Security update for the Linux Kernel RT (Live Patch 2 for SLE 15 SP6) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2024:3775-1 Final 1 1 2024-10-29T16:03:49Z current 2024-10-29T16:03:49Z 2024-10-29T16:03:49Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel RT (Live Patch 2 for SLE 15 SP6) This update for the Linux Kernel 6.4.0-150600_10_8 fixes one issue. The following security issue was fixed: - CVE-2023-52752: smb: client: fix use-after-free bug in cifs_debug_data_proc_show() (bsc#1225819). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2024-3775,SUSE-SLE-Module-Live-Patching-15-SP6-2024-3775 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-20243775-1/ Link for SUSE-SU-2024:3775-1 https://lists.suse.com/pipermail/sle-security-updates/2024-October/019693.html E-Mail link for SUSE-SU-2024:3775-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1225819 SUSE Bug 1225819 https://www.suse.com/security/cve/CVE-2023-52752/ SUSE CVE CVE-2023-52752 page SUSE Linux Enterprise Live Patching 15 SP6 kernel-livepatch-6_4_0-150600_10_8-rt-2-150600.1.6.1 kernel-livepatch-6_4_0-150600_10_8-rt-2-150600.1.6.1 as a component of SUSE Linux Enterprise Live Patching 15 SP6 In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free bug in cifs_debug_data_proc_show() Skip SMB sessions that are being teared down (e.g. @ses->ses_status == SES_EXITING) in cifs_debug_data_proc_show() to avoid use-after-free in @ses. This fixes the following GPF when reading from /proc/fs/cifs/DebugData while mounting and umounting [ 816.251274] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6d81: 0000 [#1] PREEMPT SMP NOPTI ... [ 816.260138] Call Trace: [ 816.260329] <TASK> [ 816.260499] ? die_addr+0x36/0x90 [ 816.260762] ? exc_general_protection+0x1b3/0x410 [ 816.261126] ? asm_exc_general_protection+0x26/0x30 [ 816.261502] ? cifs_debug_tcon+0xbd/0x240 [cifs] [ 816.261878] ? cifs_debug_tcon+0xab/0x240 [cifs] [ 816.262249] cifs_debug_data_proc_show+0x516/0xdb0 [cifs] [ 816.262689] ? seq_read_iter+0x379/0x470 [ 816.262995] seq_read_iter+0x118/0x470 [ 816.263291] proc_reg_read_iter+0x53/0x90 [ 816.263596] ? srso_alias_return_thunk+0x5/0x7f [ 816.263945] vfs_read+0x201/0x350 [ 816.264211] ksys_read+0x75/0x100 [ 816.264472] do_syscall_64+0x3f/0x90 [ 816.264750] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 816.265135] RIP: 0033:0x7fd5e669d381 CVE-2023-52752 SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_8-rt-2-150600.1.6.1 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-20243775-1/ https://www.suse.com/security/cve/CVE-2023-52752.html CVE-2023-52752 https://bugzilla.suse.com/1225487 SUSE Bug 1225487 https://bugzilla.suse.com/1225819 SUSE Bug 1225819