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CVE-2025-40139

smc: Use __sk_dst_get() and dst_dev_rcu() in in smc_clc_prfx_set().

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version a046d57da19f812216f393e7c535f5858f793ac3
Version < 0736993bfe5c7a9c744ae3fac62d769dfdae54e1
Status affected
Version a046d57da19f812216f393e7c535f5858f793ac3
Version < 935d783e5de9b64587f3adb25641dd8385e64ddb
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 4.11
Status affected
Version 0
Version < 4.11
Status unaffected
Version <= 6.17.*
Version 6.17.3
Status unaffected
Version <= *
Version 6.18
Status unaffected
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.073
CVSS Metriken
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