git) Affected: ef8d563f184e1112651f2cbde383d43e599334e8 , < 5d47d63883735718825ca2efc4fca6915469774f (git) Affected: ef8d563f184e1112651f2cbde383d43e599334e8 , < 329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b (git) Affected: ef8d563f184e1112651f2cbde383d43e599334e8 , < 69136304fd144144a4828c7b7b149d0f80321ba4 (git) Affected: ef8d563f184e1112651f2cbde383d43e599334e8 , < 0a4ed2d97cb6d044196cc3e726b6699222b41019 (git) |
guessed | |
| Linux | Linux |
Affected:
5.8
Unaffected: 0 , < 5.8 (semver) Unaffected: 5.10.219 , ≤ 5.10.* (semver) Unaffected: 5.15.161 , ≤ 5.15.* (semver) Unaffected: 6.1.93 , ≤ 6.1.* (semver) Unaffected: 6.6.33 , ≤ 6.6.* (semver) Unaffected: 6.9.4 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix) |
guessed | |
| linux | linux_kernel |
Affected:
c75488fb4d82 , < a6e1f7744e9b
(git)
Affected: c75488fb4d82 , < b5bac43875aa (git) Affected: c75488fb4d82 , < 5d47d6388373 (git) Affected: c75488fb4d82 , < 329edb7c9e3b (git) Affected: c75488fb4d82 , < 69136304fd14 (git) Affected: c75488fb4d82 , < 0a4ed2d97cb6 (git) Affected: 5.8 Affected: 0 , < 5.8 (semver) Affected: 5.10.219 , ≤ 5.10* (semver) Affected: 6.1.93 , ≤ 6.1* (semver) Affected: 6.6.33 , ≤ 6.6* (semver) Affected: 6.94 , ≤ 6.9* (semver) Affected: 6.10 , ≤ * (semver) Affected: 5.15.161 , ≤ 5.15* (custom) cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
||
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"lessThan": "a6e1f7744e9b",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "b5bac43875aa",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "5d47d6388373",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "329edb7c9e3b",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "69136304fd14",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "0a4ed2d97cb6",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"status": "affected",
"version": "5.8"
},
{
"lessThan": "5.8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10*",
"status": "affected",
"version": "5.10.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1*",
"status": "affected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6*",
"status": "affected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9*",
"status": "affected",
"version": "6.94",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "affected",
"version": "6.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15*",
"status": "affected",
"version": "5.15.161",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2024-34027",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-05T14:50:20.784869Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-11-05T15:02:49.178Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-02T02:42:59.794Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/a6e1f7744e9b84f86a629a76024bba8468aa153b"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/b5bac43875aa27ec032dbbb86173baae6dce6182"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/5d47d63883735718825ca2efc4fca6915469774f"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/69136304fd144144a4828c7b7b149d0f80321ba4"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/0a4ed2d97cb6d044196cc3e726b6699222b41019"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T11:51:57.302Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
}
],
"x_adpType": "supplier"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/f2fs/file.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a6e1f7744e9b84f86a629a76024bba8468aa153b",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "b5bac43875aa27ec032dbbb86173baae6dce6182",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "5d47d63883735718825ca2efc4fca6915469774f",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "69136304fd144144a4828c7b7b149d0f80321ba4",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "0a4ed2d97cb6d044196cc3e726b6699222b41019",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/f2fs/file.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"lessThan": "5.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.161",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"version": "6.9.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.219",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.161",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.93",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.33",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.9.4",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.10",
