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Alpine: multiple c-ares packages: security update to 1.34.8-r0

high Tenable Cloud Security Plugin ID 444526

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - c-ares is an asynchronous resolver library. From ver 1.32.3 until 1.34.7, a use-after-free / double-free
 in c-ares' query-completion handling. The same flaw — a query's callback being invoked while the query is
 still linked in the channel's internal lookup structures — is present at multiple points in the
 resend/finish path (timeout handling, response handling, and query dispatch). If the query, or for
 ares_getaddrinfo() the owning host_query, is freed as a side effect of that callback, it is then accessed
 and/or freed a second time. This vulnerability is fixed in ver 1.34.7. (CVE-2026-33630)

Solution

Update the c-ares library and its related packages to version 1.34.8-r0 or later.

See Also

https://security.alpinelinux.org/vuln/CVE-2026-33630

Plugin Details

Severity: High

ID: 444526

Version: Revision 1.4

Type: Local

Published: 7/9/2026

Updated: 9/4/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-33630

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2026-33630