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NVD / CVE Program· CNA Linux

CVE-2024-26894: ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()

Noroxi assessment

Priority: Monitor (action score 24/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
  • Someone with local access to the system can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 1cbaf4c793b0808532f4e7b40bc4be7cec2c78f2, 3d48e5be107429ff5d824e7f2a00d1b610d36fbc, 8d14a4d0afb49a5b8535d414c782bb334860e73e.

Low priority for now. Upgrade to Linux Linux 1cbaf4c793b0808532f4e7b40bc4be7cec2c78f2, 3d48e5be107429ff5d824e7f2a00d1b610d36fbc, 8d14a4d0afb49a5b8535d414c782bb334860e73e or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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): [<ffffffff993495ed>] kmalloc_trace+0x29d/0x340 [<ffffffff9972f3b3>] acpi_processor_power_init+0xf3/0x1c0 [<ffffffff9972d263>] __acpi_processor_start+0xd3/0xf0 [<ffffffff9972d2bc>] acpi_processor_start+0x2c/0x50 [<ffffffff99805872>] really_probe+0xe2/0x480 [<ffffffff99805c98>] __driver_probe_device+0x78/0x160 [<ffffffff99805daf>] driver_probe_device+0x1f/0x90 [<ffffffff9980601e>] __driver_attach+0xce/0x1c0 [<ffffffff99803170>] bus_for_each_dev+0x70/0xc0 [<ffffffff99804822>] bus_add_driver+0x112/0x210 [<ffffffff99807245>] driver_register+0x55/0x100 [<ffffffff9aee4acb>] acpi_processor_driver_init+0x3b/0xc0 [<ffffffff990012d1>] do_one_initcall+0x41/0x300 [<ffffffff9ae7c4b0>] kernel_init_freeable+0x320/0x470 [<ffffffff99b231f6>] kernel_init+0x16/0x1b0 [<ffffffff99042e6d>] ret_from_fork+0x2d/0x50 Fix this by freeing the CPU idle device after unregistering it.

MediumCVSS 6.0 · v3.1—No exploit Fix available
Published
Apr 17, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 17th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • linux linux kernel4.20 and later · before 5.4.273
  • linux linux kernel5.5 and later · before 5.10.214
  • linux linux kernel5.11 and later · before 5.15.153
  • linux linux kernel3.7 and later · before 4.19.311
  • linux linux kernel6.2 and later · before 6.6.23
  • linux linux kernel6.7 and later · before 6.7.11
  • linux linux kernel6.8 and later · before 6.8.2
  • linux linux kernel5.16 and later · before 6.1.83

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.7affected
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before d351bcadab6caa6d8ce7159ff4b77e2da35c09faaffected · git
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before ea96bf3f80625cddba1391a87613356b1b45716daffected · git
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before c2a30c81bf3cb9033fa9f5305baf7c377075e2e5affected · git
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before 1cbaf4c793b0808532f4e7b40bc4be7cec2c78f2affected · git
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before fad9bcd4d754cc689c19dc04d2c44b82c1a5d6c8affected · git
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before 3d48e5be107429ff5d824e7f2a00d1b610d36fbcaffected · git
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before 8d14a4d0afb49a5b8535d414c782bb334860e73eaffected · git
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before cd5c2d0b09d5b6d3f0a7bbabe6761a4997e9dee9affected · git
    • 3d339dcbb56d8d70c1b959aff87d74adc3a84eea and later · before e18afcb7b2a12b635ac10081f943fcf84ddacc51affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.85-16.1.85-1
Debian:13linuxbefore 6.7.12-16.7.12-1
Red Hat:rhel_eus:9.4::appstreambpftool-debuginfobefore 0:7.3.0-427.57.1.el9_40:7.3.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-debuginfobefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-develbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debug-devel-matchedbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-debuginfobefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-develbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-64k-devel-matchedbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-debuginfobefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-develbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debug-devel-matchedbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfobefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-aarch64before 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-ppc64lebefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-s390xbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-debuginfo-common-x86_64before 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-develbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-devel-matchedbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-docbefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-rt-debug-debuginfobefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-rt-debuginfobefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-tools-debuginfobefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4
Red Hat:rhel_eus:9.4::appstreamkernel-zfcpdump-debuginfobefore 0:5.14.0-427.57.1.el9_40:5.14.0-427.57.1.el9_4

+56

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-26889Apr 17, 2024 · Bluetooth: hci_core: Fix possible buffer overflow
    22Monitor
  • ← EarlierCVE-2024-26891Apr 17, 2024 · iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected
    22Monitor
  • Later →CVE-2024-26895Apr 17, 2024 · wifi: wilc1000: prevent use-after-free on vif when cleaning up all interfaces
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux1cbaf4c793b0808532f4e7b40bc4be7cec2c78f2Vendor (CNA)
Linux Linux3d48e5be107429ff5d824e7f2a00d1b610d36fbcVendor (CNA)
Linux Linux8d14a4d0afb49a5b8535d414c782bb334860e73eVendor (CNA)
Linux Linuxc2a30c81bf3cb9033fa9f5305baf7c377075e2e5Vendor (CNA)
Linux Linuxcd5c2d0b09d5b6d3f0a7bbabe6761a4997e9dee9Vendor (CNA)
Linux Linuxd351bcadab6caa6d8ce7159ff4b77e2da35c09faVendor (CNA)
Linux Linuxe18afcb7b2a12b635ac10081f943fcf84ddacc51Vendor (CNA)
Linux Linuxea96bf3f80625cddba1391a87613356b1b45716dVendor (CNA)
Linux Linuxfad9bcd4d754cc689c19dc04d2c44b82c1a5d6c8Vendor (CNA)
debian:linux6.1.85-1 · Debian:12Package registry (OSV)
red hat:bpftool-debuginfo0:7.3.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-427.57.1.el9_4 · Red Hat:rhel_eus:9.4::appstreamPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2021-4713723 days apartnet: lantiq: fix memory corruption in RX ring
    39Monitor
  • CVE-2024-3596933 days apartipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr
    35Monitor
  • CVE-2021-4755137 days apartdrm/amd/amdkfd: Fix kernel panic when reset failed and been triggered again
    31Monitor
  • CVE-2024-3402768 days apartf2fs: compress: fix to cover {reserve,release}_compress_blocks() w/ cp_rwsem lock
    31Monitor
  • CVE-2021-4713033 days apartnvmet: fix freeing unallocated p2pmem
    30Monitor
  • CVE-2023-5252946 days apartHID: sony: Fix a potential memory leak in sony_probe()
    24Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-770 · Allocation of Resources Without Limits or Throttling

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (11 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records