Advisories » MGASA-2022-0121

Updated kernel packages fix security vulnerabilities

Publication date: 29 Mar 2022
Type: security
Affected Mageia releases : 8
CVE: CVE-2022-0995 , CVE-2022-1011 , CVE-2022-1015 , CVE-2022-1016 , CVE-2022-1048 , CVE-2022-26490 , CVE-2022-27666 , CVE-2022-28356


This kernel update is based on upstream 5.15.32 and fixes at least the
following security issues:

An out-of-bounds (OOB) memory write flaw was found in the Linux kernel’s
watch_queue event notification subsystem. This flaw can overwrite parts
of the kernel state, potentially allowing a local user to gain privileged
access or cause a denial of service on the system (CVE-2022-0995).

A flaw use after free in the Linux kernel FUSE filesystem was found in
the way user triggers write(). A local user could use this flaw to get
some unauthorized access to some data from the FUSE filesystem and as
result potentially privilege escalation too (CVE-2022-1011).

A flaw was found in the Linux kernel in linux/net/netfilter/nf_tables_api.c
of the netfilter subsystem. This flaw allows a local user to cause an
out-of-bounds write issue (CVE-2022-1015).

A flaw was found in the Linux kernel in net/netfilter/nf_tables_core.c:
nft_do_chain, which can cause a use-after-free. This issue needs to handle
'return' with proper preconditions, as it can lead to a kernel information
leak problem caused by a local, unprivileged attacker (CVE-2022-1016).

A use-after-free flaw was found in the Linux kernel’s sound subsystem in
the way a user triggers concurrent calls of PCM hw_params. The hw_free
ioctls or similar race condition happens inside ALSA PCM for other ioctls.
This flaw allows a local user to crash or potentially escalate their
privileges on the system (CVE-2022-1048).

st21nfca_connectivity_event_received in drivers/nfc/st21nfca/se.c has
EVT_TRANSACTION buffer overflows because of untrusted length parameters

There is a buffer overflow in ESP transformation in net/ipv4/esp4.c and
net/ipv6/esp6.c via a large message. In some configurations, local users
can gain privileges by overwriting kernel heap objects (CVE-2022-27666).

A refcount leak bug was found in net/llc/af_llc.c (CVE-2022-28356).

Other fixes in this update:
- locking/lockdep: Avoid potential access of invalid memory in lock_class
- mm: kfence: fix missing objcg housekeeping for SLAB
- net: ipv6: fix skb_over_panic in __ip6_append_data
- rtw88: Add support for Realtek 8821CE RFE Type 6
- revert: "swiotlb: rework 'fix info leak with DMA_FROM_DEVICE'" as it
  breaks atleast ath9k

For other upstream fixes, see the referenced changelogs.