Security update for the Linux Kernel (Live Patch 52 for SLE 15 SP3) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:02399-1 Final 1 1 2025-07-21T06:33:56Z current 2025-07-21T06:33:56Z 2025-07-21T06:33:56Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 52 for SLE 15 SP3) This update for the Linux Kernel 5.3.18-150300_59_188 fixes several issues. The following security issues were fixed: - CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238920). - CVE-2024-57893: ALSA: seq: oss: Fix races at processing SysEx messages (bsc#1235921). - CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238912). - CVE-2024-56558: nfsd: make sure exp active before svc_export_show (bsc#1243648). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-2399,SUSE-SLE-Module-Live-Patching-15-SP3-2025-2399 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-202502399-1/ Link for SUSE-SU-2025:02399-1 https://lists.suse.com/pipermail/sle-updates/2025-July/040798.html E-Mail link for SUSE-SU-2025:02399-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1235921 SUSE Bug 1235921 https://bugzilla.suse.com/1238912 SUSE Bug 1238912 https://bugzilla.suse.com/1238920 SUSE Bug 1238920 https://bugzilla.suse.com/1243648 SUSE Bug 1243648 https://www.suse.com/security/cve/CVE-2022-49465/ SUSE CVE CVE-2022-49465 page https://www.suse.com/security/cve/CVE-2024-56558/ SUSE CVE CVE-2024-56558 page https://www.suse.com/security/cve/CVE-2024-57893/ SUSE CVE CVE-2024-57893 page https://www.suse.com/security/cve/CVE-2025-21772/ SUSE CVE CVE-2025-21772 page SUSE Linux Enterprise Live Patching 15 SP3 kernel-livepatch-5_3_18-150300_59_188-default-7-150300.2.1 kernel-livepatch-5_3_18-150300_59_188-preempt-7-150300.2.1 kernel-livepatch-5_3_18-150300_59_188-default-7-150300.2.1 as a component of SUSE Linux Enterprise Live Patching 15 SP3 In the Linux kernel, the following vulnerability has been resolved: blk-throttle: Set BIO_THROTTLED when bio has been throttled 1.In current process, all bio will set the BIO_THROTTLED flag after __blk_throtl_bio(). 2.If bio needs to be throttled, it will start the timer and stop submit bio directly. Bio will submit in blk_throtl_dispatch_work_fn() when the timer expires.But in the current process, if bio is throttled. The BIO_THROTTLED will be set to bio after timer start. If the bio has been completed, it may cause use-after-free blow. BUG: KASAN: use-after-free in blk_throtl_bio+0x12f0/0x2c70 Read of size 2 at addr ffff88801b8902d4 by task fio/26380 dump_stack+0x9b/0xce print_address_description.constprop.6+0x3e/0x60 kasan_report.cold.9+0x22/0x3a blk_throtl_bio+0x12f0/0x2c70 submit_bio_checks+0x701/0x1550 submit_bio_noacct+0x83/0xc80 submit_bio+0xa7/0x330 mpage_readahead+0x380/0x500 read_pages+0x1c1/0xbf0 page_cache_ra_unbounded+0x471/0x6f0 do_page_cache_ra+0xda/0x110 ondemand_readahead+0x442/0xae0 page_cache_async_ra+0x210/0x300 generic_file_buffered_read+0x4d9/0x2130 generic_file_read_iter+0x315/0x490 blkdev_read_iter+0x113/0x1b0 aio_read+0x2ad/0x450 io_submit_one+0xc8e/0x1d60 __se_sys_io_submit+0x125/0x350 do_syscall_64+0x2d/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Allocated by task 26380: kasan_save_stack+0x19/0x40 __kasan_kmalloc.constprop.2+0xc1/0xd0 kmem_cache_alloc+0x146/0x440 mempool_alloc+0x125/0x2f0 bio_alloc_bioset+0x353/0x590 mpage_alloc+0x3b/0x240 do_mpage_readpage+0xddf/0x1ef0 mpage_readahead+0x264/0x500 read_pages+0x1c1/0xbf0 page_cache_ra_unbounded+0x471/0x6f0 do_page_cache_ra+0xda/0x110 ondemand_readahead+0x442/0xae0 page_cache_async_ra+0x210/0x300 generic_file_buffered_read+0x4d9/0x2130 generic_file_read_iter+0x315/0x490 blkdev_read_iter+0x113/0x1b0 aio_read+0x2ad/0x450 io_submit_one+0xc8e/0x1d60 __se_sys_io_submit+0x125/0x350 do_syscall_64+0x2d/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 0: kasan_save_stack+0x19/0x40 kasan_set_track+0x1c/0x30 kasan_set_free_info+0x1b/0x30 __kasan_slab_free+0x111/0x160 kmem_cache_free+0x94/0x460 