CVE-2025-21791
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e | affected |
| Linux | Linux | a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 20a3489b396764cc9376e32a9172bee26a89dc3b | affected |
| Linux | Linux | a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 5bb4228c32261d06e4fbece37ec3828bcc005b6b | affected |
| Linux | Linux | a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < c7574740be8ce68a57d0aece24987b9be2114c3c | affected |
| Linux | Linux | a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < c40cb5c03e37552d6eff963187109e2c3f78ef6f | affected |
| Linux | Linux | a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 022cac1c693add610ae76ede03adf4d9d5a2cf21 | affected |
| Linux | Linux | a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 7b81425b517accefd46bee854d94954f5c57e019 | affected |
| Linux | Linux | a8e3e1a9f02094145580ea7920c6a1d9aabd5539 < 6d0ce46a93135d96b7fa075a94a88fe0da8e8773 | affected |
| Linux | Linux | 4.9 | affected |
| Linux | Linux | 0 < 4.9 | unaffected |
| Linux | Linux | 5.4.291 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.235 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.179 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.129 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.79 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.16 <= 6.12.* | unaffected |
| Linux | Linux | 6.13.4 <= 6.13.* | unaffected |
| Linux | Linux | 6.14 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
CVE Program Container
Additional References
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
References
- https://git.kernel.org/stable/c/6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e
- https://git.kernel.org/stable/c/20a3489b396764cc9376e32a9172bee26a89dc3b
- https://git.kernel.org/stable/c/5bb4228c32261d06e4fbece37ec3828bcc005b6b
- https://git.kernel.org/stable/c/c7574740be8ce68a57d0aece24987b9be2114c3c
- https://git.kernel.org/stable/c/c40cb5c03e37552d6eff963187109e2c3f78ef6f
- https://git.kernel.org/stable/c/022cac1c693add610ae76ede03adf4d9d5a2cf21
- https://git.kernel.org/stable/c/7b81425b517accefd46bee854d94954f5c57e019
- https://git.kernel.org/stable/c/6d0ce46a93135d96b7fa075a94a88fe0da8e8773
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