CVE-2024-46815

Memory corruption via negative watermark-set array index

Published Sep 27, 2024 · Updated Aug 5, 2026

Out-of-bounds access in the AMD display driver in Linux allows local users to trigger a kernel-memory overrun through display state handling. The watermark calculation indexes reader_wm_sets[num_valid_sets - 1] without first rejecting a zero num_valid_sets value, producing a negative array index. Reachability requires the AMD display path and a state with no valid watermark set; public sources document no specific crash or code-execution outcome.

CVSS severity7.1
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the AMD display driver in Linux allows local users to trigger a kernel-memory overrun through display state handling. The watermark calculation indexes reader_wm_sets[num_valid_sets - 1] without first rejecting a zero num_valid_sets value, producing a negative array index. Reachability requires the AMD display path and a state with no valid watermark set; public sources document no specific crash or code-execution outcome.

The record

CVE
CVE-2024-46815
Published
Sep 27, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 27, 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=4.15
  2. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <21f9cb44f8c60bf6c26487d428b1a09ad3e8aebf
  3. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <6a4a08e45e614cfa7a56498cdfaeb7fae2f07fa0
  4. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <7c47dd2e92341f2989ab73dbed07f8894593ad7b
  5. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <a72d4996409569027b4609414a14a87679b12267
  6. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <b36e9b3104c4ba0f2f5dd083dcf6159cb316c996
  7. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <b38a4815f79b87efb196cd5121579fc51e29a7fb
  8. Affected versionversion=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <c4a7f7c0062fe2c73f70bb7e335199e25bd71492

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.15; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <21f9cb44f8c60bf6c26487d428b1a09ad3e8aebf; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <6a4a08e45e614cfa7a56498cdfaeb7fae2f07fa0; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <7c47dd2e92341f2989ab73dbed07f8894593ad7b; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <a72d4996409569027b4609414a14a87679b12267; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <b36e9b3104c4ba0f2f5dd083dcf6159cb316c996; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <b38a4815f79b87efb196cd5121579fc51e29a7fb; version=4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c <c4a7f7c0062fe2c73f70bb7e335199e25bd71492

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.1LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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.

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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

No sourced classifications are available.

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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