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-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debug-coreUpgrade kernel-cross-headersUpgrade kernel-toolsUpgrade kernel-rtUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-kvmUpgrade kernel-rt-modules-extraUpgrade kernel-tools-libs-develUpgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade kernel-rt-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-debug-kvmUpgrade kernel-debug-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-zfcpdump-develUpgrade python3-perfUpgrade kernel-rt-debug-develUpgrade kernel-docUpgrade kernel-zfcpdumpUpgrade perfUpgrade kernel-develUpgrade kernel-modules-extraUpgrade kernelUpgrade kernel-debug-modulesUpgrade kernel-rt-debugUpgrade kernel-tools-libsUpgrade kernel-debugUpgrade kernel-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-develUpgrade kernel-headersUpgrade kernel-modulesUpgrade kernel-rt-core | 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-rtNo solution existsUpgrade kernel | Sep 25, 2024 | May 21, 2024 |
| Rocky_linux | — | Upgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-coreUpgrade kernel-rt-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-coreUpgrade perf-debuginfoUpgrade kernel-rt-debug-modulesUpgrade kernel-modulesUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-develUpgrade kernel-debug-develUpgrade python3-perfUpgrade perfUpgrade kernel-debugUpgrade kernel-rt-debug-kvmUpgrade kernel-modules-extraUpgrade kernel-debug-debuginfoUpgrade kernel-toolsUpgrade kernel-rtUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debugUpgrade kernel-rt-kvmUpgrade kernel-debug-modulesUpgrade kernelUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-develUpgrade kernel-rt-debug-debuginfoUpgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perf-debuginfoUpgrade kernel-rt-debuginfoUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-coreUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-modules-extraUpgrade kernel-rt-modulesUpgrade kernel-develUpgrade kernel-cross-headers | Oct 2, 2024 | May 21, 2024 |
| Suse | — | Upgrade kernel-rt-livepatchUpgrade dtb-caviumUpgrade kernel-source-rtUpgrade kernel-sourceUpgrade kernel-default-livepatchUpgrade kernel-default-develUpgrade dtb-allwinnerUpgrade kernel-azure-extraUpgrade kernel-devel-azureUpgrade kernel-64kbUpgrade ocfs2-kmp-defaultUpgrade kernel-azure-livepatch-develUpgrade ocfs2-kmp-64kbUpgrade gfs2-kmp-rtUpgrade kernel-develUpgrade dtb-broadcomUpgrade dtb-hisiliconUpgrade kernel-64kb-livepatch-develUpgrade kernel-debugUpgrade cluster-md-kmp-azureUpgrade kernel-rt_debug-develUpgrade kernel-source-vanillaUpgrade kernel-kvmsmall-vdsoUpgrade dtb-alteraUpgrade gfs2-kmp-defaultUpgrade kernel-default-vdsoUpgrade kernel-64kb-optionalUpgrade dtb-lgUpgrade dtb-marvellUpgrade dtb-amazonUpgrade kernel-rt-vdsoUpgrade dtb-appleUpgrade ocfs2-kmp-rtUpgrade ocfs2-kmp-azureUpgrade kernel-zfcpdumpUpgrade kernel-kvmsmall-develUpgrade dtb-xilinxUpgrade kernel-azure-optionalUpgrade kernel-rtUpgrade kernel-default-optionalUpgrade kernel-rt-optionalUpgrade dtb-freescaleUpgrade kernel-preempt-develUpgrade kselftests-kmp-azureUpgrade kernel-debug-vdsoUpgrade kernel-preemptUpgrade cluster-md-kmp-rtUpgrade dlm-kmp-64kbUpgrade gfs2-kmp-64kbUpgrade dtb-exynosUpgrade kernel-docs-htmlUpgrade dtb-qcomUpgrade kernel-azureUpgrade kernel-source-azureUpgrade kselftests-kmp-64kbUpgrade reiserfs-kmp-64kbUpgrade kernel-azure-develUpgrade kernel-kvmsmall-livepatch-develUpgrade gfs2-kmp-azureUpgrade kernel-kvmsmallUpgrade kernel-syms-azureUpgrade kselftests-kmp-rtUpgrade dtb-mediatekUpgrade kernel-debug-develUpgrade dtb-sprdUpgrade reiserfs-kmp-rtUpgrade kselftests-kmp-defaultUpgrade dlm-kmp-azureUpgrade kernel-obs-qaUpgrade dlm-kmp-defaultUpgrade kernel-rt-extraUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-apmUpgrade dtb-armUpgrade dtb-amlogicUpgrade cluster-md-kmp-64kbUpgrade reiserfs-kmp-defaultUpgrade kernel-syms-rtUpgrade reiserfs-kmp-azureUpgrade kernel-debug-livepatch-develUpgrade kernel-azure-vdsoUpgrade dtb-socionextUpgrade kernel-default-base-rebuildUpgrade kernel-64kb-develUpgrade cluster-md-kmp-defaultUpgrade kernel-default-baseUpgrade dtb-nvidiaUpgrade kernel-devel-rtUpgrade kernel-macrosUpgrade kernel-rt_debugUpgrade kernel-defaultUpgrade kernel-rt_debug-vdsoUpgrade dtb-amdUpgrade kernel-rt-develUpgrade kernel-default-extraUpgrade kernel-64kb-extraUpgrade kernel-docsUpgrade kernel-obs-buildUpgrade dtb-renesasUpgrade kernel-default-livepatch-develUpgrade kernel-symsUpgrade dtb-rockchipUpgrade dlm-kmp-rtUpgrade kernel-rt-livepatch-devel | Aug 9, 2024 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-oracleUpgrade linux-azureUpgrade linux-oracle-5.4Upgrade linux-gkeopUpgrade linux-raspiUpgrade linux-aws-5.4Upgrade linuxUpgrade linux-fipsUpgrade linux-azure-fipsUpgrade linux-raspi-5.4Upgrade linux-bluefieldUpgrade linux-gcpUpgrade linux-awsUpgrade linux-kvmUpgrade linux-gcp-fipsUpgrade linux-ibmUpgrade linux-gcp-5.4Upgrade linux-aws-fipsUpgrade linux-azure-5.4Upgrade linux-hwe-5.4 | Nov 19, 2024 | May 21, 2024 |
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