ext4: fix infinite loop when replaying fast_commit
In the Linux kernel, the following vulnerability has been resolved: ext4: fix infinite loop when replaying fast_commit When doing fast_commit replay an infinite loop may occur due to an uninitialized extent_status struct. ext4_ext_determine_insert_hole() does not detect the replay and calls ext4_es_find_extent_range(), which will return immediately without initializing the 'es' variable. Because 'es' contains garbage, an integer overflow may happen causing an infinite loop in this function, easily reproducible using fstest generic/039. This commit fixes this issue by unconditionally initializing the structure in function ext4_es_find_extent_range(). Thanks to Zhang Yi, for figuring out the real problem!
CVE-2024-43828
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-2024-43828
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": "8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2",
"lessThan": "5ed0496e383cb6de120e56991385dce70bbb87c1",
"versionType": "git"
},
{
"status": "affected",
"version": "8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2",
"lessThan": "0619f7750f2b178a1309808832ab20d85e0ad121",
"versionType": "git"
},
{
"status": "affected",
"version": "8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2",
"lessThan": "181e63cd595c688194e07332f9944b3a63193de2",
"versionType": "git"
},
{
"status": "affected",
"version": "8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2",
"lessThan": "c6e67df64783e99a657ef2b8c834ba2bf54c539c",
"versionType": "git"
},
{
"status": "affected",
"version": "8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2",
"lessThan": "81f819c537d29932e4b9267f02411cbc8b355178",
"versionType": "git"
},
{
"status": "affected",
"version": "8016e29f4362e285f0f7e38fadc61a5b7bdfdfa2",
"lessThan": "907c3fe532253a6ef4eb9c4d67efb71fab58c706",
"versionType": "git"
}
],
"programFiles": [
"fs/ext4/extents_status.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.224",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.165",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.103",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.44",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.10.3",
"versionType": "semver",
"lessThanOrEqual": "6.10.*"
},
{
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/ext4/extents_status.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-43828
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26689 · Revision 1
- Added to Heist Feed
- Publisher date