CVE-2022-49905
net/smc: Fix possible leaked pernet namespace in smc_init()
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net/smc: Fix possible leaked pernet namespace in smc_init()
In the Linux kernel, the following vulnerability has been resolved: net/smc: Fix possible leaked pernet namespace in smc_init() In smc_init(), register_pernet_subsys(&smc_net_stat_ops) is called without any error handling. If it fails, registering of &smc_net_ops won't be reverted. And if smc_nl_init() fails, &smc_net_stat_ops itself won't be reverted. This leaves wild ops in subsystem linkedlist and when another module tries to call register_pernet_operations() it triggers page fault: BUG: unable to handle page fault for address: fffffbfff81b964c RIP: 0010:register_pernet_operations+0x1b9/0x5f0 Call Trace: <TASK> register_pernet_subsys+0x29/0x40 ebtables_init+0x58/0x1000 [ebtables] ...
Reserved 2025-05-01 | Published 2025-05-01 | Updated 2025-05-04 | Assigner Linuxgit.kernel.org/...c/61defd6450a9ef4a1487090449999b0fd83518ef
git.kernel.org/...c/c97daf836f7caf81d3144b8cd2b2a51f9bc3bd09
git.kernel.org/...c/62ff373da2534534c55debe6c724c7fe14adb97f
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