CVE-2025-40139
Nov. 12, 2025, 4:19 p.m.
None
No Score
Description
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.
Product(s) Impacted
| Product | Versions |
|---|---|
| kernel |
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
Tags
Timeline
Published: Nov. 12, 2025, 11:15 a.m.
Last Modified: Nov. 12, 2025, 4:19 p.m.
Last Modified: Nov. 12, 2025, 4:19 p.m.
Status : Awaiting Analysis
CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.
More infoSource
416baaa9-dc9f-4396-8d5f-8c081fb06d67
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