In the Linux kernel, the following vulnerability has been resolved:
hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs
Fan speed minimum can be enforced from sysfs. For example, setting current fan speed to 20 is used to enforce fan speed to be at 100% speed, 19 - to be not below 90% speed, etcetera. This feature provides ability to limit fan speed according to some system wise considerations, like absence of some replaceable units or high system ambient temperature.
Request for changing fan minimum speed is configuration request and can be set only through 'sysfs' write procedure. In this situation value of argument 'state' is above nominal fan speed maximum.
Return non-zero code in this case to avoid thermal_cooling_device_stats_update() call, because in this case statistics update violates thermal statistics table range. The issues is observed in case kernel is configured with option CONFIG_THERMAL_STATISTICS.
Here is the trace from KASAN: [ 159.506659] BUG: KASAN: slab-out-of-bounds in thermal_cooling_device_stats_update+0x7d/0xb0 [ 159.516016] Read of size 4 at addr ffff888116163840 by task hw-management.s/7444 [ 159.545625] Call Trace: [ 159.548366] dump_stack+0x92/0xc1 [ 159.552084] ? thermal_cooling_device_stats_update+0x7d/0xb0 [ 159.635869] thermal_zone_device_update+0x345/0x780 [ 159.688711] thermal_zone_device_set_mode+0x7d/0xc0 [ 159.694174] mlxsw_thermal_modules_init+0x48f/0x590 [mlxsw_core] [ 159.700972] ? mlxsw_thermal_set_cur_state+0x5a0/0x5a0 [mlxsw_core] [ 159.731827] mlxsw_thermal_init+0x763/0x880 [mlxsw_core] [ 160.070233] RIP: 0033:0x7fd995909970 [ 160.074239] Code: 73 01 c3 48 8b 0d 28 d5 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 99 2d 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff .. [ 160.095242] RSP: 002b:00007fff54f5d938 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 160.103722] RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 00007fd995909970 [ 160.111710] RDX: 0000000000000013 RSI: 0000000001906008 RDI: 0000000000000001 [ 160.119699] RBP: 0000000001906008 R08: 00007fd995bc9760 R09: 00007fd996210700 [ 160.127687] R10: 0000000000000073 R11: 0000000000000246 R12: 0000000000000013 [ 160.135673] R13: 0000000000000001 R14: 00007fd995bc8600 R15: 0000000000000013 [ 160.143671] [ 160.145338] Allocated by task 2924: [ 160.149242] kasan_save_stack+0x19/0x40 [ 160.153541] __kasan_kmalloc+0x7f/0xa0 [ 160.157743] __kmalloc+0x1a2/0x2b0 [ 160.161552] thermal_cooling_device_setup_sysfs+0xf9/0x1a0 [ 160.167687] __thermal_cooling_device_register+0x1b5/0x500 [ 160.173833] devm_thermal_of_cooling_device_register+0x60/0xa0 [ 160.180356] mlxreg_fan_probe+0x474/0x5e0 [mlxreg_fan] [ 160.248140] [ 160.249807] The buggy address belongs to the object at ffff888116163400 [ 160.249807] which belongs to the cache kmalloc-1k of size 1024 [ 160.263814] The buggy address is located 64 bytes to the right of [ 160.263814] 1024-byte region [ffff888116163400, ffff888116163800) [ 160.277536] The buggy address belongs to the page: [ 160.282898] page:0000000012275840 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888116167000 pfn:0x116160 [ 160.294872] head:0000000012275840 order:3 compound_mapcount:0 compound_pincount:0 [ 160.303251] flags: 0x200000000010200(slab|head|node=0|zone=2) [ 160.309694] raw: 0200000000010200 ffffea00046f7208 ffffea0004928208 ffff88810004dbc0 [ 160.318367] raw: ffff888116167000 00000000000a0006 00000001ffffffff 0000000000000000 [ 160.327033] page dumped because: kasan: bad access detected [ 160.333270] [ 160.334937] Memory state around the buggy address: [ 160.356469] >ffff888116163800: fc ..
