Improper Handling of Values Affecting kernel-rt-debug-kvm package, versions <0:5.14.0-427.28.1.el9_4


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELRTDEBUGKVM-6541115
  • published4 Apr 2024
  • disclosed3 Apr 2024

Introduced: 3 Apr 2024

CVE-2024-26773  (opens in a new tab)
CWE-229  (opens in a new tab)

How to fix?

Upgrade RHEL:9 kernel-rt-debug-kvm to version 0:5.14.0-427.28.1.el9_4 or higher.
This issue was patched in RHSA-2024:4928.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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

CVSS Scores

version 3.1