CVE-2025-40149
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.16% probability · 6th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.