CVSS Details
- CVSS 3.1 Base Score: 7.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-debug-coreUpgrade kernel-rt-modulesUpgrade kernel-toolsUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-coreUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-zfcpdump-modulesUpgrade kernel-cross-headersUpgrade kernel-tools-libs-develUpgrade kernel-rt-kvmUpgrade kernel-rt-modules-extraUpgrade kernel-rtUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-modules-extraUpgrade kernel-develUpgrade kernel-rt-debug-develUpgrade kernel-debug-develUpgrade kernel-rt-debug-kvmUpgrade kernel-docUpgrade kernel-modules-extraUpgrade kernel-rt-coreUpgrade kernel-coreUpgrade kernel-rt-debugUpgrade kernelUpgrade kernel-rt-develUpgrade kernel-debug-coreUpgrade kernel-zfcpdump-modules-extraUpgrade python3-perfUpgrade kernel-debugUpgrade kernel-headersUpgrade perfUpgrade kernel-zfcpdumpUpgrade kernel-zfcpdump-develUpgrade kernel-tools-libsUpgrade kernel-rt-debug-modulesUpgrade kernel-modules | Sep 26, 2024 | May 21, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | May 21, 2024 |
| Oracle_linux | — | Upgrade kernel | Oct 16, 2024 | May 21, 2024 |
| Redhat_linux | — | Upgrade kernel-rtUpgrade kernelNo solution exists | Sep 25, 2024 | May 21, 2024 |
| Rocky_linux | — | Upgrade kernel-debug-modulesUpgrade python3-perf-debuginfoUpgrade kernel-toolsUpgrade kernel-tools-libs-develUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-debugUpgrade kernel-rtUpgrade kernel-rt-kvmUpgrade kernel-tools-libsUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debug-debuginfoUpgrade kernel-develUpgrade kernel-rt-debug-coreUpgrade kernel-rt-modulesUpgrade kernel-rt-debuginfoUpgrade kernel-rt-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-develUpgrade kernel-cross-headersUpgrade bpftoolUpgrade kernelUpgrade python3-perfUpgrade kernel-rt-coreUpgrade bpftool-debuginfoUpgrade kernel-rt-debug-modules-extraUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-debug-kvmUpgrade kernel-coreUpgrade perfUpgrade kernel-debug-coreUpgrade kernel-debugUpgrade kernel-debuginfoUpgrade kernel-modulesUpgrade kernel-rt-debug-develUpgrade kernel-modules-extraUpgrade kernel-headersUpgrade kernel-debug-develUpgrade kernel-debug-debuginfoUpgrade perf-debuginfo | Oct 2, 2024 | May 21, 2024 |
| Suse | — | Upgrade kernel-rt-optionalUpgrade dtb-lgUpgrade kernel-default-livepatchUpgrade dtb-alteraUpgrade kernel-source-rtUpgrade kernel-debugUpgrade kernel-source-vanillaUpgrade dtb-amazonUpgrade kernel-kvmsmall-develUpgrade kernel-default-vdsoUpgrade ocfs2-kmp-rtUpgrade dtb-marvellUpgrade kernel-azure-optionalUpgrade kernel-64kbUpgrade ocfs2-kmp-64kbUpgrade kernel-sourceUpgrade kernel-default-develUpgrade dtb-exynosUpgrade kernel-preempt-develUpgrade kernel-azure-livepatch-develUpgrade dtb-allwinnerUpgrade dtb-freescaleUpgrade cluster-md-kmp-azureUpgrade gfs2-kmp-64kbUpgrade dtb-qcomUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-azure-develUpgrade kernel-kvmsmallUpgrade reiserfs-kmp-64kbUpgrade gfs2-kmp-azureUpgrade kernel-default-optionalUpgrade kernel-docs-htmlUpgrade cluster-md-kmp-rtUpgrade kernel-devel-azureUpgrade dtb-caviumUpgrade ocfs2-kmp-azureUpgrade kernel-kvmsmall-vdsoUpgrade gfs2-kmp-rtUpgrade kernel-rtUpgrade dtb-appleUpgrade kernel-azure-extraUpgrade kernel-azureUpgrade kernel-zfcpdumpUpgrade kernel-64kb-livepatch-develUpgrade kernel-syms-azureUpgrade ocfs2-kmp-defaultUpgrade gfs2-kmp-defaultUpgrade kernel-rt_debug-develUpgrade dtb-broadcomUpgrade kernel-rt-vdsoUpgrade kernel-debug-vdsoUpgrade kselftests-kmp-64kbUpgrade dlm-kmp-64kbUpgrade kernel-develUpgrade kernel-source-azureUpgrade dtb-xilinxUpgrade kernel-64kb-optionalUpgrade kselftests-kmp-azureUpgrade dtb-hisiliconUpgrade kernel-rt-livepatchUpgrade kernel-preemptUpgrade dtb-armUpgrade reiserfs-kmp-rtUpgrade kernel-macrosUpgrade kernel-default-livepatch-develUpgrade kselftests-kmp-rtUpgrade kernel-debug-develUpgrade kernel-64kb-extraUpgrade kernel-syms-rtUpgrade kernel-debug-livepatch-develUpgrade dtb-socionextUpgrade kernel-obs-qaUpgrade dtb-amdUpgrade dtb-renesasUpgrade kernel-devel-rtUpgrade dlm-kmp-azureUpgrade dtb-sprdUpgrade dtb-nvidiaUpgrade kernel-default-base-rebuildUpgrade kernel-rt-extraUpgrade dlm-kmp-defaultUpgrade dtb-rockchipUpgrade kernel-rt-develUpgrade cluster-md-kmp-64kbUpgrade kselftests-kmp-defaultUpgrade kernel-rt-livepatch-develUpgrade kernel-symsUpgrade reiserfs-kmp-azureUpgrade dtb-mediatekUpgrade kernel-rt_debug-vdsoUpgrade dtb-amlogicUpgrade kernel-default-extraUpgrade kernel-rt_debugUpgrade dlm-kmp-rtUpgrade kernel-default-baseUpgrade kernel-defaultUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-docsUpgrade cluster-md-kmp-defaultUpgrade kernel-azure-vdsoUpgrade kernel-obs-buildUpgrade kernel-64kb-develUpgrade reiserfs-kmp-defaultUpgrade dtb-apm | Aug 9, 2024 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-azure-fipsUpgrade linux-oracle-5.4Upgrade linux-azureUpgrade linux-raspiUpgrade linux-oracleUpgrade linuxUpgrade linux-fipsUpgrade linux-aws-5.4Upgrade linux-gkeopUpgrade linux-hwe-5.4Upgrade linux-azure-5.4Upgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linux-gcp-5.4Upgrade linux-ibmUpgrade linux-bluefieldUpgrade linux-awsUpgrade linux-gcpUpgrade linux-kvmUpgrade linux-raspi-5.4 | Nov 19, 2024 | May 21, 2024 |
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