CVE-2025-21791
vrf: use RCU protection in l3mdev_l3_out()
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdev_l3_out() l3mdev_l3_out() can be called without RCU being held: raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out() Add rcu_read_lock() / rcu_read_unlock() pair to avoid a potential UAF.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 27, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 20a3489b396764cc9376e32a9172bee26a89dc3b a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 5bb4228c32261d06e4fbece37ec3828bcc005b6b a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < c7574740be8ce68a57d0aece24987b9be2114c3c a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < c40cb5c03e37552d6eff963187109e2c3f78ef6f a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 022cac1c693add610ae76ede03adf4d9d5a2cf21 a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 7b81425b517accefd46bee854d94954f5c57e019 a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 6d0ce46a93135d96b7fa075a94a88fe0da8e8773
Linux / Linux
4.9
References
git.kernel.org: https://git.kernel.org/stable/c/6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e git.kernel.org: https://git.kernel.org/stable/c/20a3489b396764cc9376e32a9172bee26a89dc3b git.kernel.org: https://git.kernel.org/stable/c/5bb4228c32261d06e4fbece37ec3828bcc005b6b git.kernel.org: https://git.kernel.org/stable/c/c7574740be8ce68a57d0aece24987b9be2114c3c git.kernel.org: https://git.kernel.org/stable/c/c40cb5c03e37552d6eff963187109e2c3f78ef6f git.kernel.org: https://git.kernel.org/stable/c/022cac1c693add610ae76ede03adf4d9d5a2cf21 git.kernel.org: https://git.kernel.org/stable/c/7b81425b517accefd46bee854d94954f5c57e019 git.kernel.org: https://git.kernel.org/stable/c/6d0ce46a93135d96b7fa075a94a88fe0da8e8773 lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html