Log in Start free

Vulnerability · Published Nov 9, 2024 · Assigned by Linux

CVE-2024-50249ACPI: CPPC: Make rmw_lock a raw_spin_lock

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 87.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Make rmw_lock a raw_spin_lock The following BUG was triggered: ============================= [ BUG: Invalid wait context ] 6.12.0-rc2-XXX #406 Not tainted ----------------------------- kworker/1:1/62 is trying to lock: ffffff8801593030 (&cpc_ptr->rmw_lock){+.+.}-{3:3}, at: cpc_write+0xcc/0x370 other info that might help us debug this: context-{5:5} 2 locks held by kworker/1:1/62: #0: ffffff897ef5ec98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x50 #1: ffffff880154e238 (&sg_policy->update_lock){....}-{2:2}, at: sugov_update_shared+0x3c/0x280 stack backtrace: CPU: 1 UID: 0 PID: 62 Comm: kworker/1:1 Not tainted 6.12.0-rc2-g9654bd3e8806 #406 Workqueue: 0x0 (events) Call trace: dump_backtrace+0xa4/0x130 show_stack+0x20/0x38 dump_stack_lvl+0x90/0xd0 dump_stack+0x18/0x28 __lock_acquire+0x480/0x1ad8 lock_acquire+0x114/0x310 _raw_spin_lock+0x50/0x70 cpc_write+0xcc/0x370 cppc_set_perf+0xa0/0x3a8 cppc_cpufreq_fast_switch+0x40/0xc0 cpufreq_driver_fast_switch+0x4c/0x218 sugov_update_shared+0x234/0x280 update_load_avg+0x6ec/0x7b8 dequeue_entities+0x108/0x830 dequeue_task_fair+0x58/0x408 __schedule+0x4f0/0x1070 schedule+0x54/0x130 worker_thread+0xc0/0x2e8 kthread+0x130/0x148 ret_from_fork+0x10/0x20 sugov_update_shared() locks a raw_spinlock while cpc_write() locks a spinlock. To have a correct wait-type order, update rmw_lock to a raw spinlock and ensure that interrupts will be disabled on the CPU holding it. [ rjw: Changelog edits ]

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.119-1DEBIAN-CVE-2024-50249
Debian:12linux6.1.119-1DSA-5818-1
Debian:13linux6.11.7-1DEBIAN-CVE-2024-50249
Debian:14linux6.11.7-1DEBIAN-CVE-2024-50249
Ubuntu:22.04:LTSlinux5.15.0-133.144UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux6.8.0-58.60UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-aws5.15.0-1078.85UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-aws6.8.0-1027.29UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1027.29~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-azure5.15.0-1081.90UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-azure6.8.0-1027.32UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1027.32~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1081.90.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-gcp5.15.0-1077.86UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-gcp6.8.0-1028.30UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1028.30~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-gke5.15.0-1075.81UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-gke6.8.0-1023.27UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1060.68UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1010.12UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-58.60~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-ibm5.15.0-1070.73UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-ibm6.8.0-1024.24UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1024.24~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1073.79UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-kvm5.15.0-1076.81UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-133.143UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-58.60.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-58.60.1~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1072.73UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1026.29UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1026.29~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1026.29.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1033.33UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1008.8UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1021.21UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1026.26UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-oracle5.15.0-1075.81UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-oracle6.8.0-1024.25UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1024.25~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-raspi5.15.0-1072.75UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-raspi6.8.0-1028.32UBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-50249
Ubuntu:24.04:LTSlinux-riscv6.8.0-58.60.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-58.60.1~22.04.1UBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-50249
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1044.48UBUNTU-CVE-2024-50249

Affected products (as reported)

VendorProductVersions
Linux Linux 94e8c988468dafde1d2bfe0532a60a3117f6394b – before c46d6b02588000c27b7b869388c2c0278bd0d173f812ca13a0d3e3aa418da36b66ca40df0d6f9e60 – before 23039b4aaf1e82e0feea1060834d4ec34262e4538ad28208be7bbe748e90442c45963ddbef0fd1e2 – before 0eb2b767c42fac61ab23c4063eb456baa4c2c26220cde05aa8bcd7a5ff36a609d813189b7cdbe692 – before 43b1df48d1e7000a214acd1a81b8012ca8a929c860949b7b805424f21326b450ca4f1806c06d982e – before 1c10941e34c5fdc0357e46a25bd130d9cf40b92582cee12ada68dfd438c7faca152dbfe0428687436.10.13 – before 6.11
Linux Linux 5.15.168 – before 5.15.1716.1.113 – before 6.1.1166.6.54 – before 6.6.606.11.2 – before 6.11.7

References