Security update for the Linux Kernel (Live Patch 12 for SLE 15 SP5) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:01668-1 Final 1 1 2025-05-22T19:34:13Z current 2025-05-22T19:34:13Z 2025-05-22T19:34:13Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 12 for SLE 15 SP5) This update for the Linux Kernel 5.14.21-150500_55_59 fixes several issues. The following security issues were fixed: - CVE-2024-53156: wifi: ath9k: add range check for conn_rsp_epid in htc_connect_service() (bsc#1234847). - CVE-2024-43882: Fixed ToCToU between perm check and set-uid/gid usage (bsc#1229504). - CVE-2024-50115: KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory (bsc#1233019). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-1664,SUSE-2025-1666,SUSE-2025-1667,SUSE-2025-1668,SUSE-2025-1673,SUSE-2025-1674,SUSE-SLE-Module-Live-Patching-15-SP3-2025-1668,SUSE-SLE-Module-Live-Patching-15-SP4-2025-1666,SUSE-SLE-Module-Live-Patching-15-SP5-2025-1673 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-202501668-1/ Link for SUSE-SU-2025:01668-1 https://lists.suse.com/pipermail/sle-updates/2025-May/039314.html E-Mail link for SUSE-SU-2025:01668-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1229504 SUSE Bug 1229504 https://bugzilla.suse.com/1233019 SUSE Bug 1233019 https://bugzilla.suse.com/1234847 SUSE Bug 1234847 https://www.suse.com/security/cve/CVE-2024-43882/ SUSE CVE CVE-2024-43882 page https://www.suse.com/security/cve/CVE-2024-50115/ SUSE CVE CVE-2024-50115 page https://www.suse.com/security/cve/CVE-2024-53156/ SUSE CVE CVE-2024-53156 page SUSE Linux Enterprise Live Patching 15 SP3 SUSE Linux Enterprise Live Patching 15 SP4 SUSE Linux Enterprise Live Patching 15 SP5 kernel-livepatch-5_3_18-150300_59_170-default-11-150300.2.2 kernel-livepatch-5_3_18-150300_59_170-preempt-11-150300.2.2 kernel-livepatch-5_14_21-150400_24_125-default-12-150400.2.2 kernel-livepatch-5_14_21-150400_24_128-default-10-150400.2.2 kernel-livepatch-5_3_18-150300_59_158-default-18-150300.2.2 kernel-livepatch-5_3_18-150300_59_158-preempt-18-150300.2.2 kernel-livepatch-5_14_21-150500_55_59-default-18-150500.2.2 kernel-livepatch-5_14_21-150500_55_65-default-16-150500.2.2 kernel-livepatch-5_3_18-150300_59_158-default-18-150300.2.2 as a component of SUSE Linux Enterprise Live Patching 15 SP3 kernel-livepatch-5_14_21-150400_24_125-default-12-150400.2.2 as a component of SUSE Linux Enterprise Live Patching 15 SP4 kernel-livepatch-5_14_21-150500_55_59-default-18-150500.2.2 as a component of SUSE Linux Enterprise Live Patching 15 SP5 In the Linux kernel, the following vulnerability has been resolved: exec: Fix ToCToU between perm check and set-uid/gid usage When opening a file for exec via do_filp_open(), permission checking is done against the file's metadata at that moment, and on success, a file pointer is passed back. Much later in the execve() code path, the file metadata (specifically mode, uid, and gid) is used to determine if/how to set the uid and gid. However, those values may have changed since the permissions check, meaning the execution may gain unintended privileges. For example, if a file could change permissions from executable and not set-id: ---------x 1 root root 16048 Aug 7 13:16 target to set-id and non-executable: ---S------ 1 root root 16048 Aug 7 13:16 target it is possible to gain root privileges when execution should have been disallowed. While this race condition is rare in real-world scenarios, it has been observed (and proven exploitable) when package managers are updating the setuid bits of installed programs. Such files start with being world-executable but then are adjusted to be group-exec with a set-uid bit. For example, "chmod o-x,u+s target" makes "target" executable only by uid "root" and gid "cdrom", while also becoming setuid-root: -rwxr-xr-x 1 root cdrom 16048 Aug 7 13:16 target becomes: -rwsr-xr-- 1 root cdrom 16048 Aug 7 13:16 target But racing the chmod means users