Description
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().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a4c5785feb979cd996a99cfaad8bf353b2e79301affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 70eac9ba7ce25d99c1d99bbf4ddb058940f631f9affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3251ce3979f41bd228f77a7615f9dd616d06a110affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ee4d9e4ddf3f9c4ee2ec0a3aad6196ee36d30e57affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 06935c50cfa3ac57cce80bba67b6d38ec1406e92affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 36caab990b69ef4eec1d81c52a19f080b7daa059affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < f58e4270c73e7f086322978d585ea67c8076ce49affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 706cc36477139c1616a9b2b96610a8bb520b7119affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.4.296 to ≤ 5.4.*unaffected5.10.240 to ≤ 5.10.*unaffected5.15.189 to ≤ 5.15.*unaffected6.1.146 to ≤ 6.1.*unaffected6.6.99 to ≤ 6.6.*unaffected6.12.39 to ≤ 6.12.*unaffected6.15.7 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/a4c5785feb979cd996a99cfaad8bf353b2e79301 ↗
- https://git.kernel.org/stable/c/70eac9ba7ce25d99c1d99bbf4ddb058940f631f9 ↗
- https://git.kernel.org/stable/c/3251ce3979f41bd228f77a7615f9dd616d06a110 ↗
- https://git.kernel.org/stable/c/ee4d9e4ddf3f9c4ee2ec0a3aad6196ee36d30e57 ↗
- https://git.kernel.org/stable/c/06935c50cfa3ac57cce80bba67b6d38ec1406e92 ↗
- https://git.kernel.org/stable/c/36caab990b69ef4eec1d81c52a19f080b7daa059 ↗
- https://git.kernel.org/stable/c/f58e4270c73e7f086322978d585ea67c8076ce49 ↗
- https://git.kernel.org/stable/c/706cc36477139c1616a9b2b96610a8bb520b7119 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