CVE-2024-43849

Local locator-state corruption via concurrent unlocked writes

Published Aug 17, 2024 · Updated May 11, 2026

Improper locking in the Qualcomm PDR interface in affected Linux kernels beginning with 5.7 allows local users to corrupt locator state. PDR updates the node and port fields of locator_addr without holding the main pdr->lock, permitting concurrent rewrites. Exploitation requires local low-privileged access and a sufficiently fast service-locator restart; the published evidence establishes integrity loss only.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in the Qualcomm PDR interface in affected Linux kernels beginning with 5.7 allows local users to corrupt locator state. PDR updates the node and port fields of locator_addr without holding the main pdr->lock, permitting concurrent rewrites. Exploitation requires local low-privileged access and a sufficiently fast service-locator restart; the published evidence establishes integrity loss only.

The record

CVE
CVE-2024-43849
Published
Aug 17, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.7
  2. Affected versionversion=fbe639b44a82755d639df1c5d147c93f02ac5a0f <107924c14e3ddd85119ca43c26a4ee1056fa9b84
  3. Affected versionversion=fbe639b44a82755d639df1c5d147c93f02ac5a0f <3e815626d73e05152a8142f6e44aecc4133e6e08
  4. Affected versionversion=fbe639b44a82755d639df1c5d147c93f02ac5a0f <475a77fb3f0e1d527f56c60b79f5879661df5b80
  5. Affected versionversion=fbe639b44a82755d639df1c5d147c93f02ac5a0f <8543269567e2fb3d976a8255c5e348aed14f98bc
  6. Affected versionversion=fbe639b44a82755d639df1c5d147c93f02ac5a0f <d0870c4847e77a49c2f91bb2a8e0fa3c1f8dea5c
  7. Affected versionversion=fbe639b44a82755d639df1c5d147c93f02ac5a0f <eab05737ee22216250fe20d27f5a596da5ea6eb7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=fbe639b44a82755d639df1c5d147c93f02ac5a0f <107924c14e3ddd85119ca43c26a4ee1056fa9b84; version=fbe639b44a82755d639df1c5d147c93f02ac5a0f <3e815626d73e05152a8142f6e44aecc4133e6e08; version=fbe639b44a82755d639df1c5d147c93f02ac5a0f <475a77fb3f0e1d527f56c60b79f5879661df5b80; version=fbe639b44a82755d639df1c5d147c93f02ac5a0f <8543269567e2fb3d976a8255c5e348aed14f98bc; version=fbe639b44a82755d639df1c5d147c93f02ac5a0f <d0870c4847e77a49c2f91bb2a8e0fa3c1f8dea5c; version=fbe639b44a82755d639df1c5d147c93f02ac5a0f <eab05737ee22216250fe20d27f5a596da5ea6eb7

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-667Improper Locking

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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