FKIE_CVE-2026-64160
Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-07-20 15:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfs: Fix potential for tearing in ->remote_i_size and ->zero_point
Fix potential tearing in using ->remote_i_size and ->zero_point by copying
i_size_read() and i_size_write() and using the same seqcount as for i_size.
We need to make sure that netfslib and the filesystems that use it always
hold i_lock whilst updating any of the sizes to prevent i_size_seqcount
from getting corrupted.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/9p/v9fs_vfs.h",
"fs/9p/vfs_inode.c",
"fs/9p/vfs_inode_dotl.c",
"fs/afs/file.c",
"fs/afs/inode.c",
"fs/afs/internal.h",
"fs/afs/write.c",
"fs/netfs/buffered_read.c",
"fs/netfs/buffered_write.c",
"fs/netfs/direct_write.c",
"fs/netfs/misc.c",
"fs/netfs/write_collect.c",
"fs/smb/client/cifsfs.c",
"fs/smb/client/cifssmb.c",
"fs/smb/client/file.c",
"fs/smb/client/inode.c",
"fs/smb/client/readdir.c",
"fs/smb/client/smb2ops.c",
"fs/smb/client/smb2pdu.c",
"include/linux/netfs.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "55970f238d495517edc961d55c44c772594d0969",
"status": "affected",
"version": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
"versionType": "git"
},
{
"lessThan": "2c8f4742bb76117d735f92a3932d85239b16c494",
"status": "affected",
"version": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/9p/v9fs_vfs.h",
"fs/9p/vfs_inode.c",
"fs/9p/vfs_inode_dotl.c",
"fs/afs/file.c",
"fs/afs/inode.c",
"fs/afs/internal.h",
"fs/afs/write.c",
"fs/netfs/buffered_read.c",
"fs/netfs/buffered_write.c",
"fs/netfs/direct_write.c",
"fs/netfs/misc.c",
"fs/netfs/write_collect.c",
"fs/smb/client/cifsfs.c",
"fs/smb/client/cifssmb.c",
"fs/smb/client/file.c",
"fs/smb/client/inode.c",
"fs/smb/client/readdir.c",
"fs/smb/client/smb2ops.c",
"fs/smb/client/smb2pdu.c",
"include/linux/netfs.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"lessThan": "5.18",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix potential for tearing in -\u003eremote_i_size and -\u003ezero_point\n\nFix potential tearing in using -\u003eremote_i_size and -\u003ezero_point by copying\ni_size_read() and i_size_write() and using the same seqcount as for i_size.\n\nWe need to make sure that netfslib and the filesystems that use it always\nhold i_lock whilst updating any of the sizes to prevent i_size_seqcount\nfrom getting corrupted."
}
],
"id": "CVE-2026-64160",
"lastModified": "2026-07-20T15:17:13.057",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-07-19T16:17:58.010",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/55970f238d495517edc961d55c44c772594d0969"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
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…
Loading…