Is CVE-2023-52504 in the CISA KEV catalog?

No. CVE-2023-52504 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-52504?

CVE-2023-52504 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2023-52504?

CVE-2023-52504 has an EPSS score of 0.27% (19th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-52504?

Upgrade linux on debian 11 to 5.10.205-1 or later. Fixes are available for 57 affected products.

CVE & CISA-KEV Catalog

CVE-2023-52504

HIGH

7.1

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: x86/alternatives: Disable KASAN in apply_alternatives() Fei has reported that KASAN triggers during apply_alternatives() on a 5-level paging machine: BUG: KASAN: out-of-bounds in rcu_is_watching() Read of size 4 at addr ff110003ee6419a0 by task swapper/0/0 ... __asan_load4() rcu_is_watching() trace_hardirqs_on() text_poke_early() apply_alternatives() ... On machines with 5-level paging, cpu_feature_enabled(X86_FEATURE_LA57) gets patched. It includes KASAN code, where KASAN_SHADOW_START depends on __VIRTUAL_MASK_SHIFT, which is defined with cpu_feature_enabled(). KASAN gets confused when apply_alternatives() patches the KASAN_SHADOW_START users. A test patch that makes KASAN_SHADOW_START static, by replacing __VIRTUAL_MASK_SHIFT with 56, works around the issue. Fix it for real by disabling KASAN while the kernel is patching alternatives. [ mingo: updated the changelog ]

CWE-125Out-of-bounds Read

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.205-1CVE-2023-52504

Fixed in:6.1.64-1CVE-2023-52504

Fixed in:6.5.8-1CVE-2023-52504

linuxUbuntu

Fixed in:5.4.0-186.206USN-6831-1

linux-awsUbuntu

Fixed in:5.4.0-1126.136USN-6831-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1126.136~18.04.1USN-6831-1

linux-azureUbuntu

Fixed in:5.4.0-1131.138USN-6831-1

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1131.138~18.04.1USN-6831-1

linux-gcpUbuntu

Fixed in:5.4.0-1130.139USN-6831-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1130.139~18.04.1USN-6831-1

linux-gkeopUbuntu

Fixed in:5.4.0-1093.97USN-6831-1

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-186.206~18.04.1USN-6831-1

linux-ibmUbuntu

Fixed in:5.4.0-1073.78USN-6831-1

linux-ibm-5.4Ubuntu

Fixed in:5.4.0-1073.78~18.04.1USN-6831-1

linux-image-5.4.0-1045-xilinx-zynqmpUbuntu

Fixed in:5.4.0-1045.49USN-6831-1

linux-image-5.4.0-1073-ibmUbuntu

Fixed in:5.4.0-1073.78~18.04.1USN-6831-1

Fixed in:5.4.0-1073.78USN-6831-1

linux-image-5.4.0-1093-gkeopUbuntu

Fixed in:5.4.0-1093.97USN-6831-1

linux-image-5.4.0-1110-raspiUbuntu

Fixed in:5.4.0-1110.122~18.04.1USN-6831-1

Fixed in:5.4.0-1110.122USN-6831-1

linux-image-5.4.0-1114-kvmUbuntu

Fixed in:5.4.0-1114.121USN-6831-1

linux-image-5.4.0-1125-oracleUbuntu

Fixed in:5.4.0-1125.134~18.04.1USN-6831-1

Fixed in:5.4.0-1125.134USN-6831-1

linux-image-5.4.0-1126-awsUbuntu

Fixed in:5.4.0-1126.136~18.04.1USN-6831-1

Fixed in:5.4.0-1126.136USN-6831-1

linux-image-5.4.0-1130-gcpUbuntu

Fixed in:5.4.0-1130.139~18.04.1USN-6831-1

Fixed in:5.4.0-1130.139USN-6831-1

linux-image-5.4.0-1131-azureUbuntu

Fixed in:5.4.0-1131.138~18.04.1USN-6831-1

Fixed in:5.4.0-1131.138USN-6831-1

linux-image-5.4.0-186-genericUbuntu

Fixed in:5.4.0-186.206~18.04.1USN-6831-1

Fixed in:5.4.0-186.206USN-6831-1

linux-image-5.4.0-186-generic-lpaeUbuntu

Fixed in:5.4.0-186.206USN-6831-1

linux-image-5.4.0-186-lowlatencyUbuntu

Fixed in:5.4.0-186.206~18.04.1USN-6831-1

Fixed in:5.4.0-186.206USN-6831-1

linux-image-awsUbuntu

Fixed in:5.4.0.1126.136~18.04.1USN-6831-1

linux-image-aws-lts-20.04Ubuntu

Fixed in:5.4.0.1126.123USN-6831-1

linux-image-azureUbuntu

Fixed in:5.4.0.1131.138~18.04.1USN-6831-1

linux-image-azure-lts-20.04Ubuntu

Fixed in:5.4.0.1131.125USN-6831-1

linux-image-gcpUbuntu

Fixed in:5.4.0.1130.139~18.04.1USN-6831-1

linux-image-gcp-lts-20.04Ubuntu

Fixed in:5.4.0.1130.132USN-6831-1

linux-image-genericUbuntu

Fixed in:5.4.0.186.184USN-6831-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

linux-image-generic-lpaeUbuntu

Fixed in:5.4.0.186.184USN-6831-1

linux-image-gkeopUbuntu

Fixed in:5.4.0.1093.91USN-6831-1

linux-image-gkeop-5.4Ubuntu

Fixed in:5.4.0.1093.91USN-6831-1

linux-image-ibmUbuntu

Fixed in:5.4.0.1073.78~18.04.1USN-6831-1

linux-image-ibm-lts-20.04Ubuntu

Fixed in:5.4.0.1073.102USN-6831-1

linux-image-kvmUbuntu

Fixed in:5.4.0.1114.110USN-6831-1

linux-image-lowlatencyUbuntu

Fixed in:5.4.0.186.184USN-6831-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

linux-image-oemUbuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

Fixed in:5.4.0.186.184USN-6831-1

linux-image-oem-osp1Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

Fixed in:5.4.0.186.184USN-6831-1

linux-image-oracleUbuntu

Fixed in:5.4.0.1125.134~18.04.1USN-6831-1

linux-image-oracle-lts-20.04Ubuntu

Fixed in:5.4.0.1125.118USN-6831-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1110.140USN-6831-1

linux-image-raspi-hwe-18.04Ubuntu

Fixed in:5.4.0.1110.122~18.04.1USN-6831-1

linux-image-raspi2Ubuntu

Fixed in:5.4.0.1110.140USN-6831-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

linux-image-virtualUbuntu

Fixed in:5.4.0.186.184USN-6831-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.186.206~18.04.1USN-6831-1

linux-image-xilinx-zynqmpUbuntu

Fixed in:5.4.0.1045.45USN-6831-1

linux-kvmUbuntu

Fixed in:5.4.0-1114.121USN-6831-1

linux-oracleUbuntu

Fixed in:5.4.0-1125.134USN-6831-1

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1125.134~18.04.1USN-6831-1

linux-raspiUbuntu

Fixed in:5.4.0-1110.122USN-6831-1

linux-raspi-5.4Ubuntu

Fixed in:5.4.0-1110.122~18.04.1USN-6831-1

linux-xilinx-zynqmpUbuntu

Fixed in:5.4.0-1045.49USN-6831-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.27%probability of exploitation in 30 days

19thpercentile

Low risk: more likely to be exploited than 19% of all known CVEs.

References

Patch7

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-12-11.