Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP7) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:02873-1 Final 1 1 2025-08-19T04:03:56Z current 2025-08-19T04:03:56Z 2025-08-19T04:03:56Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP7) This update for the Linux Kernel 6.4.0-150700_7_3 fixes several issues. The following security issues were fixed: - CVE-2025-38494: HID: core: do not bypass hid_hw_raw_request (bsc#1247350). - CVE-2025-38495: HID: core: ensure the allocated report buffer can contain the reserved report ID (bsc#1247351). - CVE-2025-38083: net_sched: prio: fix a race in prio_tune() (bsc#1245350). - CVE-2025-37752: net_sched: sch_sfq: move the limit validation (bsc#1245776). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-2873,SUSE-SLE-Module-Live-Patching-15-SP7-2025-2873 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-202502873-1/ Link for SUSE-SU-2025:02873-1 https://lists.suse.com/pipermail/sle-updates/2025-August/041264.html E-Mail link for SUSE-SU-2025:02873-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1244337 SUSE Bug 1244337 https://bugzilla.suse.com/1245350 SUSE Bug 1245350 https://bugzilla.suse.com/1245776 SUSE Bug 1245776 https://bugzilla.suse.com/1247350 SUSE Bug 1247350 https://bugzilla.suse.com/1247351 SUSE Bug 1247351 https://www.suse.com/security/cve/CVE-2025-37752/ SUSE CVE CVE-2025-37752 page https://www.suse.com/security/cve/CVE-2025-38083/ SUSE CVE CVE-2025-38083 page https://www.suse.com/security/cve/CVE-2025-38494/ SUSE CVE CVE-2025-38494 page https://www.suse.com/security/cve/CVE-2025-38495/ SUSE CVE CVE-2025-38495 page SUSE Linux Enterprise Live Patching 15 SP7 kernel-livepatch-6_4_0-150700_7_3-rt-2-150700.2.1 kernel-livepatch-6_4_0-150700_7_3-rt-2-150700.2.1 as a component of SUSE Linux Enterprise Live Patching 15 SP7 In the Linux kernel, the following vulnerability has been resolved: net_sched: sch_sfq: move the limit validation It is not sufficient to directly validate the limit on the data that the user passes as it can be updated based on how the other parameters are changed. Move the check at the end of the configuration update process to also catch scenarios where the limit is indirectly updated, for example with the following configurations: tc qdisc add dev dummy0 handle 1: root sfq limit 2 flows 1 depth 1 tc qdisc add dev dummy0 handle 1: root sfq limit 2 flows 1 divisor 1 This fixes the following syzkaller reported crash: ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in net/sched/sch_sfq.c:203:6 index 65535 is out of range for type 'struct sfq_head[128]' CPU: 1 UID: 0 PID: 3037 Comm: syz.2.16 Not tainted 6.14.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x201/0x300 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0xf5/0x120 lib/ubsan.c:429 sfq_link net/sched/sch_sfq.c:203 [inline] sfq_dec+0x53c/0x610 net/sched/sch_sfq.c:231 sfq_dequeue+0x34e/0x8c0 net/sched/sch_sfq.c:493 sfq_reset+0x17/0x60 net/sched/sch_sfq.c:518 qdisc_reset+0x12e/0x600 net/sched/sch_generic.c:1035 tbf_reset+0x41/0x110 net/sched/sch_tbf.c:339 qdisc_reset+0x12e/0x600 net/sched/sch_generic.c:1035 dev_reset_queue+0x100/0x1b0 net/sched/sch_generic.c:1311 netdev_for_each_tx_queue include/linux/netdevice.h:2590 [inline] dev_deactivate_many+0x7e5/0xe70 net/sched/sch_generic.c:1375 CVE-2025-37752 SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_3-rt-2-150700.2.1 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-202502873-1/ https://www.suse.com/security/cve/CVE-2025-37752.html CVE-2025-37752 https://bugzilla.suse.com/1242504 SUSE Bug 1242504 https://bugzilla.suse.com/1245776 SUSE Bug 1245776 In the Linux kernel, the following vulnerability has been resolved: net_sched: prio: fix a race in prio_tune() Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock. CVE-2025-38083 SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_3-rt-2-150700.2.1 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-202502873-1/ https://www.suse.com/security/cve/CVE-2025-38083.html CVE-2025-38083 https://bugzilla.suse.com/1245183 SUSE Bug 1245183 https://bugzilla.suse.com/1245350 SUSE Bug 1245350 In the Linux kernel, the following vulnerability has been resolved: HID: core: do not bypass hid_hw_raw_request hid_hw_raw_request() is actually useful to ensure the provided buffer and length are valid. Directly calling in the low level transport driver function bypassed those checks and allowed invalid paramto be used. CVE-2025-38494 SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_3-rt-2-150700.2.1 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-202502873-1/ https://www.suse.com/security/cve/CVE-2025-38494.html CVE-2025-38494 https://bugzilla.suse.com/1247349 SUSE Bug 1247349 https://bugzilla.suse.com/1247350 SUSE Bug 1247350 In the Linux kernel, the following vulnerability has been resolved: HID: core: ensure the allocated report buffer can contain the reserved report ID When the report ID is not used, the low level transport drivers expect the first byte to be 0. However, currently the allocated buffer not account for that extra byte, meaning that instead of having 8 guaranteed bytes for implement to be working, we only have 7. CVE-2025-38495 SUSE Linux Enterprise Live Patching 15 SP7:kernel-livepatch-6_4_0-150700_7_3-rt-2-150700.2.1 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-202502873-1/ https://www.suse.com/security/cve/CVE-2025-38495.html CVE-2025-38495 https://bugzilla.suse.com/1247348 SUSE Bug 1247348 https://bugzilla.suse.com/1247351 SUSE Bug 1247351