Overview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
ceph: avoid putting the realm twice when decoding snaps fails
When decoding the snaps fails it maybe leaving the ‘first_realm’ and ‘realm’ pointing to the same snaprealm memory. And then it’ll put it twice and could cause random use-after-free, BUG_ON, etc issues.
Details
- Affected product:
- CentOS 7 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , Oracle Linux 7 ELS , RHEL 7 ELS , Ubuntu 16.04 ELS
- Affected packages:
- linux @ 4.4.0 (+6 more)
In the Linux kernel, the following vulnerability has been resolved:
ceph: avoid putting the realm twice when decoding snaps fails
When decoding the snaps fails it maybe leaving the ‘first_realm’ and ‘realm’ pointing to the same snaprealm memory. And then it’ll put it twice and could cause random use-after-free, BUG_ON, etc issues.