- Kernel Update Version:
- Release Date:
- 2022-03-02 08:28:02
packet: packet_sk_charge() could try to charge zero memory, leading to a use-after-free in memcg subsystem.
memcg: potential use-after-free in the implementation of uncharge operations.
qxl: kernel crash in qxl_release_fence_buffer_objects().
i40iw: kernel complains about failed RTNL assertion in i40iw_addr_resolve_neigh().
Slow memory allocations in nf_conntrack when a netns is created.When a new netns is created, high-order page allocations can happen in nf_ct_alloc_hashtable(). If memory is fragmented, such allocations can become very slow due to memory reclaim, etc. This, in turn, could result in significant slowdowns on the node.
nfsd: memory corruption in nfsd4_lock().
Potential hard lockups in timer-related code: jiffies_lock could be held for a long time.
(enhancement) ploop: added interface to dump the cached BAT.It was discovered that containers could get a broken on-disk BAT but have healthy in-kernel data in certain cases. To detect and fix such conditions, the means to dump the cached BAT were implemented in ploop. Note that, to make use of this enhancement, version 126.96.36.199 or newer of the userspace ploop tools is needed.
netfilter: kernel crash in the implementation of nf_tables due to use-after-free in dynamic operations.
A container with NFS server could force other such containers to use the older NFSv4 client tracker, which slows down NFS mounts.
ext4: potential kernel crash (general protection fault) in ext4_free_blocks().
mpt2sas: scheduling while atomic in _scsih_io_done().