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NVD / CVE Program· CNA Linux

CVE-2026-53329: drm/amd/display: Use krealloc_array() in dal_vector_reserve()

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.14% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Linux Linux 201151e120f0062bcda21cad5d007b82725ad23b, 31180638a33acad12c863132704a76536fb66211, 9540b0a4d13e4ede64ae1197d66a176d2149daa9; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.143.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 201151e120f0062bcda21cad5d007b82725ad23b, 31180638a33acad12c863132704a76536fb66211, 9540b0a4d13e4ede64ae1197d66a176d2149daa9; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.143.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Use krealloc_array() in dal_vector_reserve() [Why & How] dal_vector_reserve() computes the allocation size as "capacity * vector->struct_size" using uint32_t arithmetic, which can silently wrap to a small value on overflow. This would cause krealloc to return a smaller buffer than expected, leading to heap overflows on subsequent vector appends. Replace krealloc() with krealloc_array() which performs an internal overflow check and returns NULL on wrap, preventing the issue. (cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)

HighCVSS 7.0 · v3.1—No exploit Fix available
Published
Jul 1, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 3th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Linux
7.0
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.15 and later · before 5.10.260
  • linux linux kernel5.11 and later · before 5.15.210
  • linux linux kernel5.16 and later · before 6.1.176
  • linux linux kernel6.2 and later · before 6.6.143
  • linux linux kernel6.7 and later · before 6.12.94
  • linux linux kernel6.13 and later · before 6.18.36
  • linux linux kernel6.19 and later · before 7.0.13
  • linux linux kernel7.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.15affected
    • 2004f45ef83f07f43f5da6ede780b08068c7583d and later · before 9540b0a4d13e4ede64ae1197d66a176d2149daa9affected · git
    • 2004f45ef83f07f43f5da6ede780b08068c7583d and later · before 31180638a33acad12c863132704a76536fb66211affected · git
    • 2004f45ef83f07f43f5da6ede780b08068c7583d and later · before b15825deac1acff72638bbc8f05b89ceef8dfb13affected · git
    • 2004f45ef83f07f43f5da6ede780b08068c7583d and later · before 201151e120f0062bcda21cad5d007b82725ad23baffected · git
    • 2004f45ef83f07f43f5da6ede780b08068c7583d and later · before a914aa802669e073f014dae2e5708633b5cecd34affected · git
    • 2004f45ef83f07f43f5da6ede780b08068c7583d and later · before e09689286385a66311ac6922af95339d7a3cef8daffected · git
    • 2004f45ef83f07f43f5da6ede780b08068c7583d and later · before de988c7a31f0774f07894cfe4802996f318e2870affected · git
    • 2004f45ef83f07f43f5da6ede780b08068c7583d and later · before da48bc4461b8a5ebfb9264c9b191a701d8e99009affected · git
    • before 4.15not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10kernelbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64kbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-corebefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-debugbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-debug-corebefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-debug-develbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-debug-devel-matchedbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-debug-modulesbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-corebefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-debug-modules-extrabefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-develbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-devel-matchedbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-modulesbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-modules-corebefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-64k-modules-extrabefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-abi-stablelistsbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-corebefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-cross-headersbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-debugbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-debug-corebefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-debug-develbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-debug-devel-matchedbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-debug-modulesbefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2
AlmaLinux:10kernel-debug-modules-corebefore 6.12.0-211.49.1.el10_26.12.0-211.49.1.el10_2

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-53353Jul 1, 2026 · hsr: Remove WARN_ONCE() in hsr_addr_is_self().
    22Monitor
  • ← EarlierCVE-2026-53355Jul 1, 2026 · net: rds: clear i_sends on setup unwind
    39Monitor
  • Later →CVE-2026-53330Jul 1, 2026 · drm/amd/display: Fix out-of-bounds read in dp_get_eq_aux_rd_interval()
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux201151e120f0062bcda21cad5d007b82725ad23bVendor (CNA)
Linux Linux31180638a33acad12c863132704a76536fb66211Vendor (CNA)
Linux Linux9540b0a4d13e4ede64ae1197d66a176d2149daa9Vendor (CNA)
Linux Linuxa914aa802669e073f014dae2e5708633b5cecd34Vendor (CNA)
Linux Linuxb15825deac1acff72638bbc8f05b89ceef8dfb13Vendor (CNA)
Linux Linuxda48bc4461b8a5ebfb9264c9b191a701d8e99009Vendor (CNA)
Linux Linuxde988c7a31f0774f07894cfe4802996f318e2870Vendor (CNA)
Linux Linuxe09689286385a66311ac6922af95339d7a3cef8dVendor (CNA)
azl3 kernel 6.6.139.1-1 on Azure Linux 3.06.6.143.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:bpftool4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-abi-stablelists4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-core4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-cross-headers4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-core4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-devel4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-modules4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-debug-modules-extra4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-devel4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:kernel-doc4.18.0-553.156.1.el8_10 · AlmaLinux:8Package registry (OSV)
debian:linux6.1.176-1 · Debian:12Package registry (OSV)
red hat:bpftool0:4.18.0-553.156.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:bpftool-debuginfo0:4.18.0-553.156.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel0:4.18.0-553.156.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-abi-stablelists0:4.18.0-553.156.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-core0:4.18.0-553.156.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug0:4.18.0-553.156.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-core0:4.18.0-553.156.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:kernel-debug-debuginfo0:4.18.0-553.156.1.el8_10 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)

+6

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-4318556 days apartksmbd: fix signededness bug in smb_direct_prepare_negotiation()
    39Monitor
  • CVE-2026-532026 days apartaccel/ivpu: Fix signed integer truncation in IPC receive
    31Monitor
  • CVE-2026-532676 days apartnetfilter: nft_ct: bail out on template ct in get eval
    31Monitor
  • CVE-2025-38459341 days apartatm: clip: Fix infinite recursive call of clip_push().
    31Monitor
  • CVE-2026-5339518 days apartnfsd: fix dead ACL conflict guard in nfsd4_create
    30Monitor
  • CVE-2026-6421923 days apartdrm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async
    28Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-674 · Uncontrolled Recursion

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records