CVE-2020-29485

published 2020-12-15

CVE-2020-29485: An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XS_RESET_WATCHES request, not all tracking information is freed. A guest can cause…

Priority P4 21 medium 5.5 CVSS 3.1

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

An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XS_RESET_WATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are vulnerable. Systems using the C Xenstored implementation are not vulnerable.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	xen	< xen 4.14.0+88-g1d1d1f5391-1 (bookworm)	xen 4.14.0+88-g1d1d1f5391-1 (bookworm)
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—
xen	xen	>= 0 < 4.14.0+88-g1d1d1f5391-1	4.14.0+88-g1d1d1f5391-1
xen	xen	>= 0 < 4.14.0+88-g1d1d1f5391-1	4.14.0+88-g1d1d1f5391-1
xen	xen	>= 0 < 4.14.0+88-g1d1d1f5391-1	4.14.0+88-g1d1d1f5391-1
xen	xen	>= 0 < 4.14.0+88-g1d1d1f5391-1	4.14.0+88-g1d1d1f5391-1
xen	xen	4.6.0 – 4.14.0	—

CVSS provenance

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

nvd v2.0 4.9 MEDIUM AV:L/AC:L/Au:N/C:N/I:N/A:C

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

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