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Chainguard: linux-qemu-melange: security update to 6.18.49-r2

medium Tenable Cloud Security Plugin ID 472558

Description

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

 - In the Linux kernel, the following vulnerability has been resolved: erofs: fix metabuf leak in inode xattr
 initialization commit bb88e8da0025 ("erofs: use meta buffers for xattr operations") converted xattr
 operations to use on-stack erofs_buf instances. erofs_init_inode_xattrs() uses such a metabuf while
 reading the inline xattr header and shared xattr id array. Some error paths after erofs_read_metabuf()
 leave through out_unlock without dropping the metabuf, so the folio reference can leak. Consolidate the
 cleanup at out_unlock. erofs_put_metabuf() is a no-op if no folio has been acquired, and this keeps all
 paths after taking EROFS_I_BL_XATTR_BIT covered by a single cleanup site. (CVE-2026-64146)

Solution

Update the linux-qemu-melange library and its related packages to version 6.18.49-r2 or later.

Plugin Details

Severity: Medium

ID: 472558

Version: Revision 1.1

Type: Local

Published: 10/3/2026

Updated: 10/3/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.58

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-64146

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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

Vulnerability Publication Date: 7/19/2026

Reference Information

CVE: CVE-2026-64146