CVE-2021-4028
A flaw in the Linux kernel's implementation of RDMA communications manager listener code allowed an attacker with local access to setup a socket to listen on a high port allowing for a list element to be used after free. Given the ability to execute code, a local attacker could leverage this use-after-free to crash the system or possibly escalate privileges on the system.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 5.10 | 5.10.71 |
| linux / linux_kernel | 5.11 | 5.14.10 |
| suse / linux_enterprise | 15.0-sp4 | 15.0-sp4.x |
| suse / linux_enterprise | 15.0-sp3 | 15.0-sp3.x |
- https://access.redhat.com/security/cve/CVE-2021-4028
- https://bugzilla.redhat.com/show_bug.cgi?id=2027201
- https://bugzilla.suse.com/show_bug.cgi?id=1193167#c0
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bc0bdc5afaa74
- https://lkml.org/lkml/2021/10/4/697
- https://security.netapp.com/advisory/ntap-20221228-0002/
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