CVE-2023-53646

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-10-07. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

drm/i915/perf: add sentinel to xehp_oa_b_counters

Arrays passed to reg_in_range_table should end with empty record.

The patch solves KASAN detected bug with signature: BUG: KASAN: global-out-of-bounds in xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915] Read of size 4 at addr ffffffffa1555d90 by task perf/1518

CPU: 4 PID: 1518 Comm: perf Tainted: G U 6.4.0-kasan_438-g3303d06107f3+ #1 Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P DDR5 SODIMM SBS RVP, BIOS MTLPFWI1.R00.3223.D80.2305311348 05/31/2023 Call Trace:

... xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915]

(cherry picked from commit 2f42c5afb34b5696cf5fe79e744f99be9b218798)

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

October 7, 2025

Last Modified

August 5, 2026

Advisory Details (2)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

drm/i915/perf: add sentinel to xehp_oa_b_counters - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/785b3f667b4bf98804cad135005e964df0c750de
generic

drm/i915/perf: add sentinel to xehp_oa_b_counters - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/21d92025e80629fd5c25cd6751f8cf38c784dd4a

Vendor Advisories for CVE-2023-53646(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-427.13.1.el9_42024-04-30redhat
redhatkernel-0:4.18.0-513.5.1.el8_92023-11-14redhat
redhatkernel-0:5.14.0-362.8.1.el9_32023-11-07redhat
linuxKernel @ 6.4.7—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 17× in last 7d / 51× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 112 total refreshes for this CVE.

  1. 2026-08-05 19:15 UTCEPSS rescore
  2. 2026-08-05 19:15 UTCEPSS rescore
  3. 2026-08-05 10:16 UTCEG score recompute
  4. 2026-08-05 10:16 UTCVendor advisory
  5. 2026-08-05 10:16 UTCGHSA enrichment
  6. 2026-08-04 10:56 UTCEG score recompute
  7. 2026-08-04 10:56 UTCVendor advisory
  8. 2026-08-04 10:56 UTCGHSA enrichment
  9. 2026-08-04 10:36 UTCEPSS rescore
  10. 2026-08-04 09:29 UTCEG score recompute
  11. 2026-08-04 09:29 UTCVendor advisory
  12. 2026-08-04 09:29 UTCGHSA enrichment
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  24. 2026-07-23 18:11 UTCOSV refresh
  25. 2026-07-23 14:16 UTCEPSS rescore
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  1. 2026-07-23 02:29 UTCEG score recompute
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  3. 2026-07-22 14:07 UTCEPSS rescore
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  27. 2026-07-06 12:41 UTCOSV refresh
  28. 2026-07-06 02:22 UTCEPSS rescore
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  55. 2026-06-18 00:43 UTCOSV refresh
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Frequently asked(5)

What is CVE-2023-53646?
CVE-2023-53646 is a high vulnerability published on October 7, 2025. In the Linux kernel, the following vulnerability has been resolved: drm/i915/perf: add sentinel to xehpoab_counters Arrays passed to reginrange_table should end with empty record. The patch solves KASAN detected bug with signature: BUG: KASAN: global-out-of-bounds in…
When was CVE-2023-53646 disclosed?
CVE-2023-53646 was first published in the National Vulnerability Database on October 7, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-53646 actively exploited?
CVE-2023-53646 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 91.9% of all scored CVEs.
What is the CVSS score of CVE-2023-53646?
CVE-2023-53646 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2023-53646?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-53646, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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