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Vulnerabilities

Vulnerability · CVE-2024-26894

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() After unregistering the CPU id…

Published Apr 17, 2024 · catalog updated Oct 15, 2026 · linux kernel

Check if you run it

No confirmed exploitation is on record for CVE-2024-26894. EPSS is 0.25%. Act only if a listed version of linux kernel is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe linux/linux kernel

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() After unregistering the CPU idle device, the memory associated with it is not freed, leading to a memory leak: unreferenced object 0xffff896282f6c000 (size 1024): comm "swapper/0", pid 1, jiffies 4294893170 hex dump (first 32 bytes): 00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 8836a742): [ ] kmalloc_trace+0x29d/0x340 [ ] acpi_processor_power_init+0xf3/0x1c0 [ ] __acpi_processor_start+0xd3/0xf0 [ ] acpi_processor_start+0x2c/0x50 [ ] really_probe+0xe2/0x480 [ ] __driver_probe_device+0x78/0x160 [ ] driver_probe_device+0x1f/0x90 [ ] __driver_attach+0xce/0x1c0 [ ] bus_for_each_dev+0x70/0xc0 [ ] bus_add_driver+0x112/0x210 [ ] driver_register+0x55/0x100 [ ] acpi_processor_driver_init+0x3b/0xc0 [ ] do_one_initcall+0x41/0x300 [ ] kernel_init_freeable+0x320/0x470 [ ] kernel_init+0x16/0x1b0 [ ] ret_from_fork+0x2d/0x50 Fix this by freeing the CPU idle device after unregistering it.

Are you affected?

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  • cpe debian/debian linux10.0
  • cpe linux/linux kernelversion unspecified

How to fix CVE-2024-26894

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2024-26894. EPSS is 0.25%. Act only if a listed version of linux kernel is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 17, 2024 · NIST NVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() After unregistering the CPU idle device, the memory associated with it is not freed, leading to a memory leak: unreferenced object 0xffff896282f6c000 (size 1024): comm "swapper/0", pid 1, jiffies 4294893170 hex dump (first 32 bytes): 00 00 00 00 0b 00 00 00 00 00

  2. Oct 15, 2026 · NIST NVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() After unregistering the CPU idle device, the memory associated with it is not freed, leading to a memory leak: unreferenced object 0xffff896282f6c000 (size 1024): comm "swapper/0", pid 1, jiffies 4294893170 hex dump (first 32 bytes): 00 00 00 00 0b 00 00 00 00 00

Sources

  • CVE.orgVulnerability recordCVE-2024-26894

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2024-26894

    30-day exploitation probability 0.25%

    first.org
  • NIST NVDVulnerability recordCVE-2024-26894

    In the Linux kernel, the following vulnerability has been resolved: ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() After unregistering the CPU idle device, the memory associated with it is not freed, leading to a memory leak: unreferenced object 0xffff896

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.