711128 – (CVE-2020-9383) kernel: Linux kernel through 5.5.6. set_fdc in drivers/block/floppy.c leads to a wait_til_ready out-of-bounds read (CVE-2020-9383)

Bug 711128 (CVE-2020-9383) - kernel: Linux kernel through 5.5.6. set_fdc in drivers/block/floppy.c leads to a wait_til_ready out-of-bounds read (CVE-2020-9383)

Summary: kernel: Linux kernel through 5.5.6. set_fdc in drivers/block/floppy.c leads t...

Status:	RESOLVED FIXED

Alias:	CVE-2020-9383

Product:	Gentoo Security
Classification:	Unclassified
Component:	Kernel (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Gentoo Kernel Security

URL:
Whiteboard:	A3 [upstream/ebuild]
Keywords:

Depends on:
Blocks:

Reported:	2020-03-01 01:26 UTC by Sam James
Modified:	2022-03-26 01:08 UTC (History)
CC List:	0 users

See Also:
Package list:
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Sam James archtester

2020-03-01 01:26:02 UTC

"An issue was discovered in the Linux kernel through 5.5.6. set_fdc in drivers/block/floppy.c leads to a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it, aka CID-2e90ca68b0d2."

Patch: https://github.com/torvalds/linux/commit/2e90ca68b0d2f5548804f22f0dd61145516171e3

Comment 1 John Helmert III archtester

2022-03-26 01:08:39 UTC

Fix in 4.9.215, 4.14.172, 4.19.107, 5.4.23.