Security update for the Linux Kernel
Announcement ID: | SUSE-SU-2023:4095-1 |
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Rating: | important |
References: | |
Cross-References: | |
CVSS scores: |
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Affected Products: |
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An update that solves 14 vulnerabilities and has eight security fixes can now be installed.
Description:
The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2023-1206: Fixed a hash collision flaw in the IPv6 connection lookup table. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95% (bsc#1212703).
- CVE-2023-42753: Fixed an array indexing vulnerability in the netfilter subsystem. This issue may have allowed a local user to crash the system or potentially escalate their privileges on the system. (bsc#1215150)
- CVE-2023-4389: Fixed a a double decrement of the reference count flaw in the btrfs filesystem a double decrement of the reference count, which may have allowed a local attacker with user privilege to crash the system or may lead to leaked internal kernel information. (bsc#1214351)
- CVE-2023-4921: Fixed a use-after-free vulnerability in the sch_qfq component which could be exploited to achieve local privilege escalation. (bsc#1215275)
- CVE-2023-23454: Fixed a type-confusion in the CBQ network scheduler (bsc#1207036).
- CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1213812).
- CVE-2023-4622: Fixed a use-after-free vulnerability in the af_unix component which could be exploited to achieve local privilege escalation. (bsc#1215117)
- CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
- CVE-2020-36766: Fixed an issue in drivers/media/cec/core/cec-api.c which could leaks one byte of kernel memory on specific hardware to unprivileged users. (bsc#1215299)
- CVE-2023-1859: Fixed a use-after-free flaw in Xen transport for 9pfs. This flaw could allow a local attacker to crash the system due to a race problem, possibly leading to a kernel information leak. (bsc#1210169)
- CVE-2023-2177: Fixed a null pointer dereference issue in the sctp network protocol which could allow a user to crash the system or potentially cause a denial of service. (bsc#1210643)
- CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
- CVE-2023-40283: Fixed use-after-free in l2cap_sock_ready_cb (bsc#1214233).
- CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).
The following non-security bugs were fixed:
- bnx2x: new flag for track HW resource allocation (bsc#1202845 bsc#1215322).
- locking/rwsem: Disable reader optimistic spinning (bnc#1176588).
- mkspec: Allow unsupported KMPs (bsc#1214386)
- scsi: qedf: Add synchronization between I/O completions and abort (bsc#1210658).
- x86/pkeys: Revert a5eff7259790 ("x86/pkeys: Add PKRU value to init_fpstate") (bsc#1215356).
- x86/srso: Do not probe microcode in a guest (git-fixes).
- x86/srso: Fix SBPB enablement for spec_rstack_overflow=off (git-fixes).
- x86/srso: Fix srso_show_state() side effect (git-fixes).
- x86/srso: Set CPUID feature bits independently of bug or mitigation status (git-fixes).
Special Instructions and Notes:
- Please reboot the system after installing this update.
Patch Instructions:
To install this SUSE update use the SUSE recommended
installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
-
openSUSE Leap 15.3
zypper in -t patch SUSE-2023-4095=1
-
openSUSE Leap 15.4
zypper in -t patch openSUSE-SLE-15.4-2023-4095=1
-
SUSE Linux Enterprise Live Patching 15-SP3
zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2023-4095=1
Please note that this is the initial kernel livepatch without fixes itself, this package is later updated by separate standalone kernel livepatch updates. -
SUSE Linux Enterprise High Availability Extension 15 SP3
zypper in -t patch SUSE-SLE-Product-HA-15-SP3-2023-4095=1
-
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP3
zypper in -t patch SUSE-SLE-Product-HPC-15-SP3-ESPOS-2023-4095=1
-
SUSE Linux Enterprise High Performance Computing LTSS 15 SP3
zypper in -t patch SUSE-SLE-Product-HPC-15-SP3-LTSS-2023-4095=1
-
SUSE Linux Enterprise Server 15 SP3 LTSS 15-SP3
zypper in -t patch SUSE-SLE-Product-SLES-15-SP3-LTSS-2023-4095=1
-
SUSE Linux Enterprise Server for SAP Applications 15 SP3
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP3-2023-4095=1
-
SUSE Manager Proxy 4.2
zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Proxy-4.2-2023-4095=1
-
SUSE Manager Retail Branch Server 4.2
zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.2-2023-4095=1
-
SUSE Manager Server 4.2
zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Server-4.2-2023-4095=1
-
SUSE Enterprise Storage 7.1
zypper in -t patch SUSE-Storage-7.1-2023-4095=1
-
SUSE Linux Enterprise Micro 5.1
zypper in -t patch SUSE-SUSE-MicroOS-5.1-2023-4095=1
-
SUSE Linux Enterprise Micro 5.2
zypper in -t patch SUSE-SUSE-MicroOS-5.2-2023-4095=1
-
SUSE Linux Enterprise Micro for Rancher 5.2
zypper in -t patch SUSE-SUSE-MicroOS-5.2-2023-4095=1
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