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NVD / CVE Program· CNA Linux

CVE-2024-43890: tracing: Fix overflow in get_free_elt()

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: 0.25% (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 236bb4690773ab6869b40bedc7bc8d889e36f9d6, 302ceb625d7b990db205a15e371f9a71238de91c, 788ea62499b3c18541fd6d621964d8fafbc4aec5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 236bb4690773ab6869b40bedc7bc8d889e36f9d6, 302ceb625d7b990db205a15e371f9a71238de91c, 788ea62499b3c18541fd6d621964d8fafbc4aec5 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: tracing: Fix overflow in get_free_elt() "tracing_map->next_elt" in get_free_elt() is at risk of overflowing. Once it overflows, new elements can still be inserted into the tracing_map even though the maximum number of elements (`max_elts`) has been reached. Continuing to insert elements after the overflow could result in the tracing_map containing "tracing_map->max_size" elements, leaving no empty entries. If any attempt is made to insert an element into a full tracing_map using `__tracing_map_insert()`, it will cause an infinite loop with preemption disabled, leading to a CPU hang problem. Fix this by preventing any further increments to "tracing_map->next_elt" once it reaches "tracing_map->max_elt".

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Aug 26, 2024
Updated
Oct 15, 2026
EPSS
0.2% · 17th percentile

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.

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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 kernel4.7 and later · before 4.19.320
  • linux linux kernel4.20 and later · before 5.4.282
  • linux linux kernel5.5 and later · before 5.10.224
  • linux linux kernel5.11 and later · before 5.15.165
  • linux linux kernel5.16 and later · before 6.1.105
  • linux linux kernel6.2 and later · before 6.6.46
  • linux linux kernel6.7 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

    • 4.7affected
    • 08d43a5fa063e03c860f2f391a30c388bcbc948e and later · before 302ceb625d7b990db205a15e371f9a71238de91caffected · git
    • 08d43a5fa063e03c860f2f391a30c388bcbc948e and later · before d3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18affected · git
    • 08d43a5fa063e03c860f2f391a30c388bcbc948e and later · before eb223bf01e688dfe37e813c8988ee11c8c9f8d0aaffected · git
    • 08d43a5fa063e03c860f2f391a30c388bcbc948e and later · before cd10d186a5409a1fe6e976df82858e9773a698daaffected · git
    • 08d43a5fa063e03c860f2f391a30c388bcbc948e and later · before 788ea62499b3c18541fd6d621964d8fafbc4aec5affected · git
    • 08d43a5fa063e03c860f2f391a30c388bcbc948e and later · before a172c7b22bc2feaf489cfc6d6865f7237134fdf8affected · git
    • 08d43a5fa063e03c860f2f391a30c388bcbc948e and later · before 236bb4690773ab6869b40bedc7bc8d889e36f9d6affected · git
    • 08d43a5fa063e03c860f2f391a30c388bcbc948e and later · before bcf86c01ca4676316557dd482c8416ece8c2e143affected · git
    • before 4.7not affected · 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
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6kernel-cocobefore 6.4.0-15061.6.coco15sp6.16.4.0-15061.6.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6kernel-coco_debugbefore 6.4.0-15061.6.coco15sp6.16.4.0-15061.6.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6kernel-source-cocobefore 6.4.0-15061.6.coco15sp6.16.4.0-15061.6.coco15sp6.1
SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6kernel-syms-cocobefore 6.4.0-15061.6.coco15sp6.16.4.0-15061.6.coco15sp6.1

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-2024-43888Aug 26, 2024 · mm: list_lru: fix UAF for memory cgroup
    31Monitor
  • ← EarlierCVE-2024-43889Aug 26, 2024 · padata: Fix possible divide-by-0 panic in padata_mt_helper()
    22Monitor
  • Later →CVE-2024-43893Aug 26, 2024 · serial: core: check uartclk for zero to avoid divide by zero
    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 Linux236bb4690773ab6869b40bedc7bc8d889e36f9d6Vendor (CNA)
Linux Linux302ceb625d7b990db205a15e371f9a71238de91cVendor (CNA)
Linux Linux788ea62499b3c18541fd6d621964d8fafbc4aec5Vendor (CNA)
Linux Linuxa172c7b22bc2feaf489cfc6d6865f7237134fdf8Vendor (CNA)
Linux Linuxbcf86c01ca4676316557dd482c8416ece8c2e143Vendor (CNA)
Linux Linuxcd10d186a5409a1fe6e976df82858e9773a698daVendor (CNA)
Linux Linuxd3e4dbc2858fe85d1dbd2e72a9fc5dea988b5c18Vendor (CNA)
Linux Linuxeb223bf01e688dfe37e813c8988ee11c8c9f8d0aVendor (CNA)
debian:linux6.1.106-1 · Debian:12Package registry (OSV)
suse:kernel-coco6.4.0-15061.6.coco15sp6.1 · SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6Package registry (OSV)
suse:kernel-coco_debug6.4.0-15061.6.coco15sp6.1 · SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6Package registry (OSV)
suse:kernel-source-coco6.4.0-15061.6.coco15sp6.1 · SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6Package registry (OSV)
suse:kernel-syms-coco6.4.0-15061.6.coco15sp6.1 · SUSE:Linux Enterprise Module for Confidential Computing Technical Preview 15 SP6Package 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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-2023-0179518 days apartA buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel.
    32Monitor
  • CVE-2024-4213627 days apartcdrom: rearrange last_media_change check to avoid unintentional overflow
    31Monitor
  • CVE-2022-4883741 days apartusb: gadget: rndis: prevent integer overflow in rndis_set_response()
    31Monitor
  • CVE-2024-4099445 days apartptp: fix integer overflow in max_vclocks_store
    31Monitor
  • CVE-2024-4100045 days apartblock/ioctl: prefer different overflow check
    31Monitor
  • CVE-2022-4903056 days apartlibbpf: Handle size overflow for ringbuf mmap
    31Monitor

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)

CWE-190 · Integer Overflow or Wraparound

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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

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

References

Show all references (12 more)

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

All records