CVE-2025-40139 — Linux vulnerability
16 documents7 sources
Severity
8.4HIGH
No vectorEPSS
0.0%
top 92.64%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedNov 12
Latest updateFeb 24
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…