5.5

CVE-2025-38460

atm: clip: Fix potential null-ptr-deref in to_atmarpd().

In the Linux kernel, the following vulnerability has been resolved:

atm: clip: Fix potential null-ptr-deref in to_atmarpd().

atmarpd is protected by RTNL since commit f3a0592b37b8 ("[ATM]: clip
causes unregister hang").

However, it is not enough because to_atmarpd() is called without RTNL,
especially clip_neigh_solicit() / neigh_ops->solicit() is unsleepable.

Also, there is no RTNL dependency around atmarpd.

Let's use a private mutex and RCU to protect access to atmarpd in
to_atmarpd().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.13 < 5.4.296
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.240
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.189
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.146
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.99
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.39
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.7
Linux ≫ Linux Kernel Version2.6.12 Update-
Linux ≫ Linux Kernel Version2.6.12 Updaterc2
Linux ≫ Linux Kernel Version2.6.12 Updaterc3
Linux ≫ Linux Kernel Version2.6.12 Updaterc4
Linux ≫ Linux Kernel Version2.6.12 Updaterc5
Linux ≫ Linux Kernel Version6.16 Updaterc1
Linux ≫ Linux Kernel Version6.16 Updaterc2
Linux ≫ Linux Kernel Version6.16 Updaterc3
Linux ≫ Linux Kernel Version6.16 Updaterc4
Linux ≫ Linux Kernel Version6.16 Updaterc5
Debian ≫ Debian Linux Version11.0
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.057
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/06935c50cfa3ac57cce80bba67b6d38ec1406e92
Patch
https://git.kernel.org/stable/c/3251ce3979f41bd228f77a7615f9dd616d06a110
Patch
https://git.kernel.org/stable/c/36caab990b69ef4eec1d81c52a19f080b7daa059
Patch
https://git.kernel.org/stable/c/706cc36477139c1616a9b2b96610a8bb520b7119
Patch
https://git.kernel.org/stable/c/70eac9ba7ce25d99c1d99bbf4ddb058940f631f9
Patch
https://git.kernel.org/stable/c/a4c5785feb979cd996a99cfaad8bf353b2e79301
Patch
https://git.kernel.org/stable/c/ee4d9e4ddf3f9c4ee2ec0a3aad6196ee36d30e57
Patch
https://git.kernel.org/stable/c/f58e4270c73e7f086322978d585ea67c8076ce49
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Third Party Advisory