mempool_free+0xd6/0x320 bio_free+0xe0/0x130 bio_put+0xab/0xe0 bio_endio+0x3a6/0x5d0 blk_update_request+0x590/0x1370 scsi_end_request+0x7d/0x400 scsi_io_completion+0x1aa/0xe50 scsi_softirq_done+0x11b/0x240 blk_mq_complete_request+0xd4/0x120 scsi_mq_done+0xf0/0x200 virtscsi_vq_done+0xbc/0x150 vring_interrupt+0x179/0x390 __handle_irq_event_percpu+0xf7/0x490 handle_irq_event_percpu+0x7b/0x160 handle_irq_event+0xcc/0x170 handle_edge_irq+0x215/0xb20 common_interrupt+0x60/0x120 asm_common_interrupt+0x1e/0x40 Fix this by move BIO_THROTTLED set into the queue_lock. CVE-2022-49465 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_188-default-7-150300.2.1 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/2025/suse-su-202502399-1/ https://www.suse.com/security/cve/CVE-2022-49465.html CVE-2022-49465 https://bugzilla.suse.com/1238919 SUSE Bug 1238919 https://bugzilla.suse.com/1238920 SUSE Bug 1238920 In the Linux kernel, the following vulnerability has been resolved: nfsd: make sure exp active before svc_export_show The function `e_show` was called with protection from RCU. This only ensures that `exp` will not be freed. Therefore, the reference count for `exp` can drop to zero, which will trigger a refcount use-after-free warning when `exp_get` is called. To resolve this issue, use `cache_get_rcu` to ensure that `exp` remains active. ------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 3 PID: 819 at lib/refcount.c:25 refcount_warn_saturate+0xb1/0x120 CPU: 3 UID: 0 PID: 819 Comm: cat Not tainted 6.12.0-rc3+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 RIP: 0010:refcount_warn_saturate+0xb1/0x120 ... Call Trace: <TASK> e_show+0x20b/0x230 [nfsd] seq_read_iter+0x589/0x770 seq_read+0x1e5/0x270 vfs_read+0x125/0x530 ksys_read+0xc1/0x160 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e CVE-2024-56558 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_188-default-7-150300.2.1 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/2025/suse-su-202502399-1/ https://www.suse.com/security/cve/CVE-2024-56558.html CVE-2024-56558 https://bugzilla.suse.com/1235100 SUSE Bug 1235100 https://bugzilla.suse.com/1243648 SUSE Bug 1243648 In the Linux kernel, the following vulnerability has been resolved: ALSA: seq: oss: Fix races at processing SysEx messages OSS sequencer handles the SysEx messages split in 6 bytes packets, and ALSA sequencer OSS layer tries to combine those. It stores the data in the internal buffer and this access is racy as of now, which may lead to the out-of-bounds access. As a temporary band-aid fix, introduce a mutex for serializing the process of the SysEx message packets. CVE-2024-57893 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_188-default-7-150300.2.1 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/2025/suse-su-202502399-1/ https://www.suse.com/security/cve/CVE-2024-57893.html CVE-2024-57893 https://bugzilla.suse.com/1235920 SUSE Bug 1235920 https://bugzilla.suse.com/1235921 SUSE Bug 1235921 In the Linux kernel, the following vulnerability has been resolved: partitions: mac: fix handling of bogus partition table Fix several issues in partition probing: - The bailout for a bad partoffset must use put_dev_sector(), since the preceding read_part_sector() succeeded. - If the partition table claims a silly sector size like 0xfff bytes (which results in partition table entries straddling sector boundaries), bail out instead of accessing out-of-bounds memory. - We must not assume that the partition table contains proper NUL termination - use strnlen() and strncmp() instead of strlen() and strcmp(). CVE-2025-21772 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_188-default-7-150300.2.1 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/2025/suse-su-202502399-1/ https://www.suse.com/security/cve/CVE-2025-21772.html CVE-2025-21772 https://bugzilla.suse.com/1238911 SUSE Bug 1238911 https://bugzilla.suse.com/1238912 SUSE Bug 1238912