Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP5) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2024:1039-1 Final 1 1 2024-03-28T10:04:44Z current 2024-03-28T10:04:44Z 2024-03-28T10:04:44Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP5) This update for the Linux Kernel 5.14.21-150500_53 fixes several issues. The following security issues were fixed: - CVE-2023-6531: Fixed a use-after-free flaw due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic()on the socket that the SKB is queued on (bsc#1218487). - CVE-2023-46813: Fixed a local privilege escalation with user-space programs that have access to MMIO regions (bsc#1216898). - CVE-2023-39191: Fixed a lack of validation of dynamic pointers within user-supplied eBPF programs that may have allowed an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code. (bsc#1215863) - CVE-2023-51779: Fixed a use-after-free because of a bt_sock_ioctl race condition in bt_sock_recvmsg (bsc#1218610). - CVE-2023-0461: Fixed use-after-free in icsk_ulp_data (bsc#1208911). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2024-1039,SUSE-SLE-Module-Live-Patching-15-SP5-2024-1039 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2024/suse-su-20241039-1/ Link for SUSE-SU-2024:1039-1 https://lists.suse.com/pipermail/sle-security-updates/2024-March/018234.html E-Mail link for SUSE-SU-2024:1039-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1208911 SUSE Bug 1208911 https://bugzilla.suse.com/1215887 SUSE Bug 1215887 https://bugzilla.suse.com/1216898 SUSE Bug 1216898 https://bugzilla.suse.com/1218487 SUSE Bug 1218487 https://bugzilla.suse.com/1218610 SUSE Bug 1218610 https://www.suse.com/security/cve/CVE-2023-0461/ SUSE CVE CVE-2023-0461 page https://www.suse.com/security/cve/CVE-2023-39191/ SUSE CVE CVE-2023-39191 page https://www.suse.com/security/cve/CVE-2023-46813/ SUSE CVE CVE-2023-46813 page https://www.suse.com/security/cve/CVE-2023-51779/ SUSE CVE CVE-2023-51779 page https://www.suse.com/security/cve/CVE-2023-6531/ SUSE CVE CVE-2023-6531 page SUSE Linux Enterprise Live Patching 15 SP5 kernel-livepatch-5_14_21-150500_53-default-9-150500.6.2 kernel-livepatch-5_14_21-150500_53-default-9-150500.6.2 as a component of SUSE Linux Enterprise Live Patching 15 SP5 There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege. There is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock. When CONFIG_TLS is enabled, user can install a tls context (struct tls_context) on a connected tcp socket. The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is created from the listener, the context is inherited and vulnerable. The setsockopt TCP_ULP operation does not require any privilege. We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c CVE-2023-0461 SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_53-default-9-150500.6.2 important 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2024/suse-su-20241039-1/ https://www.suse.com/security/cve/CVE-2023-0461.html CVE-2023-0461 https://bugzilla.suse.com/1208787 SUSE Bug 1208787 https://bugzilla.suse.com/1208911 SUSE Bug 1208911 https://bugzilla.suse.com/1211833 SUSE Bug 1211833 https://bugzilla.suse.com/1217079 SUSE Bug 1217079 https://bugzilla.suse.com/1218514 SUSE Bug 1218514 An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel. CVE-2023-39191 SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_53-default-9-150500.6.2 important 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2024/suse-su-20241039-1/ https://www.suse.com/security/cve/CVE-2023-39191.html CVE-2023-39191 https://bugzilla.suse.com/1215863 SUSE Bug 1215863 https://bugzilla.suse.com/1215887 SUSE Bug 1215887 An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it. CVE-2023-46813 SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_53-default-9-150500.6.2 moderate 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2024/suse-su-20241039-1/ https://www.suse.com/security/cve/CVE-2023-46813.html CVE-2023-46813 https://bugzilla.suse.com/1212649 SUSE Bug 1212649 https://bugzilla.suse.com/1216896 SUSE Bug 1216896 bt_sock_recvmsg in net/bluetooth/af_bluetooth.c in the Linux kernel through 6.6.8 has a use-after-free because of a bt_sock_ioctl race condition. CVE-2023-51779 SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_53-default-9-150500.6.2 moderate 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2024/suse-su-20241039-1/ https://www.suse.com/security/cve/CVE-2023-51779.html CVE-2023-51779 https://bugzilla.suse.com/1218559 SUSE Bug 1218559 https://bugzilla.suse.com/1218610 SUSE Bug 1218610 https://bugzilla.suse.com/1220015 SUSE Bug 1220015 https://bugzilla.suse.com/1220191 SUSE Bug 1220191 https://bugzilla.suse.com/1221578 SUSE Bug 1221578 https://bugzilla.suse.com/1221598 SUSE Bug 1221598 A use-after-free flaw was found in the Linux Kernel due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic() on the socket that the SKB is queued on. CVE-2023-6531 SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_53-default-9-150500.6.2 moderate 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2024/suse-su-20241039-1/ https://www.suse.com/security/cve/CVE-2023-6531.html CVE-2023-6531 https://bugzilla.suse.com/1218447 SUSE Bug 1218447 https://bugzilla.suse.com/1218487 SUSE Bug 1218487