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NVD / CVE Program· CNA Linux

CVE-2024-44968: tick/broadcast: Move per CPU pointer access into the atomic section

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.22% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 541a900d245536d4809cb1aa322c3fcc2cdb58a6, 6.1.105, 6.10.5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 541a900d245536d4809cb1aa322c3fcc2cdb58a6, 6.1.105, 6.10.5 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: tick/broadcast: Move per CPU pointer access into the atomic section The recent fix for making the take over of the broadcast timer more reliable retrieves a per CPU pointer in preemptible context. This went unnoticed as compilers hoist the access into the non-preemptible region where the pointer is actually used. But of course it's valid that the compiler keeps it at the place where the code puts it which rightfully triggers: BUG: using smp_processor_id() in preemptible [00000000] code: caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0 Move it to the actual usage site which is in a non-preemptible region.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Sep 4, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 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

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-44968

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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

Affected versions

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

  • linux linux kernel6.1.103 and later · before 6.1.105
  • linux linux kernel6.6.44 and later · before 6.6.46
  • linux linux kernel6.10.3 and later · before 6.10.5
  • linux linux kernel6.11

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

    • dfe19aa91378972f10530635ad83b2d77f481044 and later · before f54abf332a2bc0413cfa8bd6a8511f7aa99faea0affected · git
    • 457a1c87d454455d671a3045cf0b56157be110a1 and later · before f91fb47ecacc178a83a77eeebd25cbaec18c01d6affected · git
    • 9ef7190228145f959d9bc0ddca40ecf76bb413b0 and later · before 668c6c4a7e9e9f081c06b70f30104fb7013437edaffected · git
    • d3b165c10473aa6fc6141bb5b1f6e5b50c1fb774 and later · before 541a900d245536d4809cb1aa322c3fcc2cdb58a6affected · git
    • 408bfb6b0a7f22e971ce6b600aec448769e580a8 and later · before 7b3ec186ba93e333e9efe7254e7e31c1828e5d2daffected · git
    • 3a58c590f6bd1d20eb1e76c5cea31c36cc032339 and later · before b9d604933d5fd72dd37f24e1dc35f778297d745aaffected · git
    • 2cdab4b4bf77369961f706cdeb7d040db10c5217 and later · before 7dd12f85f150010ef7518201c63fa7e395f5c3e9affected · git
    • f7d43dd206e7e18c182f200e67a8db8c209907fa and later · before 6881e75237a84093d0986f56223db3724619f26eaffected · git
    • 6.1.103 and later · before 6.1.105affected · semver
    • 6.6.44 and later · before 6.6.46affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.106-16.1.106-1
Debian:13linuxbefore 6.10.6-16.10.6-1

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-2024-44966Sep 4, 2024 · binfmt_flat: Fix corruption when not offsetting data start
    22Monitor
  • ← EarlierCVE-2024-44967Sep 4, 2024 · drm/mgag200: Bind I2C lifetime to DRM device
    31Monitor
  • Later →CVE-2024-44969Sep 4, 2024 · s390/sclp: Prevent release of buffer in I/O
    22Monitor

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 Linux541a900d245536d4809cb1aa322c3fcc2cdb58a6Vendor (CNA)
Linux Linux6.1.105Vendor (CNA)
Linux Linux6.10.5Vendor (CNA)
Linux Linux6.6.46Vendor (CNA)
Linux Linux668c6c4a7e9e9f081c06b70f30104fb7013437edVendor (CNA)
Linux Linux6881e75237a84093d0986f56223db3724619f26eVendor (CNA)
Linux Linux7b3ec186ba93e333e9efe7254e7e31c1828e5d2dVendor (CNA)
Linux Linux7dd12f85f150010ef7518201c63fa7e395f5c3e9Vendor (CNA)
Linux Linuxb9d604933d5fd72dd37f24e1dc35f778297d745aVendor (CNA)
Linux Linuxf54abf332a2bc0413cfa8bd6a8511f7aa99faea0Vendor (CNA)
Linux Linuxf91fb47ecacc178a83a77eeebd25cbaec18c01d6Vendor (CNA)
debian:linux6.1.106-1 · Debian:12Package 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.

No nightly-computed relations.

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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

References

Show all references (9 more)

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

All records