Signal is active with 3 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Suppress UBSAN warning caused by field misuse The definition of reg->access_width changes depending on the reg->space_id type. Type ACPI_ADR_SPACE_PLATFORM_COMM uses access_width to indicate the PCC region, which can result in a UBSAN if the value is greater than 4. For example: UBSAN: shift-out-of-bounds in drivers/acpi/cppc_acpi.c:1090:9 shift exponent 32 is too large for 32-bit type 'int' CPU: 61 UID: 0 PID: 1220 Comm: (udev-worker) Not tainted 7.0.10-201.fc44.aarch64 #1 PREEMPT(lazy) Hardware name: To be filled by O.E.M. Call trace: ...(trimming) ubsan_epilogue+0x10/0x48 __ubsan_handle_shift_out_of_bounds+0xdc/0x1e0 cpc_write+0x4d0/0x670 cppc_set_perf+0x18c/0x490 cppc_cpufreq_cpu_init+0x1c8/0x380 [cppc_cpufreq] ... (trimming) Lets fix this by validating the region type, as well as whether access_width has a value. Then since we are returning bit_width directly for ACPI_ADR_SPACE_PLATFORM_COMM, drop the code correcting the size.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
CVE-2026-64512 In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Suppress UBSAN warning caused by field misuse The definition of reg->access_width ch… https://www.cve.org/CVERecord?id=CVE-2026-64512
Post summary
This statement announces that CVE‑2026‑64512 has been patched in the Linux kernel, addressing an UBSAN warning caused by a misuse of the reg->access_width field in the ACPI CPPC implementation.
🚨*CVE* CVE-2026-64512 In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Suppress UBSAN warning caused by field misuse The definition of reg->access_width ch… https://www.cve.org/CVERecord?id=CVE-2026-64512 ----- Traducción: CVE-2026-64512 En … http://infoflow.cloud`
Post summary
The Linux kernel ACPI: CPPC component had a UBSAN warning issue (CVE‑2026‑64512) that has been fixed; no PoC, exploit, or active exploitation is mentioned.
CVE-2026-64512 In the Linux kernel, the following vulnerability has been resolved: ACP... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-64512 Vulnerability Notification: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=3
Post summary
The post announces that CVE-2026-64512 has been resolved in the Linux kernel, but it offers no technical details, exploit information, or patch specifics.