smc: Use __sk_dst_get() and dst_dev_rcu() in in smc_clc_prfx_set().
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.8epss 0.2%
probabilidad de explotación
0.2%top 95% de las CVE
explotación observada
noninguna fuente lo reporta
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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Productos afectados
Linux · LinuxReferencias
https://git.kernel.org/stable/c/0736993bfe5c7a9c744ae3fac62d769dfdae54e1https://git.kernel.org/stable/c/5a2fccc4b32c13ddde3676f9e15e1a9baa7d6fdehttps://git.kernel.org/stable/c/80d1fd39f4e37d836655e9f7ffccaf78925049bfhttps://git.kernel.org/stable/c/935d783e5de9b64587f3adb25641dd8385e64ddbhttps://git.kernel.org/stable/c/956c57daba55cf9ed25d9f2512883b8a1a927599