"versionStartIncluding": "5.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock\n\nIt needs to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock\nto avoid racing with checkpoint, otherwise, filesystem metadata including\nblkaddr in dnode, inode fields and .total_valid_block_count may be\ncorrupted after SPO case."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached only through the `F2FS_IOC_RELEASE_COMPRESS_BLOCKS` / `F2FS_IOC_RESERVE_COMPRESS_BLOCKS` ioctls issued on a local file descriptor of a mounted f2fs volume. There is no remote or network-facing path into `f2fs_{release,reserve}_compress_blocks()`.\nAC:L - The attacker drives both sides of the race \u2014 one thread loops the compress-block ioctls while another loops unprivileged `syncfs()`, which calls `f2fs_sync_fs(sb, 1)` \u2192 `f2fs_issue_checkpoint()`, so the racing checkpoint is attacker-scheduled rather than incidental. Once won, the inconsistent metadata is written to persistent storage and stays there, and f2fs compression is broadly deployed (Android GKI enables `CONFIG_F2FS_FS_COMPRESSION`), so no condition outside the attacker\u0027s influence is needed to reach the corrupt state.\nPR:L - Both ioctls carry no `capable()` or `CAP_SYS_ADMIN` check \u2014 unlike the adjacent `F2FS_IOC_RESIZE_FS`/`GARBAGE_COLLECT` handlers \u2014 and setting `FS_COMPR_FL` requires only `inode_owner_or_capable`. Any unprivileged local user with a file on a rw-mounted compression-enabled f2fs volume can create a compressed file and invoke them.\nUI:N - The attacker operates entirely on a file it creates and owns on an already-mounted filesystem, in a self-contained two-thread loop. No action by any other user or administrator is required.\nS:U - The corruption is confined to the f2fs filesystem metadata managed by the same kernel security authority that hosts the vulnerable code. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The persisted mismatch between inode compress accounting (`i_blocks`, `i_compr_blocks`, `FI_COMPRESS_RELEASED`) and the dnode blkaddr layout means a compressed cluster can be decompressed using a block count that no longer matches its real extent, surfacing content of blocks outside the file \u2014 a cross-file disclosure on a shared volume, which is why the fs is flagged `SBI_NEED_FSCK` rather than merely losing space.\nI:H - An unprivileged user achieves persistent, unauthorized corruption of shared on-disk filesystem metadata \u2014 dnode block addresses, inode `i_blocks`/`i_compr_blocks`, and the volume-global `total_valid_block_count` \u2014 affecting the entire filesystem and not just the attacker\u0027s own file, repairable only by fsck.\nA:H - After the unclean mount, `f2fs_sanity_check_ckpt()` rejects the volume with \"Wrong valid_user_blocks\" (`-EFSCORRUPTED`), rendering an f2fs root or `/data` unmountable and the device unbootable; `dec_valid_block_count()`\u0027s `f2fs_bug_on(sbi, sbi-\u003etotal_valid_block_count \u003c count)` also yields a `BUG_ON` kernel panic under `CONFIG_F2FS_CHECK_FS`, with `SBI_NEED_FSCK`/forced read-only otherwise."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:29:52.924Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a6e1f7744e9b84f86a629a76024bba8468aa153b"
},
{
"url": "https://git.kernel.org/stable/c/b5bac43875aa27ec032dbbb86173baae6dce6182"
},
{
"url": "https://git.kernel.org/stable/c/5d47d63883735718825ca2efc4fca6915469774f"
},
{
"url": "https://git.kernel.org/stable/c/329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b"
},
{
"url": "https://git.kernel.org/stable/c/69136304fd144144a4828c7b7b149d0f80321ba4"
},
{
"url": "https://git.kernel.org/stable/c/0a4ed2d97cb6d044196cc3e726b6699222b41019"
}
],
"title": "f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-34027",
"datePublished": "2024-06-24T13:56:49.389Z",
"dateReserved": "2024-06-24T13:54:11.051Z",
"dateUpdated": "2026-08-05T11:29:52.924Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2024-34027",
"date": "2026-09-20",
"epss": "0.00237",
"percentile": "0.14991"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/f2fs/file.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a6e1f7744e9b84f86a629a76024bba8468aa153b",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "b5bac43875aa27ec032dbbb86173baae6dce6182",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "5d47d63883735718825ca2efc4fca6915469774f",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "69136304fd144144a4828c7b7b149d0f80321ba4",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "0a4ed2d97cb6d044196cc3e726b6699222b41019",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/f2fs/file.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"lessThan": "5.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.161",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"version": "6.9.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"affectedData": [
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"lessThan": "a6e1f7744e9b",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "b5bac43875aa",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "5d47d6388373",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "329edb7c9e3b",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "69136304fd14",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "0a4ed2d97cb6",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"status": "affected",
"version": "5.8"
},
{
"lessThan": "5.8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10*",
"status": "affected",
"version": "5.10.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1*",
"status": "affected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6*",
"status": "affected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9*",
"status": "affected",
"version": "6.94",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "affected",
