11/9/2024
29/9/2024
CVE-2024-45023: md/raid1: Fix data corruption for degraded array with slow disk
First published: Wed Sep 11 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved:
md/raid1: Fix data corruption for degraded array with slow disk
read_balance() will avoid reading from slow disks as much as possible,
however, if valid data only lands in slow disks, and a new normal disk
is still in recovery, unrecovered data can be read:
raid1_read_request
read_balance
raid1_should_read_first
-> return false
choose_best_rdev
-> normal disk is not recovered, return -1
choose_bb_rdev
-> missing the checking of recovery, return the normal disk
-> read unrecovered data
Root cause is that the checking of recovery is missing in
choose_bb_rdev(). Hence add such checking to fix the problem.
Also fix similar problem in choose_slow_rdev().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Software | Affected Version | How to fix |
---|
Linux Linux kernel | >=6.9<6.10.7 | |
Linux Linux kernel | =6.11-rc1 | |
Linux Linux kernel | =6.11-rc2 | |
Linux Linux kernel | =6.11-rc3 | |
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- version/linux linux kernel/6.11-rc3
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