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-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-modules-extraUpgrade kernel-debug-modulesUpgrade kernel-docUpgrade kernel-rt-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-debug-kvmUpgrade kernel-rt-debug-develUpgrade kernel-debug-develUpgrade perfUpgrade kernel-debug-coreUpgrade kernel-modulesUpgrade kernel-develUpgrade kernel-tools-libsUpgrade kernel-headersUpgrade python3-perfUpgrade kernel-zfcpdumpUpgrade kernel-rt-coreUpgrade kernelUpgrade kernel-rt-debug-modulesUpgrade kernel-debugUpgrade kernel-coreUpgrade kernel-rt-debugUpgrade kernel-rt-modules-extraUpgrade kernel-tools-libs-develUpgrade kernel-abi-stablelistsUpgrade kernel-rt-modulesUpgrade kernel-cross-headersUpgrade bpftoolUpgrade kernel-zfcpdump-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-toolsUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-debug-coreUpgrade kernel-rt-kvmUpgrade kernel-rt | 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 | — | No solution existsUpgrade kernelUpgrade kernel-rt | Sep 25, 2024 | May 21, 2024 |
| Rocky_linux | — | Upgrade kernel-rt-debug-coreUpgrade kernel-debug-modules-extraUpgrade kernel-tools-libsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-cross-headersUpgrade kernel-rt-debugUpgrade kernel-rt-develUpgrade kernel-toolsUpgrade bpftoolUpgrade kernelUpgrade kernel-rt-modulesUpgrade python3-perf-debuginfoUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-kvmUpgrade kernel-develUpgrade kernel-rtUpgrade kernel-tools-libs-develUpgrade kernel-rt-debuginfoUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-modulesUpgrade kernel-debug-debuginfoUpgrade kernel-debuginfoUpgrade kernel-coreUpgrade kernel-rt-debug-kvmUpgrade kernel-debugUpgrade kernel-rt-debug-modulesUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-debug-develUpgrade kernel-modules-extraUpgrade python3-perfUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-coreUpgrade perfUpgrade kernel-debug-coreUpgrade perf-debuginfo | Oct 2, 2024 | May 21, 2024 |
| Suse | — | Upgrade kernel-symsUpgrade dtb-rockchipUpgrade dtb-mediatekUpgrade reiserfs-kmp-defaultUpgrade kernel-defaultUpgrade dtb-amlogicUpgrade dtb-sprdUpgrade reiserfs-kmp-azureUpgrade kernel-default-livepatch-develUpgrade kernel-obs-buildUpgrade kernel-64kb-extraUpgrade kernel-rt_debugUpgrade kernel-rt_debug-vdsoUpgrade kernel-obs-qaUpgrade kernel-64kb-develUpgrade reiserfs-kmp-rtUpgrade kernel-rt-livepatch-develUpgrade kernel-debug-livepatch-develUpgrade kernel-azure-vdsoUpgrade cluster-md-kmp-defaultUpgrade kernel-default-baseUpgrade kernel-default-base-rebuildUpgrade dtb-amdUpgrade kernel-debug-develUpgrade dtb-socionextUpgrade cluster-md-kmp-64kbUpgrade dtb-nvidiaUpgrade kernel-rt-extraUpgrade kernel-macrosUpgrade kernel-syms-rtUpgrade dlm-kmp-defaultUpgrade kernel-rt-develUpgrade kselftests-kmp-rtUpgrade dtb-apmUpgrade dtb-armUpgrade kernel-docsUpgrade kernel-rt_debug-livepatch-develUpgrade dlm-kmp-azureUpgrade dtb-renesasUpgrade kernel-devel-rtUpgrade kselftests-kmp-defaultUpgrade dlm-kmp-rtUpgrade kernel-default-extraUpgrade kernel-preempt-develUpgrade kernel-default-develUpgrade kernel-source-rtUpgrade kernel-rt-optionalUpgrade kernel-devel-azureUpgrade dlm-kmp-64kbUpgrade kernel-azure-develUpgrade kernel-azure-extraUpgrade dtb-amazonUpgrade gfs2-kmp-64kbUpgrade ocfs2-kmp-64kbUpgrade kernel-docs-htmlUpgrade dtb-appleUpgrade kselftests-kmp-64kbUpgrade ocfs2-kmp-rtUpgrade kernel-azureUpgrade kernel-rtUpgrade dtb-marvellUpgrade kernel-rt-livepatchUpgrade kernel-default-vdsoUpgrade dtb-alteraUpgrade cluster-md-kmp-rtUpgrade kernel-sourceUpgrade kernel-preemptUpgrade dtb-freescaleUpgrade kernel-source-vanillaUpgrade dtb-qcomUpgrade kernel-default-livepatchUpgrade kernel-rt_debug-develUpgrade kernel-develUpgrade kselftests-kmp-azureUpgrade kernel-syms-azureUpgrade dtb-hisiliconUpgrade ocfs2-kmp-azureUpgrade kernel-rt-vdsoUpgrade dtb-xilinxUpgrade kernel-kvmsmall-vdsoUpgrade cluster-md-kmp-azureUpgrade kernel-zfcpdumpUpgrade kernel-kvmsmall-develUpgrade kernel-default-optionalUpgrade kernel-64kbUpgrade kernel-64kb-livepatch-develUpgrade kernel-debugUpgrade reiserfs-kmp-64kbUpgrade kernel-64kb-optionalUpgrade dtb-allwinnerUpgrade gfs2-kmp-defaultUpgrade kernel-debug-vdsoUpgrade kernel-azure-optionalUpgrade dtb-lgUpgrade dtb-broadcomUpgrade dtb-exynosUpgrade kernel-kvmsmallUpgrade kernel-azure-livepatch-develUpgrade kernel-source-azureUpgrade kernel-kvmsmall-livepatch-develUpgrade gfs2-kmp-rtUpgrade ocfs2-kmp-defaultUpgrade dtb-caviumUpgrade gfs2-kmp-azure | Aug 9, 2024 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-raspi-5.4Upgrade linux-gcpUpgrade linux-bluefieldUpgrade linux-awsUpgrade linux-hwe-5.4Upgrade linux-azure-5.4Upgrade linux-kvmUpgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linux-ibmUpgrade linux-gcp-5.4Upgrade linuxUpgrade linux-fipsUpgrade linux-gkeopUpgrade linux-oracle-5.4Upgrade linux-aws-5.4Upgrade linux-raspiUpgrade linux-azure-fipsUpgrade linux-oracleUpgrade linux-azure | Nov 19, 2024 | May 21, 2024 |
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