SECUFOCUSNOW
Home›CVE index›CVE-2024-49876
Review reviewHigh

CVE-2024-49876

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: drm/xe: fix UAF around queue destruction We currently do stuff like queuing the final destruction step on a random system wq, which will outlive the driver instance. With bad timing we can teardown the driver with one or more work workqueue still being alive leading to various UAF splats. Add a fini step to ensure user queues are properly torn down. At this point GuC should already be nuked so queue itself should no longer be referenced from hw pov. v2 (Matt B) - Looks much safer to use a waitqueue and then just wait for th...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.10.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: drm/xe: fix UAF around queue destruction We currently do stuff like queuing the final destruction step on a random system wq, which will outlive the driver instance. With bad timing we can teardown the driver with one or more work workqueue still being alive leading to various UAF splats. Add a fini step to ensure user queues are properly torn down. At this point GuC should already be nuked so queue itself should no longer be referenced from hw pov. v2 (Matt B) - Looks much safer to use a waitqueue and then just wait for th...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= dd08ebf6c3525a7ea2186e636df064ea47281987 < 272b0e78874586d6ccae04079d75b27b47705544, >= dd08ebf6c3525a7ea2186e636df064ea47281987 < 421c74670b0f9d5c007f1276d3647aa58f407fde, >= dd08ebf6c3525a7ea2186e636df064ea47281987 < 2d2be279f1ca9e7288282d4214f16eea8a727cdb, >= 6.8, >= 6.8 < 6.10.14, >= 6.11 < 6.11.3, 6.12
Fixed versions
6.10.14, 6.11.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2024-49876 — Linux Linux, linux kernel | SECUFOCUS NOW