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PUBLISHED

CVE-2021-46950

md/raid1: properly indicate failure when ending a failed write request

Reserved:2024-02-25
Published:2024-02-27
Updated:2024-04-04

Description

In the Linux kernel, the following vulnerability has been resolved: md/raid1: properly indicate failure when ending a failed write request This patch addresses a data corruption bug in raid1 arrays using bitmaps. Without this fix, the bitmap bits for the failed I/O end up being cleared. Since we are in the failure leg of raid1_end_write_request, the request either needs to be retried (R1BIO_WriteError) or failed (R1BIO_Degraded).

Product status

Default status
unaffected

900c531899f5 before 12216d0919b6
affected

1cd972e0a107 before a6e17cab00fc
affected

eeba6809d8d5 before 6920cef604fa
affected

eeba6809d8d5 before 661061a45e32
affected

eeba6809d8d5 before 59452e551784
affected

eeba6809d8d5 before 538244fba59f
affected

eeba6809d8d5 before 2417b9869b81
affected

Default status
affected

5.4
affected

Any version before 5.4
unaffected

4.14.233
unaffected

4.19.191
unaffected

5.4.118
unaffected

5.10.36
unaffected

5.11.20
unaffected

5.12.3
unaffected

5.13
unaffected

References

https://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5

https://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6f

https://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40

https://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382

https://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515

https://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86dd

https://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1dd

cve.org CVE-2021-46950

nvd.nist.gov CVE-2021-46950

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