Alpine: multiple xen packages: security update to 4.9.0-r1

high Tenable Cloud Security Plugin ID 424751

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive
information or gain privileges via vectors involving transitive grants. (CVE-2017-12135)

- Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to
cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors
involving maptrack free list handling. (CVE-2017-12136)

- arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to
map_grant_ref. (CVE-2017-12137)

- Xen maintains the _GTF_{read,writ}ing bits as appropriate, to inform the guest that a grant is in use. A
guest is expected not to modify the grant details while it is in use, whereas the guest is free to
modify/reuse the grant entry when it is not in use. Under some circumstances, Xen will clear the status
bits too early, incorrectly informing the guest that the grant is no longer in use. A guest may
prematurely believe that a granted frame is safely private again, and reuse it in a way which contains
sensitive information, while the domain on the far end of the grant is still using the grant. Xen 4.9,
4.8, 4.7, 4.6, and 4.5 are affected. (CVE-2017-12855)

Plugin Details

Severity: High

ID: 424751

Version: Revision 1.8

Type: Local

Family: Alpine Linux Local Security Checks

Published: 4/4/2025

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 95.11

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2017-12137

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/15/2017

Reference Information

CVE: CVE-2017-12135, CVE-2017-12136, CVE-2017-12137, CVE-2017-12855

BID: 100341, 100342, 100344, 100346

IAVA: 2017-A-0253-S

IAVB: 2017-B-0108-S

Detections

Analytics