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AlmaLinux kernel packages could let attackers run code
published 3 years ago
Summary
The Linux kernel used in AlmaLinux (including bpftool, kernel, kernel‑abi‑stablelists, kernel‑core, and kernel‑cross‑headers) has several bugs that could allow a remote attacker to write beyond memory limits, corrupt data, or execute unauthorized commands, especially affecting networking, Bluetooth, and AMD hardware. Apply the latest kernel update from AlmaLinux as soon as possible to protect your systems.
What to do
- Update almalinux bpftool to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-abi-stablelists to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-core to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-cross-headers to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-debug to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-debug-core to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-debug-devel to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-debug-modules to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-debug-modules-extra to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-devel to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-doc to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-headers to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-modules to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-modules-extra to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-tools to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-tools-libs to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-tools-libs-devel to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-zfcpdump to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-zfcpdump-core to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-zfcpdump-devel to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-zfcpdump-modules to version 4.18.0-477.27.2.el8_8.
- Update almalinux kernel-zfcpdump-modules-extra to version 4.18.0-477.27.2.el8_8.
- Update almalinux perf to version 4.18.0-477.27.2.el8_8.
- Update almalinux python3-perf to version 4.18.0-477.27.2.el8_8.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| AlmaLinux:8 | almalinux | bpftool |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-abi-stablelists |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-core |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-cross-headers |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-debug |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-debug-core |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-debug-devel |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-debug-modules |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-debug-modules-extra |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-devel |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-doc |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-headers |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-modules |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-modules-extra |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-tools |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-tools-libs |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-tools-libs-devel |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-zfcpdump |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-zfcpdump-core |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-zfcpdump-devel |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-zfcpdump-modules |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | kernel-zfcpdump-modules-extra |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | perf |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
| AlmaLinux:8 | almalinux | python3-perf |
< 4.18.0-477.27.2.el8_8 Fix: upgrade to 4.18.0-477.27.2.el8_8
|
Original advisory text
Important: kernel security, bug fix, and enhancement update
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 AlmaLinux8 (BZ#2229715)
* Hyper-V AlmaLinux 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)
* AlmaLinux 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)
* AlmaLinux-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)
* Intel 8.9 iavf: Driver Update (BZ#2232399)
* Hyper-V AlmaLinux-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)
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 AlmaLinux8 (BZ#2229715)
* Hyper-V AlmaLinux 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)
* AlmaLinux 8 Hyper-V: Excessive hv_storvsc driver logging with srb_status SRB_STATUS_INTERNAL_ERROR (0x30) (BZ#2231988)
* AlmaLinux-8: crypto: rng - Fix lock imbalance in crypto_del_rng (BZ#2232215)
* Intel 8.9 iavf: Driver Update (BZ#2232399)
* Hyper-V AlmaLinux-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)
References
- https://access.redhat.com/errata/RHSA-2023:5244 Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2023-2002 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-20593 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-3090 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-3390 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-35001 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-35788 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-3776 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4004 Third Party Advisory
- https://bugzilla.redhat.com/2187308 Third Party Advisory
- https://bugzilla.redhat.com/2213260 Third Party Advisory
- https://bugzilla.redhat.com/2215768 Third Party Advisory
- https://bugzilla.redhat.com/2217845 Third Party Advisory
- https://bugzilla.redhat.com/2218672 Third Party Advisory
- https://bugzilla.redhat.com/2220892 Third Party Advisory
- https://bugzilla.redhat.com/2225097 Third Party Advisory
- https://bugzilla.redhat.com/2225275 Third Party Advisory
- https://errata.almalinux.org/8/ALSA-2023-5244.html Vendor Advisory
Timeline
Published19 Sep 2023
Updated29 Oct 2026
First seen29 Oct 2026
Sources
ALSA-2023:5244 · OSV
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