CVE-2025-40149
Published: November 14, 2025Last modified: November 14, 2025
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.161-r0) |
| 25 LTS | linux-lts | Fixed (6.12.66-r0) | |
| Stream | linux-lts | Fixed (6.12.66-r0) |
References
- https://git.kernel.org/stable/c/13159c7125636371543a82cb7bbae00ab36730cc
- https://git.kernel.org/stable/c/2b1bef126bbb8d0da51491357559126d567c1dee
- https://git.kernel.org/stable/c/c65f27b9c3be2269918e1cbad6d8884741f835c5
- https://git.kernel.org/stable/c/e37ca0092ddace60833790b4ad7a390408fb1be9
- https://git.kernel.org/stable/c/f09cd209359a23f88d4f3fa3d2379d057027e53c
- https://git.kernel.org/stable/c/feb474ddbf26b51f462ae2e60a12013bdcfc5407