Summary
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)
Fixed packages 25
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | bpftool | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-abi-stablelists | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-core | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-cross-headers | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-debug | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-debug-core | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-debug-devel | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-debug-modules | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-debug-modules-extra | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-devel | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-doc | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-headers | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-modules | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-modules-extra | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-tools | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-tools-libs | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-tools-libs-devel | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-zfcpdump | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-zfcpdump-core | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-zfcpdump-devel | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-zfcpdump-modules | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | kernel-zfcpdump-modules-extra | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | perf | 4.18.0-477.27.2.el8_8 |
| AlmaLinux · 8 | python3-perf | 4.18.0-477.27.2.el8_8 |
Vulnerabilities 8
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High 7.8
Out-of-bounds write in Linux kernel's ipvlan network driver
A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to achieve local privilege escalation. The out-of-bounds write is caused by missing skb->cb initialization in the ipvlan network driver. The vulnerability is r…
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High 7.8CVE-2023-3390 Public exploit
Use-after-free in Linux kernel's netfilter subsystem
A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vu…
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High 7.8CVE-2023-35001 Public exploit
Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability
Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability; nft_byteorder poorly handled vm register contents when CAP_NET_ADMIN is in any user or network namespace
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High 7.8CVE-2023-35788 Public exploit
An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an o…
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High 7.8CVE-2023-3776 Public exploit
Use-after-free in Linux kernel's net/sched: cls_fw component
A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the refere…
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High 7.8
Kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()
A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their pr…
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Unscored —CVE-2023-2002 Public exploit
A vulnerability was found in the HCI sockets implementation due to a missing capability check in net/bluetooth/hci_sock…
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Unscored —CVE-2023-20593 Public exploit
An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access …
References
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report
https://access.redhat.com/security/cve/CVE-2023-2002
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report
https://access.redhat.com/security/cve/CVE-2023-20593
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report
https://access.redhat.com/security/cve/CVE-2023-3090
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report
https://access.redhat.com/security/cve/CVE-2023-3390
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report
https://access.redhat.com/security/cve/CVE-2023-35001
-
report
https://access.redhat.com/security/cve/CVE-2023-35788
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report
https://access.redhat.com/security/cve/CVE-2023-3776
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report
https://access.redhat.com/security/cve/CVE-2023-4004
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report
https://bugzilla.redhat.com/2187308
-
report
https://bugzilla.redhat.com/2213260
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report
https://bugzilla.redhat.com/2215768
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report
https://bugzilla.redhat.com/2217845
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report
https://bugzilla.redhat.com/2218672
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report
https://bugzilla.redhat.com/2220892
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report
https://bugzilla.redhat.com/2225097
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report
https://bugzilla.redhat.com/2225275
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advisory
https://errata.almalinux.org/8/ALSA-2023-5244.html