2025-01-19 10:17:53
Linux
PUBLISHED
In the Linux kernel, the following vulnerability has been resolved: rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy As mentioned in a previous commit of this series, using the net structure via current is not recommended for different reasons: - Inconsistency: getting info from the readers/writers netns vs only from the openers netns. - current->nsproxy can be NULL in some cases, resulting in an Oops (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acct(2). The per-netns structure can be obtained from the table->data using container_of(), then the net one can be retrieved from the listen socket (if available).