Description
In the Linux kernel, the following vulnerability has been resolved: NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify() [You don't often get email from xiongx18@fudan.edu.cn. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.] The reference counting issue happens in two error paths in the function _nfs42_proc_copy_notify(). In both error paths, the function simply returns the error code and forgets to balance the refcount of object `ctx`, bumped by get_nfs_open_context() earlier, which may cause refcount leaks. Fix it by balancing refcount of the `ctx` object before the function returns in both error paths.
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
0491567b51efeca807da1125a1a0d5193875e286 to < 9b9feec97c1fc7dd9bb69f62c4905cddf1801599affected0491567b51efeca807da1125a1a0d5193875e286 to < b37f482ba9f0e6382c188e3fccf6c4b2fdc938ebaffected0491567b51efeca807da1125a1a0d5193875e286 to < fb73bf6305f4eb8f0cf9a61ee874d55f019d6dc4affected0491567b51efeca807da1125a1a0d5193875e286 to < f46f632f9cfae4b2e3635fa58840a8ec584c42e3affected0491567b51efeca807da1125a1a0d5193875e286 to < b7f114edd54326f730a754547e7cfb197b5bc132affected
Linux Linux
Default version status: affected
5.5affected0 to < 5.5unaffected5.10.111 to ≤ 5.10.*unaffected5.15.34 to ≤ 5.15.*unaffected5.16.20 to ≤ 5.16.*unaffected5.17.3 to ≤ 5.17.*unaffected5.18 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/9b9feec97c1fc7dd9bb69f62c4905cddf1801599 ↗
- https://git.kernel.org/stable/c/b37f482ba9f0e6382c188e3fccf6c4b2fdc938eb ↗
- https://git.kernel.org/stable/c/fb73bf6305f4eb8f0cf9a61ee874d55f019d6dc4 ↗
- https://git.kernel.org/stable/c/f46f632f9cfae4b2e3635fa58840a8ec584c42e3 ↗
- https://git.kernel.org/stable/c/b7f114edd54326f730a754547e7cfb197b5bc132 ↗