VDB
DEBIAN-CVE-2025-40139
DEBIAN-CVE-2025-40139
PUBLISHED
CVSS 8.699999809265137 HIGH
In the Linux kernel, the following vulnerability has been resolved: smc: Use __sk_dst_get() and dst_dev_rcu() in in smc_clc_prfx_set(). smc_clc_prfx_set() is called during connect() and not under RCU nor RTNL. Using sk_dst_get(sk)->dev could trigger UAF. Let's use __sk_dst_get() and dev_dst_rcu() under rcu_read_lock() after kernel_getsockname(). Note that the returned value of smc_clc_prfx_set() is not used in the caller. While at it, we change the 1st arg of smc_clc_prfx_set[46]_rcu() not to touch dst there.
Risk Scores
CVSS 4.0
8.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | linux | 0, *, * |
| Debian:11 | linux | *, 6.1.7-1, 6.11-1~exp1 |
| Debian:12 | linux | 6.13.6-1~exp1, *, * |
| Debian:14 | linux | *, 6.12.48-1, 6.16.7-1 |
Timeline
- Nov 12, 2025 CVE Published
- Apr 28, 2026 CVE Updated