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Vulnerability CVE-2024-45023
Published: 2024-09-11
| Description: |
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(). |
References: |
https://git.kernel.org/stable/c/2febf5fdbf5d9a52ddc3e986971c8609b1582d67
https://git.kernel.org/stable/c/c916ca35308d3187c9928664f9be249b22a3a701
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