CVE-2021-46950
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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).
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5Patch
- https://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1ddPatch
- https://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86ddPatch
- https://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515Patch
- https://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382Patch
- https://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40Patch
- https://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6fPatch
- https://git.kernel.org/stable/c/12216d0919b64ee2ea5dc7a50e455670f44383d5Patch
- https://git.kernel.org/stable/c/2417b9869b81882ab90fd5ed1081a1cb2d4db1ddPatch
- https://git.kernel.org/stable/c/538244fba59fde17186322776247cd9c05be86ddPatch
- https://git.kernel.org/stable/c/59452e551784b7a57a45d971727e9db63b192515Patch
- https://git.kernel.org/stable/c/661061a45e32d8b2cc0e306da9f169ad44011382Patch
- https://git.kernel.org/stable/c/6920cef604fa57f9409e3960413e9cc11f5c5a40Patch
- https://git.kernel.org/stable/c/a6e17cab00fc5bf85472434c52ac751426257c6fPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.