"version": "6.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15*",
"status": "affected",
"version": "5.15.161",
"versionType": "custom"
}
]
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
},
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A3C0D860-7856-4982-83DA-17AFB1195E02",
"versionEndExcluding": "5.10.219",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "31130639-53FE-4726-8986-434EE2528CB2",
"versionEndExcluding": "5.15.161",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EEFB78EE-F990-4197-BF1C-156760A55667",
"versionEndExcluding": "6.1.93",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FCE796DF-3B50-4DC6-BAE5-95271068FC9E",
"versionEndExcluding": "6.6.33",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "991B9791-966A-4D18-9E8D-A8AB128E5627",
"versionEndExcluding": "6.9.4",
"versionStartIncluding": "6.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock\n\nIt needs to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock\nto avoid racing with checkpoint, otherwise, filesystem metadata including\nblkaddr in dnode, inode fields and .total_valid_block_count may be\ncorrupted after SPO case."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: compress: correcci\u00f3n para cubrir {reserve,release}_compress_blocks() con bloqueo cp_rwsem Necesita cubrir {reserve,release}_compress_blocks() con bloqueo cp_rwsem para evitar ejecuciones con el punto de control; de lo contrario, los metadatos del sistema de archivos, incluido blkaddr en dnode, los campos de inodo y .total_valid_block_count, pueden da\u00f1arse despu\u00e9s del caso SPO."
}
],
"id": "CVE-2024-34027",
"lastModified": "2026-08-04T11:17:51.513",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-34027",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-05T14:50:20.784869Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-06-24T14:15:11.887",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/0a4ed2d97cb6d044196cc3e726b6699222b41019"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/5d47d63883735718825ca2efc4fca6915469774f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/69136304fd144144a4828c7b7b149d0f80321ba4"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/a6e1f7744e9b84f86a629a76024bba8468aa153b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b5bac43875aa27ec032dbbb86173baae6dce6182"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/0a4ed2d97cb6d044196cc3e726b6699222b41019"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/5d47d63883735718825ca2efc4fca6915469774f"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/69136304fd144144a4828c7b7b149d0f80321ba4"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/a6e1f7744e9b84f86a629a76024bba8468aa153b"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b5bac43875aa27ec032dbbb86173baae6dce6182"
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T14:36:37+00:00",
"cve": "CVE-2024-34027",
"id": "CVE-2024-34027",
"initial_release_date": "2024-06-24T00:00:00+00:00",
"product_status:known_not_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-34027.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T02:42:59.794Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/a6e1f7744e9b84f86a629a76024bba8468aa153b"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/b5bac43875aa27ec032dbbb86173baae6dce6182"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/5d47d63883735718825ca2efc4fca6915469774f"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/69136304fd144144a4828c7b7b149d0f80321ba4"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/0a4ed2d97cb6d044196cc3e726b6699222b41019"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T11:51:57.302Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
}
],
"x_adpType": "supplier"
},
{
"affected": [
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"lessThan": "a6e1f7744e9b",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "b5bac43875aa",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "5d47d6388373",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "329edb7c9e3b",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "69136304fd14",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"lessThan": "0a4ed2d97cb6",
"status": "affected",
"version": "c75488fb4d82",
"versionType": "git"
},
{
"status": "affected",
"version": "5.8"
},
{
"lessThan": "5.8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10*",
"status": "affected",
"version": "5.10.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1*",
"status": "affected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6*",
"status": "affected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9*",
"status": "affected",
"version": "6.94",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "affected",
"version": "6.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15*",
"status": "affected",
