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Linux KernelOperating system · Linux

CVE-2023-53077

HIGH · 7.8 CVSS v3.1 Published 2025-05-02
Fix available
A fix is available. Upgrade to 5.10.176 / 5.15.104 or later.
See remediation →
80/100
Remediation priority · High
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes [WHY] When PTEBufferSizeInRequests is zero, UBSAN reports the following warning because dml_log2 returns an unexpected negative value: shift exponent 4294966273 is too large for 32-bit type 'int' [HOW] In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and assign the result directly.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-787

The program writes past the bounds of a buffer, overwriting adjacent memory an attacker can turn to their advantage. Crafted input can overwrite control data and redirect execution. Remediation is validating every index and length before a write, plus modern memory-safety mitigations.

General guidance for the out-of-bounds write class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 5.9, < 5.10.176>= 5.11, < 5.15.104>= 5.16, < 6.1.21>= 6.2, < 6.2.8

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 5.10.176 / 5.15.104 / 6.1.21 or later
Fixed in 5.10.1765.15.1046.1.21
Vendor patch git.kernel.org →
Recommended fix High confidence

Upgrade to the next stable release in your branch: 5.10.176, 5.15.104, 6.1.21, or 6.2.8 (depending on your current branch)

  1. 1. Identify the currently running Linux kernel version using 'uname -r'
  2. 2. Determine which version range your current kernel falls into (5.9-5.10.x, 5.11-5.15.x, 5.16-6.1.x, or 6.2.x)
  3. 3. For kernels 5.9-5.10.x: upgrade to kernel version 5.10.176 or later
  4. 4. For kernels 5.11-5.15.x: upgrade to kernel version 5.15.104 or later
  5. 5. For kernels 5.16-6.1.x: upgrade to kernel version 6.1.21 or later
  6. 6. For kernels 6.2.x: upgrade to kernel version 6.2.8 or later
  7. 7. Alternatively, apply the vendor patch commit 031f196d1b1b6d5dfcb0533b431e3ab1750e6189 to the kernel source and rebuild
Caveat Kernel upgrades may require matching firmware, drivers, or system configuration changes; test in staging environment before production deployment

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $3,200. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-53077 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data