CVE-2025-40149
HIGH severity · CVSS 7.8 · Use-after-free
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/13159c7125636371543a82cb7bbae00ab36730cc ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/13159c7125636371543a82cb7bbae00ab36730ccPatch
- https://git.kernel.org/stable/c/2b1bef126bbb8d0da51491357559126d567c1deePatch
- https://git.kernel.org/stable/c/c65f27b9c3be2269918e1cbad6d8884741f835c5Patch
- https://git.kernel.org/stable/c/e37ca0092ddace60833790b4ad7a390408fb1be9Patch
- https://git.kernel.org/stable/c/f09cd209359a23f88d4f3fa3d2379d057027e53cPatch
- https://git.kernel.org/stable/c/feb474ddbf26b51f462ae2e60a12013bdcfc5407Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html