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redhatRedHatRHSA-2023:5244
HistorySep 19, 2023 - 12:37 p.m.

(RHSA-2023:5244) Important: kernel security, bug fix, and enhancement update

2023-09-1912:37:04
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45
linux kernel packages
ipvlan out-of-bounds write
nftables uaf
cls_fw exploitation
netfilter use-after-free
nf_tables stack-out-of-bounds-read
cls_flower out-of-bounds write
bluetooth unauthorized command execution
amd cross-process leak
low memory deadlock
intel 8.9 bug fix
ocs 4.8 cephfs kernel crash
st_gmac tx-checksum offload
mem_cgroup_id_get_online overflow
conntrack clash resolution
libceph security update
iavf bug fixes
i40e error
cifs_mount oops
iptables argument issue
hyper-v rhel 8 incomplete fc_transport
gfs2 file system withdrawal
rhel 8 hyper-v excessive driver logging
crypto rng lock imbalance
emr cpu pmu support
uncore frequency control driver
rapl pmu support

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.003

Percentile

69.3%

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • kernel: ipvlan: out-of-bounds write caused by unclear skb->cb (CVE-2023-3090)

  • kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)

  • kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

  • kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)

  • kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)

  • kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)

  • kernel: bluetooth: Unauthorized management command execution (CVE-2023-2002)

  • hw: amd: Cross-Process Information Leak (CVE-2023-20593)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

  • low memory deadlock with md devices and external (imsm) metadata handling - requires a kernfs notification backport (BZ#2208540)

  • Intel 8.9 BUG, SPR EMR FHF ACPI: Fix system hang during S3 wakeup (BZ#2218025)

  • OCS 4.8, cephfs kernel crash: mds_dispatch ceph_handle_snap unable to handle kernel NULL (BZ#2218271)

  • st_gmac: tx-checksum offload on vlan is not consistent with st_gmac interface (BZ#2219907)

  • refcount_t overflow often happens in mem_cgroup_id_get_online() (BZ#2221010)

  • avoid unnecessary page fault retires on shared memory types (BZ#2221100)

  • enable conntrack clash resolution for GRE (BZ#2223542)

  • ice: avoid bonding causing auxiliary plug/unplug under RTNL lock (BZ#2224515)

  • libceph: harden msgr2.1 frame segment length checks [8.x] (BZ#2227073)

  • Important iavf bug fixes July 2023 (BZ#2228161)

  • i40e error: Cannot set interface MAC/vlanid to 1e:b7:e2:02:b1:aa/0 for ifname ens4f0 vf 0: Resource temporarily unavailable (BZ#2228163)

  • oops on cifs_mount due to null tcon (BZ#2229128)

  • iptables argument “–suppl-groups” in extension “owner” does not work in RHEL8 (BZ#2229715)

  • Hyper-V RHEL 8: incomplete fc_transport implementation in storvsc causes null dereference in fc_timed_out() (BZ#2230743)

  • Withdrawal: GFS2: could not freeze filesystem: -16 (BZ#2231825)

  • RHEL 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)

  • RHEL-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)

  • Intel 8.9 iavf: Driver Update (BZ#2232399)

  • Hyper-V RHEL-8 hv_storvsc driver logging excessive storvsc_log events for storvsc_on_io_completion() function (BZ#2233227)

Enhancement(s):

  • Intel 8.9 FEAT, EMR perf: Add EMR CPU PMU support (BZ#2230152)

  • Intel 8.9 FEAT, SPR EMR power: Add uncore frequency control driver (BZ#2230158)

  • Intel 8.9 FEAT EMR perf: RAPL PMU support on EMR (BZ#2230162)

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.003

Percentile

69.3%