"version": "5.15.161",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2024-34027",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-11-05T14:50:20.784869Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-06-25T13:24:40.353Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/f2fs/file.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "a6e1f7744e9b84f86a629a76024bba8468aa153b",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "b5bac43875aa27ec032dbbb86173baae6dce6182",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "5d47d63883735718825ca2efc4fca6915469774f",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "69136304fd144144a4828c7b7b149d0f80321ba4",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
},
{
"lessThan": "0a4ed2d97cb6d044196cc3e726b6699222b41019",
"status": "affected",
"version": "ef8d563f184e1112651f2cbde383d43e599334e8",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/f2fs/file.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.8"
},
{
"lessThan": "5.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.161",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"version": "6.9.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.219",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.161",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.93",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.33",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.9.4",
"versionStartIncluding": "5.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.10",
"versionStartIncluding": "5.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock\n\nIt needs to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock\nto avoid racing with checkpoint, otherwise, filesystem metadata including\nblkaddr in dnode, inode fields and .total_valid_block_count may be\ncorrupted after SPO case."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is reached only through the `F2FS_IOC_RELEASE_COMPRESS_BLOCKS` / `F2FS_IOC_RESERVE_COMPRESS_BLOCKS` ioctls issued on a local file descriptor of a mounted f2fs volume. There is no remote or network-facing path into `f2fs_{release,reserve}_compress_blocks()`.\nAC:L - The attacker drives both sides of the race \u2014 one thread loops the compress-block ioctls while another loops unprivileged `syncfs()`, which calls `f2fs_sync_fs(sb, 1)` \u2192 `f2fs_issue_checkpoint()`, so the racing checkpoint is attacker-scheduled rather than incidental. Once won, the inconsistent metadata is written to persistent storage and stays there, and f2fs compression is broadly deployed (Android GKI enables `CONFIG_F2FS_FS_COMPRESSION`), so no condition outside the attacker\u0027s influence is needed to reach the corrupt state.\nPR:L - Both ioctls carry no `capable()` or `CAP_SYS_ADMIN` check \u2014 unlike the adjacent `F2FS_IOC_RESIZE_FS`/`GARBAGE_COLLECT` handlers \u2014 and setting `FS_COMPR_FL` requires only `inode_owner_or_capable`. Any unprivileged local user with a file on a rw-mounted compression-enabled f2fs volume can create a compressed file and invoke them.\nUI:N - The attacker operates entirely on a file it creates and owns on an already-mounted filesystem, in a self-contained two-thread loop. No action by any other user or administrator is required.\nS:U - The corruption is confined to the f2fs filesystem metadata managed by the same kernel security authority that hosts the vulnerable code. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The persisted mismatch between inode compress accounting (`i_blocks`, `i_compr_blocks`, `FI_COMPRESS_RELEASED`) and the dnode blkaddr layout means a compressed cluster can be decompressed using a block count that no longer matches its real extent, surfacing content of blocks outside the file \u2014 a cross-file disclosure on a shared volume, which is why the fs is flagged `SBI_NEED_FSCK` rather than merely losing space.\nI:H - An unprivileged user achieves persistent, unauthorized corruption of shared on-disk filesystem metadata \u2014 dnode block addresses, inode `i_blocks`/`i_compr_blocks`, and the volume-global `total_valid_block_count` \u2014 affecting the entire filesystem and not just the attacker\u0027s own file, repairable only by fsck.\nA:H - After the unclean mount, `f2fs_sanity_check_ckpt()` rejects the volume with \"Wrong valid_user_blocks\" (`-EFSCORRUPTED`), rendering an f2fs root or `/data` unmountable and the device unbootable; `dec_valid_block_count()`\u0027s `f2fs_bug_on(sbi, sbi-\u003etotal_valid_block_count \u003c count)` also yields a `BUG_ON` kernel panic under `CONFIG_F2FS_CHECK_FS`, with `SBI_NEED_FSCK`/forced read-only otherwise."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:29:52.924Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a6e1f7744e9b84f86a629a76024bba8468aa153b"
},
{
"url": "https://git.kernel.org/stable/c/b5bac43875aa27ec032dbbb86173baae6dce6182"
},
{
"url": "https://git.kernel.org/stable/c/5d47d63883735718825ca2efc4fca6915469774f"
},
{
"url": "https://git.kernel.org/stable/c/329edb7c9e3b6ca27e6ca67ab1cdda1740fb3a2b"
},
{
"url": "https://git.kernel.org/stable/c/69136304fd144144a4828c7b7b149d0f80321ba4"
},
{
"url": "https://git.kernel.org/stable/c/0a4ed2d97cb6d044196cc3e726b6699222b41019"
}
],
"title": "f2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-34027",
"datePublished": "2024-06-24T13:56:49.389Z",
"dateReserved": "2024-06-24T13:54:11.051Z",
"dateUpdated": "2026-08-05T11:29:52.924Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…