CVE-2024-49981

Kernel memory corruption via Venus teardown race

Published Oct 21, 2024 · Updated Aug 5, 2026

Use-after-free in the Linux kernel's Qualcomm Venus driver allows local users to corrupt kernel memory during device removal. A pending venus_sys_error_handler work item can enter hfi_reinit after venus_remove frees hdev because teardown does not cancel the work. Triggering the race requires local low-privileged access and a Qualcomm Venus device; successful memory corruption can compromise kernel confidentiality, integrity, and availability.

CVSS severity7.0
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel's Qualcomm Venus driver allows local users to corrupt kernel memory during device removal. A pending venus_sys_error_handler work item can enter hfi_reinit after venus_remove frees hdev because teardown does not cancel the work. Triggering the race requires local low-privileged access and a Qualcomm Venus device; successful memory corruption can compromise kernel confidentiality, integrity, and availability.

The record

CVE
CVE-2024-49981
Published
Oct 21, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, CWE-362
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=4.13
  2. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <10941d4f99a5a34999121b314afcd9c0a1c14f15
  3. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <2a541fcc0bd2b05a458e9613376df1289ec11621
  4. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <5098b9e6377577fe13d03e1d8914930f014a3314
  5. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <60b6968341a6dd5353554f3e72db554693a128a5
  6. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <63bbe26471ebdcc3c20bb4cc3950d666279ad658
  7. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <b0686aedc5f1343442d044bd64eeac7e7a391f4e
  8. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <bf6be32e2d39f6301ff1831e249d32a8744ab28a
  9. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <c5a85ed88e043474161bbfe54002c89c1cb50ee2
  10. Affected versionversion=af2c3834c8ca7cc65d15592ac671933df8848115 <d925e9f7fb5a2dbefd1a73fc01061f38c7becd4c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.13; version=af2c3834c8ca7cc65d15592ac671933df8848115 <10941d4f99a5a34999121b314afcd9c0a1c14f15; version=af2c3834c8ca7cc65d15592ac671933df8848115 <2a541fcc0bd2b05a458e9613376df1289ec11621; version=af2c3834c8ca7cc65d15592ac671933df8848115 <5098b9e6377577fe13d03e1d8914930f014a3314; version=af2c3834c8ca7cc65d15592ac671933df8848115 <60b6968341a6dd5353554f3e72db554693a128a5; version=af2c3834c8ca7cc65d15592ac671933df8848115 <63bbe26471ebdcc3c20bb4cc3950d666279ad658; version=af2c3834c8ca7cc65d15592ac671933df8848115 <b0686aedc5f1343442d044bd64eeac7e7a391f4e; version=af2c3834c8ca7cc65d15592ac671933df8848115 <bf6be32e2d39f6301ff1831e249d32a8744ab28a; version=af2c3834c8ca7cc65d15592ac671933df8848115 <c5a85ed88e043474161bbfe54002c89c1cb50ee2; version=af2c3834c8ca7cc65d15592ac671933df8848115 <d925e9f7fb5a2dbefd1a73fc01061f38c7becd4c

Published CVSS scores

7.0CanonicalCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-416Use After Free
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization

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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