CVE-2026-23332— cpufreq: intel_pstate: Fix crash during turbo disable
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I. Basic Information for CVE-2026-23332
Vulnerability Information
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Vulnerability Title
cpufreq: intel_pstate: Fix crash during turbo disable
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cpufreq: intel_pstate: Fix crash during turbo disable When the system is booted with kernel command line argument "nosmt" or "maxcpus" to limit the number of CPUs, disabling turbo via: echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo results in a crash: PF: supervisor read access in kernel mode PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] SMP PTI ... RIP: 0010:store_no_turbo+0x100/0x1f0 ... This occurs because for_each_possible_cpu() returns CPUs even if they are not online. For those CPUs, all_cpu_data[] will be NULL. Since commit 973207ae3d7c ("cpufreq: intel_pstate: Rearrange max frequency updates handling code"), all_cpu_data[] is dereferenced even for CPUs which are not online, causing the NULL pointer dereference. To fix that, pass CPU number to intel_pstate_update_max_freq() and use all_cpu_data[] for those CPUs for which there is a valid cpufreq policy.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在禁用睿频时访问了离线CPU的数据，可能导致空指针取消引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-23332
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Same Patch Batch · Linux · 2026-03-25 · 116 CVEs total
| CVE-2026-23395 | 8.8 HIGH | Bluetooth: L2CAP: Fix accepting multiple L2CAP_ECRED_CONN_REQ |
| CVE-2026-31788 | 8.2 HIGH | xen/privcmd: restrict usage in unprivileged domU |
| CVE-2026-23280 | 7.8 HIGH | accel/amdxdna: Prevent ubuf size overflow |
| CVE-2026-23317 | 7.8 HIGH | drm/vmwgfx: Return the correct value in vmw_translate_ptr functions |
| CVE-2026-23393 | 7.8 HIGH | bridge: cfm: Fix race condition in peer_mep deletion |
| CVE-2026-23392 | 7.8 HIGH | netfilter: nf_tables: release flowtable after rcu grace period on error |
| CVE-2026-23391 | 7.8 HIGH | netfilter: xt_CT: drop pending enqueued packets on template removal |
| CVE-2026-23340 | 7.8 HIGH | net: sched: avoid qdisc_reset_all_tx_gt() vs dequeue race for lockless qdiscs |
| CVE-2026-23306 | 7.8 HIGH | scsi: pm8001: Fix use-after-free in pm8001_queue_command() |
| CVE-2026-23372 | 7.8 HIGH | nfc: rawsock: cancel tx_work before socket teardown |
| CVE-2026-23288 | 7.8 HIGH | accel/amdxdna: Fix out-of-bounds memset in command slot handling |
| CVE-2026-23378 | 7.8 HIGH | net/sched: act_ife: Fix metalist update behavior |
| CVE-2026-23336 | 7.8 HIGH | wifi: cfg80211: cancel rfkill_block work in wiphy_unregister() |
| CVE-2026-23351 | 7.8 HIGH | netfilter: nft_set_pipapo: split gc into unlink and reclaim phase |
| CVE-2026-23383 | 7.8 HIGH | bpf, arm64: Force 8-byte alignment for JIT buffer to prevent atomic tearing |
| CVE-2026-23350 | 7.8 HIGH | drm/xe/queue: Call fini on exec queue creation fail |
| CVE-2026-23364 | 7.4 HIGH | ksmbd: Compare MACs in constant time |
| CVE-2026-23294 | 7.0 HIGH | bpf: Fix race in devmap on PREEMPT_RT |
| CVE-2026-23358 | drm/amdgpu: Fix error handling in slot reset | |
| CVE-2026-23357 | can: mcp251x: fix deadlock in error path of mcp251x_open |
Showing top 20 of 116 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2026-23332
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