CVE-2025-68219

Ecosystem	Package	Version

Vulnerabilities

CVE-2025-68219

In the Linux kernel, the following vulnerability has been resolved: cifs: fix memory leak in smb3_fs_context_parse_param error path Add proper cleanup of ctx->source and fc->source to the cifs_parse_mount_err error handler. This ensures that memory allocated for the source strings is correctly freed on all error paths, matching the cleanup already performed in the success path by smb3_cleanup_fs_context_contents(). Pointers are also set to NULL after freeing to prevent potential double-free issues. This change fixes a memory leak originally detected by syzbot. The leak occurred when processing Opt_source mount options if an error happened after ctx->source and fc->source were successfully allocated but before the function completed. The specific leak sequence was: 1. ctx->source = smb3_fs_context_fullpath(ctx, '/') allocates memory 2. fc->source = kstrdup(ctx->source, GFP_KERNEL) allocates more memory 3. A subsequent error jumps to cifs_parse_mount_err 4. The old error handler freed passwords but not the source strings, causing the memory to leak. This issue was not addressed by commit e8c73eb7db0a ("cifs: client: fix memory leak in smb3_fs_context_parse_param"), which only fixed leaks from repeated fsconfig() calls but not this error path. Patch updated with minor change suggested by kernel test robot

Published Dec 17, 2025

https://lore.kernel.org/linux-cve-announce/2025121632-CVE-2025-68219-f9c4@gregkh/

CVSS ScoreMedium

4.8


rpm	kernel	5.14.0-160.el9
rpm	kernel	5.14.0-162.12.1.el9_1
rpm	kernel	5.14.0-162.18.1.el9_1
rpm	kernel	5.14.0-162.22.2.el9_1
rpm	kernel	5.14.0-162.23.1.el9_1
rpm	kernel	5.14.0-162.6.1.el9_1
rpm	kernel	5.14.0-283.el9
rpm	kernel	5.14.0-284.11.1.el9_2
rpm	kernel	5.14.0-284.18.1.el9_2
rpm	kernel	5.14.0-284.25.1.0.1.el9_2
rpm	kernel	5.14.0-284.25.1.el9_2
rpm	kernel	5.14.0-284.30.0.1.el9_2
rpm	kernel	5.14.0-284.30.1.el9_2
rpm	kernel	5.14.0-362.13.0.1.el9_3
rpm	kernel	5.14.0-362.13.1.el9_3
rpm	kernel	5.14.0-362.18.0.1.el9_3
rpm	kernel	5.14.0-362.18.0.2.el9_3
rpm	kernel	5.14.0-362.18.1.el9_3
rpm	kernel	5.14.0-362.24.1.0.1.el9_3
rpm	kernel	5.14.0-362.24.1.0.2.el9_3
rpm	kernel	5.14.0-362.24.1.0.3.el9_3
rpm	kernel	5.14.0-362.24.1.0.4.el9_3
rpm	kernel	5.14.0-362.24.1.el9_3
rpm	kernel	5.14.0-362.8.1.el9_3
rpm	kernel	5.14.0-427.13.1.0.1.el9_4
rpm	kernel	5.14.0-427.13.1.el9_4
rpm	kernel	5.14.0-427.16.1.0.1.el9_4
rpm	kernel	5.14.0-427.16.1.el9_4
rpm	kernel	5.14.0-427.18.1.0.1.el9_4
rpm	kernel	5.14.0-427.18.1.el9_4
rpm	kernel	5.14.0-427.20.1.0.1.el9_4
rpm	kernel	5.14.0-427.20.1.el9_4
rpm	kernel	5.14.0-427.22.1.0.1.el9_4
rpm	kernel	5.14.0-427.22.1.el9_4
rpm	kernel	5.14.0-427.24.1.0.1.el9_4
rpm	kernel	5.14.0-427.24.1.el9_4
rpm	kernel	5.14.0-427.26.1.0.1.el9_4
rpm	kernel	5.14.0-427.26.1.el9_4
rpm	kernel	5.14.0-427.28.1.0.1.el9_4
rpm	kernel	5.14.0-427.28.1.el9_4
rpm	kernel	5.14.0-427.31.1.0.1.el9_4
rpm	kernel	5.14.0-427.31.1.el9_4
rpm	kernel	5.14.0-427.33.1.0.1.el9_4
rpm	kernel	5.14.0-427.33.1.el9_4
rpm	kernel	5.14.0-427.35.1.0.1.el9_4
rpm	kernel	5.14.0-427.35.1.el9_4
rpm	kernel	5.14.0-427.37.1.0.1.el9_4
rpm	kernel	5.14.0-427.37.1.el9_4
rpm	kernel	5.14.0-427.40.1.0.1.el9_4
rpm	kernel	5.14.0-427.40.1.el9_4

Ecosystem	Package	Version

CVE-2025-68219 | Components Impacted | Sonatype Guide | Sonatype Guide

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CVE-2025-68219