Review reviewHigh

CVE-2024-53179

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free of signing key Customers have reported use-after-free in @ses->auth_key.response with SMB2.1 + sign mounts which occurs due to following race: task A task B cifs_mount() dfs_mount_share() get_session() cifs_mount_get_session() cifs_send_recv() cifs_get_smb_ses() compound_send_recv() cifs_setup_session() smb2_setup_request() kfree_sensitive() smb2_calc_signature() crypto_shash_setkey() *UAF* Fix this by ensuring that we have a valid @ses->auth_key.response by checking whether @ses->ses_status...

CVSS: 7.8
EPSS: -
CISA KEV: Not listed
Published: 2024.12.27

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= 32811d242ff6f28da2ab18c90a15e32fd958e774 < 39619c65ab4bbb3e78c818f537687653e112764d, >= 32811d242ff6f28da2ab18c90a15e32fd958e774 < 0e2b654a3848bf9da3b0d54c1ccf3f1b8c635591, >= 32811d242ff6f28da2ab18c90a15e32fd958e774 < 343d7fe6df9e247671440a932b6a73af4fa86d95, >= 3.12, < 6.6.70, >= 6.7 < 6.12.2
Fixed versions: 6.6.70, 6.12.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux Linux, linux kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-416