Description
In the Linux kernel, the following vulnerability has been resolved: genetlink: fix genl_bind() invoking bind() after -EPERM Per family bind/unbind callbacks were introduced to allow families to track multicast group consumer presence, e.g. to start or stop producing events depending on listeners. However, in genl_bind() the bind() callback was invoked even if capability checks failed and ret was set to -EPERM. This means that callbacks could run on behalf of unauthorized callers while the syscall still returned failure to user space. Fix this by only invoking bind() after "if (ret) break;" check i.e. after permission checks have succeeded.
Product status
3de21a8990d3c2cc507e9cc4ed00f36358d5b93e before 98c9d884047a3051c203708914a874dece3cbe54
3de21a8990d3c2cc507e9cc4ed00f36358d5b93e before 8858c1e9405906c09589d7c336f04058ea198207
3de21a8990d3c2cc507e9cc4ed00f36358d5b93e before 1dbfb0363224f6da56f6655d596dc5097308d6f5
6.9
Any version before 6.9
6.12.48
6.16.8
6.17
References
git.kernel.org/...c/98c9d884047a3051c203708914a874dece3cbe54
git.kernel.org/...c/8858c1e9405906c09589d7c336f04058ea198207
git.kernel.org/...c/1dbfb0363224f6da56f6655d596dc5097308d6f5
