CVE-2024-26773

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Source
https://cve.org/CVERecord?id=CVE-2024-26773
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-26773.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-26773
Downstream
Related
Published
2024-04-03T17:00:59.757Z
Modified
2026-03-13T07:53:39.558007Z
Summary
ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()
Details

In the Linux kernel, the following vulnerability has been resolved:

ext4: avoid allocating blocks from corrupted group in ext4mbtrybestfound()

Determine if the group block bitmap is corrupted before using acbex in ext4mbtrybestfound() to avoid allocating blocks from a group with a corrupted block bitmap in the following concurrency and making the situation worse.

ext4mbregularallocator ext4lockgroup(sb, group) ext4mbgoodgroup // check if the group bbitmap is corrupted ext4mbcomplexscangroup // Scan group gets acbex but doesn't use it ext4unlockgroup(sb, group) ext4markgroupbitmapcorrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4mbtrybestfound ext4lockgroup(ac->acsb, group) ext4mbusebestfound mbmark_used // Allocating blocks in block bitmap corrupted group

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26773.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
163a203ddb36c36d4a1c942aececda0cc8d06aa7
Fixed
21f8cfe79f776287459343e9cfa6055af61328ea
Fixed
260fc96283c0f594de18a1b045faf6d8fb42874d
Fixed
927794a02169778c9c2e7b25c768ab3ea8c1dc03
Fixed
4c21fa60a6f4606f6214a38f50612b17b2f738f5
Fixed
f97e75fa4e12b0aa0224e83fcbda8853ac2adf36
Fixed
0184747b552d6b5a14db3b7fcc3b792ce64dedd1
Fixed
a2576ae9a35c078e488f2c573e9e6821d651fbbe
Fixed
4530b3660d396a646aad91a787b6ab37cf604b53

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-26773.json"