Security update for the Linux Kernel (Live Patch 54 for SLE 12 SP5) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2024:1694-1 Final 1 1 2024-05-20T15:34:35Z current 2024-05-20T15:34:35Z 2024-05-20T15:34:35Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 54 for SLE 12 SP5) This update for the Linux Kernel 4.12.14-122_201 fixes several issues. The following security issues were fixed: - CVE-2022-48651: Fixed an out-of-bound bug in ipvlan caused by unset skb->mac_header (bsc#1223514). - CVE-2023-6546: Fixed a race condition that could lead to a use-after-free in the GSM 0710 tty multiplexor (bsc#1222685). - CVE-2023-1829: Fixed a use-after-free in tcindex that can lead local privilege escalation (bsc#1210619). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2024-1694,SUSE-SLE-Live-Patching-12-SP5-2024-1694 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-20241694-1/ Link for SUSE-SU-2024:1694-1 https://lists.suse.com/pipermail/sle-security-updates/2024-May/018550.html E-Mail link for SUSE-SU-2024:1694-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1210619 SUSE Bug 1210619 https://bugzilla.suse.com/1222685 SUSE Bug 1222685 https://bugzilla.suse.com/1223514 SUSE Bug 1223514 https://www.suse.com/security/cve/CVE-2022-48651/ SUSE CVE CVE-2022-48651 page https://www.suse.com/security/cve/CVE-2023-1829/ SUSE CVE CVE-2023-1829 page https://www.suse.com/security/cve/CVE-2023-6546/ SUSE CVE CVE-2023-6546 page SUSE Linux Enterprise Live Patching 12 SP5 kgraft-patch-4_12_14-122_201-default-3-8.10.1 kgraft-patch-4_12_14-122_201-default-3-8.10.1 as a component of SUSE Linux Enterprise Live Patching 12 SP5 In the Linux kernel, the following vulnerability has been resolved: ipvlan: Fix out-of-bound bugs caused by unset skb->mac_header If an AF_PACKET socket is used to send packets through ipvlan and the default xmit function of the AF_PACKET socket is changed from dev_queue_xmit() to packet_direct_xmit() via setsockopt() with the option name of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset and remains as the initial value of 65535, this may trigger slab-out-of-bounds bugs as following: ================================================================= UG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan] PU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6 ardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 all Trace: print_address_description.constprop.0+0x1d/0x160 print_report.cold+0x4f/0x112 kasan_report+0xa3/0x130 ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan] ipvlan_start_xmit+0x29/0xa0 [ipvlan] __dev_direct_xmit+0x2e2/0x380 packet_direct_xmit+0x22/0x60 packet_snd+0x7c9/0xc40 sock_sendmsg+0x9a/0xa0 __sys_sendto+0x18a/0x230 __x64_sys_sendto+0x74/0x90 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd The root cause is: 1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW and skb->protocol is not specified as in packet_parse_headers() 2. packet_direct_xmit() doesn't reset skb->mac_header as dev_queue_xmit() In this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() is called. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() which use "skb->head + skb->mac_header", out-of-bound access occurs. This patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2() and reset mac header in multicast to solve this out-of-bound bug. CVE-2022-48651 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_201-default-3-8.10.1 important 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-20241694-1/ https://www.suse.com/security/cve/CVE-2022-48651.html CVE-2022-48651 https://bugzilla.suse.com/1223513 SUSE Bug 1223513 https://bugzilla.suse.com/1223514 SUSE Bug 1223514 A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28. CVE-2023-1829 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_201-default-3-8.10.1 important 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-20241694-1/ https://www.suse.com/security/cve/CVE-2023-1829.html CVE-2023-1829 https://bugzilla.suse.com/1210335 SUSE Bug 1210335 https://bugzilla.suse.com/1210619 SUSE Bug 1210619 https://bugzilla.suse.com/1217444 SUSE Bug 1217444 https://bugzilla.suse.com/1217531 SUSE Bug 1217531 https://bugzilla.suse.com/1220886 SUSE Bug 1220886 https://bugzilla.suse.com/1228311 SUSE Bug 1228311 A race condition was found in the GSM 0710 tty multiplexor in the Linux kernel. This issue occurs when two threads execute the GSMIOC_SETCONF ioctl on the same tty file descriptor with the gsm line discipline enabled, and can lead to a use-after-free problem on a struct gsm_dlci while restarting the gsm mux. This could allow a local unprivileged user to escalate their privileges on the system. CVE-2023-6546 SUSE Linux Enterprise Live Patching 12 SP5:kgraft-patch-4_12_14-122_201-default-3-8.10.1 important 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-20241694-1/ https://www.suse.com/security/cve/CVE-2023-6546.html CVE-2023-6546 https://bugzilla.suse.com/1218335 SUSE Bug 1218335 https://bugzilla.suse.com/1222685 SUSE Bug 1222685