without group "cdrom" membership can get the permission to execute "target" just before the chmod, and when the chmod finishes, the exec reaches brpm_fill_uid(), and performs the setuid to root, violating the expressed authorization of "only cdrom group members can setuid to root". Re-check that we still have execute permissions in case the metadata has changed. It would be better to keep a copy from the perm-check time, but until we can do that refactoring, the least-bad option is to do a full inode_permission() call (under inode lock). It is understood that this is safe against dead-locks, but hardly optimal. CVE-2024-43882 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_158-default-18-150300.2.2 SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_125-default-12-150400.2.2 SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_55_59-default-18-150500.2.2 moderate 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/2025/suse-su-202501668-1/ https://www.suse.com/security/cve/CVE-2024-43882.html CVE-2024-43882 https://bugzilla.suse.com/1229503 SUSE Bug 1229503 https://bugzilla.suse.com/1229504 SUSE Bug 1229504 In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory Ignore nCR3[4:0] when loading PDPTEs from memory for nested SVM, as bits 4:0 of CR3 are ignored when PAE paging is used, and thus VMRUN doesn't enforce 32-byte alignment of nCR3. In the absolute worst case scenario, failure to ignore bits 4:0 can result in an out-of-bounds read, e.g. if the target page is at the end of a memslot, and the VMM isn't using guard pages. Per the APM: The CR3 register points to the base address of the page-directory-pointer table. The page-directory-pointer table is aligned on a 32-byte boundary, with the low 5 address bits 4:0 assumed to be 0. And the SDM's much more explicit: 4:0 Ignored Note, KVM gets this right when loading PDPTRs, it's only the nSVM flow that is broken. CVE-2024-50115 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_158-default-18-150300.2.2 SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_125-default-12-150400.2.2 SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_55_59-default-18-150500.2.2 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/2025/suse-su-202501668-1/ https://www.suse.com/security/cve/CVE-2024-50115.html CVE-2024-50115 https://bugzilla.suse.com/1225742 SUSE Bug 1225742 https://bugzilla.suse.com/1232919 SUSE Bug 1232919 https://bugzilla.suse.com/1233019 SUSE Bug 1233019 In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: add range check for conn_rsp_epid in htc_connect_service() I found the following bug in my fuzzer: UBSAN: array-index-out-of-bounds in drivers/net/wireless/ath/ath9k/htc_hst.c:26:51 index 255 is out of range for type 'htc_endpoint [22]' CPU: 0 UID: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.11.0-rc6-dirty #14 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Workqueue: events request_firmware_work_func Call Trace: <TASK> dump_stack_lvl+0x180/0x1b0 __ubsan_handle_out_of_bounds+0xd4/0x130 htc_issue_send.constprop.0+0x20c/0x230 ? _raw_spin_unlock_irqrestore+0x3c/0x70 ath9k_wmi_cmd+0x41d/0x610 ? mark_held_locks+0x9f/0xe0 ... Since this bug has been confirmed to be caused by insufficient verification of conn_rsp_epid, I think it would be appropriate to add a range check for conn_rsp_epid to htc_connect_service() to prevent the bug from occurring. CVE-2024-53156 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_158-default-18-150300.2.2 SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_125-default-12-150400.2.2 SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_55_59-default-18-150500.2.2 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/2025/suse-su-202501668-1/ https://www.suse.com/security/cve/CVE-2024-53156.html CVE-2024-53156 https://bugzilla.suse.com/1234846 SUSE Bug 1234846 https://bugzilla.suse.com/1234847 SUSE Bug 1234847 https://bugzilla.suse.com/1234853 SUSE Bug 1234853