CVE-2025-40149

tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().

State: Published
Severity: 7.8 High
Published: Nov 12, 2025
Updated: Oct 15, 2026
Reserved: Apr 16, 2025

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().

get_netdev_for_sock() is called during setsockopt(), so not under RCU.

Using sk_dst_get(sk)->dev could trigger UAF.

Let's use __sk_dst_get() and dst_dev_rcu().

Note that the only ->ndo_sk_get_lower_dev() user is bond_sk_get_lower_dev(), which uses RCU.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	e8f69799810c32dd40c6724d829eccc70baad07f to before 2b1bef126bbb8d0da51491357559126d567c1deeAffected e8f69799810c32dd40c6724d829eccc70baad07f to before e37ca0092ddace60833790b4ad7a390408fb1be9Affected e8f69799810c32dd40c6724d829eccc70baad07f to before 13159c7125636371543a82cb7bbae00ab36730ccAffected e8f69799810c32dd40c6724d829eccc70baad07f to before f09cd209359a23f88d4f3fa3d2379d057027e53cAffected e8f69799810c32dd40c6724d829eccc70baad07f to before feb474ddbf26b51f462ae2e60a12013bdcfc5407Affected e8f69799810c32dd40c6724d829eccc70baad07f to before c65f27b9c3be2269918e1cbad6d8884741f835c5Affected
LinuxLinux	4.18Affected before 4.18Not affected 5.15.199 through 5.15.Not affected 6.1.161 through 6.1.Not affected 6.6.121 through 6.6.Not affected 6.12.66 through 6.12.Not affected 6.17.3 through 6.17.*Not affected 6.18 and laterNot affected

Product

Versions

LinuxLinux

e8f69799810c32dd40c6724d829eccc70baad07f to before 2b1bef126bbb8d0da51491357559126d567c1deeAffected
e8f69799810c32dd40c6724d829eccc70baad07f to before e37ca0092ddace60833790b4ad7a390408fb1be9Affected
e8f69799810c32dd40c6724d829eccc70baad07f to before 13159c7125636371543a82cb7bbae00ab36730ccAffected
e8f69799810c32dd40c6724d829eccc70baad07f to before f09cd209359a23f88d4f3fa3d2379d057027e53cAffected
e8f69799810c32dd40c6724d829eccc70baad07f to before feb474ddbf26b51f462ae2e60a12013bdcfc5407Affected
e8f69799810c32dd40c6724d829eccc70baad07f to before c65f27b9c3be2269918e1cbad6d8884741f835c5Affected

LinuxLinux

4.18Affected
before 4.18Not affected
5.15.199 through 5.15.*Not affected
6.1.161 through 6.1.*Not affected
6.6.121 through 6.6.*Not affected
6.12.66 through 6.12.*Not affected
6.17.3 through 6.17.*Not affected
6.18 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.