Bug 711128 (CVE-2020-9383)

Summary:	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)
Product:	Gentoo Security	Reporter:	Sam James <sam>
Component:	Kernel	Assignee:	Gentoo Kernel Security <security-kernel>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:	A3 [upstream/ebuild]
Package list:		Runtime testing required:	---

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.