CVE-2021-28693

published 2021-06-30

CVE-2021-28693: xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs...) in a temporary area before they are copied by Xen to…

Priority P4 22 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C H I N A N

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs...) in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the allocator. Unfortunately, it was discovered that modules will not be scrubbed on Arm.

Affected

11 ranges

Vendor	Product	Version range	Fixed in
debian	xen	< xen 4.14.2+25-gb6a8c4f72d-1 (bookworm)	xen 4.14.2+25-gb6a8c4f72d-1 (bookworm)
xen	xen	—	—
xen	xen	—	—
xen	xen	—	—
xen	xen	—	—
xen	xen	>= 0 < 4.14.2+25-gb6a8c4f72d-1	4.14.2+25-gb6a8c4f72d-1
xen	xen	>= 0 < 4.14.2+25-gb6a8c4f72d-1	4.14.2+25-gb6a8c4f72d-1
xen	xen	>= 0 < 4.14.2+25-gb6a8c4f72d-1	4.14.2+25-gb6a8c4f72d-1
xen	xen	>= 0 < 4.14.2+25-gb6a8c4f72d-1	4.14.2+25-gb6a8c4f72d-1
xen	xen	4.12.0 – 4.15.0	—
xen	xen	>= 4.13.x < unspecified	unspecified

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

nvd v2.0 2.1 LOW AV:L/AC:L/Au:N/C:P/I:N/A:N

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

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