In the Linux kernel, the following vulnerability has been resolved:
ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()
Determine if the group block bitmap is corrupted before using ac_b_ex in
ext4_mb_try_best_found() to avoid allocating blocks from a group with a
corrupted block bitmap in the following concurrency and making the
situation worse.
ext4_mb_regular_allocator
ext4_lock_group(sb, group)
ext4_mb_good_group
// check if the group bbitmap is corrupted
ext4_mb_complex_scan_group
// Scan group gets ac_b_ex but doesn't use it
ext4_unlock_group(sb, group)
ext4_mark_group_bitmap_corrupted(group)
// The block bitmap was corrupted during
// the group unlock gap.
ext4_mb_try_best_found
ext4_lock_group(ac->ac_sb, group)
ext4_mb_use_best_found
mb_mark_used
// Allocating blocks in block bitmap corrupted group
Metrics
Affected Vendors & Products
References
History
Fri, 22 Nov 2024 12:00:00 +0000
Type | Values Removed | Values Added |
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References |
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Tue, 05 Nov 2024 10:45:00 +0000
Type | Values Removed | Values Added |
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References |
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Wed, 18 Sep 2024 19:00:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Redhat rhel Aus
Redhat rhel E4s Redhat rhel Tus |
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CPEs | cpe:/o:redhat:rhel_aus:8.6 cpe:/o:redhat:rhel_e4s:8.6 cpe:/o:redhat:rhel_tus:8.6 |
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Vendors & Products |
Redhat rhel Aus
Redhat rhel E4s Redhat rhel Tus |
Tue, 13 Aug 2024 23:00:00 +0000
Type | Values Removed | Values Added |
---|---|---|
CPEs | cpe:/o:redhat:rhel_eus:8.8 |
Thu, 08 Aug 2024 19:15:00 +0000
Type | Values Removed | Values Added |
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CPEs | cpe:/a:redhat:enterprise_linux:8::nfv cpe:/o:redhat:enterprise_linux:8 |
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-04-03T17:00:59.757Z
Updated: 2024-12-19T08:47:09.723Z
Reserved: 2024-02-19T14:20:24.176Z
Link: CVE-2024-26773
Vulnrichment
Updated: 2024-08-02T00:14:13.512Z
NVD
Status : Awaiting Analysis
Published: 2024-04-03T17:15:53.080
Modified: 2024-11-21T09:03:02.380
Link: CVE-2024-26773
Redhat