udf: Mark LVID buffer as uptodate before marking it dirty
In the Linux kernel, the following vulnerability has been resolved: udf: Mark LVID buffer as uptodate before marking it dirty When an I/O error occurs while writing the Logical Volume Integrity Descriptor (LVID) buffer to the block device, the block layer's completion handler (`end_buffer_write_sync()`) clears the `BH_Uptodate` flag on the buffer. However, the buffer still contains valid LVID data in memory. If the filesystem is subsequently remounted read-write or synced, `udf_open_lvid()` or `udf_sync_fs()` will modify the LVID buffer and call `mark_buffer_dirty()`. This triggers a spurious `WARN_ON_ONCE(!buffer_uptodate(bh))` warning in `mark_buffer_dirty()` because the buffer is not marked uptodate, even though its in-memory contents are valid and are about to be overwritten. To prevent this spurious warning, unconditionally set the `BH_Uptodate` flag before calling `mark_buffer_dirty()` in `udf_open_lvid()` and `udf_sync_fs()`. This acknowledges that the in-memory buffer is valid and matches the workaround previously applied to `udf_close_lvid()` in commit 853a0c25baf9 ("udf: Mark LVID buffer as uptodate before marking it dirty"). Extending this workaround ensures consistent behavior across all LVID updates. Buffer I/O error on dev loop0, logical block 128, lost sync page write ------------[ cut here ]------------ !buffer_uptodate(bh) WARNING: fs/buffer.c:1087 at mark_buffer_dirty+0x299/0x410 fs/buffer.c:1087 ... Call Trace: udf_open_lvid+0x369/0x5b0 fs/udf/super.c:2078
CVE-2026-93140
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93140
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "853a0c25baf96b028de1654bea1e0c8857eadf3d",
"lessThan": "e6461ef34f91ad7dbffdf912b3d661a7dd892931",
"versionType": "git"
},
{
"status": "affected",
"version": "853a0c25baf96b028de1654bea1e0c8857eadf3d",
"lessThan": "359cea636f4a74a96c01a8050f155e12840c079a",
"versionType": "git"
},
{
"status": "affected",
"version": "853a0c25baf96b028de1654bea1e0c8857eadf3d",
"lessThan": "a4c4e38b356ad4c1f90478124922917489137c08",
"versionType": "git"
},
{
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"lessThan": "8034ddf4751d9143c5ef7eebe3d4f33218fdd378",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "ee477e5204f764444e60699280abf5936c2a6ae6",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "11afe1912140f79d5af3091a54b181ef72fce1a5",
"versionType": "git"
},
{
"status": "affected",
"version": "853a0c25baf96b028de1654bea1e0c8857eadf3d",
"lessThan": "c4058355d27488a3cd31c60c032335f77c4fdcfc",
"versionType": "git"
},
{
"status": "affected",
"version": "853a0c25baf96b028de1654bea1e0c8857eadf3d",
"lessThan": "fb0601134c7e51728bd098abc6909315de1e5d86",
"versionType": "git"
},
{
"status": "affected",
"version": "c7da4ed95a78e38fdaffb06eaf1a3f3318b1add6",
"versionType": "git"
},
{
"status": "affected",
"version": "c005218328597211008a4d33a91e2952798e3556",
"versionType": "git"
},
{
"status": "affected",
"version": "1357ed0b4b9db30846377febb40a847d6103c991",
"versionType": "git"
},
{
"status": "affected",
"version": "43f4a516b2f5492bc597f3753b693ad8adc62748",
"versionType": "git"
},
{
"status": "affected",
"version": "2.6.27.62",
"lessThan": "2.6.28",
"versionType": "semver"
},
{
"status": "affected",
"version": "2.6.32.57",
"lessThan": "2.6.33",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.0.21",
"lessThan": "3.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "3.2.6",
"lessThan": "3.3",
"versionType": "semver"
}
],
"programFiles": [
"fs/udf/super.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/udf/super.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93140
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37860 · Revision 1
- Added to Heist Feed
- Publisher date