Is CVE-2024-56621 in the CISA KEV catalog?

No. CVE-2024-56621 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-56621?

CVE-2024-56621 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2024-56621?

CVE-2024-56621 has an EPSS score of 0.19% (9th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-56621?

Upgrade linux on debian 13 to 6.12.5-1 or later. Fixes are available for 113 affected products.

CVE & CISA-KEV Catalog

CVE-2024-56621

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Cancel RTC work during ufshcd_remove() Currently, RTC work is only cancelled during __ufshcd_wl_suspend(). When ufshcd is removed in ufshcd_remove(), RTC work is not cancelled. Due to this, any further trigger of the RTC work after ufshcd_remove() would result in a NULL pointer dereference as below: Unable to handle kernel NULL pointer dereference at virtual address 00000000000002a4 Workqueue: events ufshcd_rtc_work Call trace: _raw_spin_lock_irqsave+0x34/0x8c pm_runtime_get_if_active+0x24/0xb4 ufshcd_rtc_work+0x124/0x19c process_scheduled_works+0x18c/0x2d8 worker_thread+0x144/0x280 kthread+0x11c/0x128 ret_from_fork+0x10/0x20 Since RTC work accesses the ufshcd internal structures, it should be cancelled when ufshcd is removed. So do that in ufshcd_remove(), as per the order in ufshcd_init().

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

linuxDebian

Fixed in:6.12.5-1CVE-2024-56621

linuxUbuntu

Fixed in:6.8.0-58.60USN-7449-1

linux-awsUbuntu

Fixed in:6.8.0-1027.29USN-7449-1

linux-aws-6.8Ubuntu

Fixed in:6.8.0-1027.29~22.04.1USN-7451-1

linux-azureUbuntu

Fixed in:6.8.0-1027.32USN-7449-1

linux-azure-6.8Ubuntu

Fixed in:6.8.0-1027.32~22.04.1USN-7449-1

linux-azure-nvidiaUbuntu

Fixed in:6.8.0-1014.15USN-7468-1

linux-gcpUbuntu

Fixed in:6.8.0-1028.30USN-7450-1

linux-gcp-6.8Ubuntu

Fixed in:6.8.0-1028.30~22.04.1USN-7452-1

linux-gkeUbuntu

Fixed in:6.8.0-1023.27USN-7450-1

linux-gkeopUbuntu

Fixed in:6.8.0-1010.12USN-7450-1

linux-hwe-6.11Ubuntu

Fixed in:6.11.0-21.21~24.04.1USN-7379-1

linux-hwe-6.8Ubuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-ibmUbuntu

Fixed in:6.8.0-1024.24USN-7449-1

linux-image-6.11.0-1011-lowlatencyUbuntu

Fixed in:6.11.0-1011.12~24.04.1USN-7381-1

linux-image-6.11.0-1011-lowlatency-64kUbuntu

Fixed in:6.11.0-1011.12~24.04.1USN-7381-1

linux-image-6.11.0-1017-oemUbuntu

Fixed in:6.11.0-1017.17USN-7382-1

linux-image-6.11.0-21-genericUbuntu

Fixed in:6.11.0-21.21~24.04.1+1USN-7379-1

linux-image-6.11.0-21-generic-64kUbuntu

Fixed in:6.11.0-21.21~24.04.1+1USN-7379-1

linux-image-6.8.0-1010-gkeopUbuntu

Fixed in:6.8.0-1010.12USN-7450-1

linux-image-6.8.0-1014-azure-nvidiaUbuntu

Fixed in:6.8.0-1014.15USN-7468-1

linux-image-6.8.0-1023-gkeUbuntu

Fixed in:6.8.0-1023.27USN-7450-1

linux-image-6.8.0-1024-ibmUbuntu

Fixed in:6.8.0-1024.24USN-7449-1

linux-image-6.8.0-1024-oracleUbuntu

Fixed in:6.8.0-1024.25~22.04.1USN-7449-1

Fixed in:6.8.0-1024.25USN-7449-1

linux-image-6.8.0-1024-oracle-64kUbuntu

Fixed in:6.8.0-1024.25~22.04.1USN-7449-1

Fixed in:6.8.0-1024.25USN-7449-1

linux-image-6.8.0-1026-nvidiaUbuntu

Fixed in:6.8.0-1026.29~22.04.1USN-7449-1

Fixed in:6.8.0-1026.29USN-7449-1

linux-image-6.8.0-1026-nvidia-64kUbuntu

Fixed in:6.8.0-1026.29~22.04.1USN-7449-1

Fixed in:6.8.0-1026.29USN-7449-1

linux-image-6.8.0-1026-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1026.29.1USN-7449-1

linux-image-6.8.0-1026-nvidia-lowlatency-64kUbuntu

Fixed in:6.8.0-1026.29.1USN-7449-1

linux-image-6.8.0-1026-oemUbuntu

Fixed in:6.8.0-1026.26USN-7449-1

linux-image-6.8.0-1027-awsUbuntu

Fixed in:6.8.0-1027.29~22.04.1USN-7451-1

Fixed in:6.8.0-1027.29USN-7449-1

linux-image-6.8.0-1027-azureUbuntu

Fixed in:6.8.0-1027.32~22.04.1USN-7449-1

Fixed in:6.8.0-1027.32USN-7449-1

linux-image-6.8.0-1027-azure-fdeUbuntu

Fixed in:6.8.0-1027.32~22.04.1USN-7449-1

Fixed in:6.8.0-1027.32USN-7449-1

linux-image-6.8.0-1028-gcpUbuntu

Fixed in:6.8.0-1028.30~22.04.1USN-7452-1

Fixed in:6.8.0-1028.30USN-7450-1

linux-image-6.8.0-1028-gcp-64kUbuntu

Fixed in:6.8.0-1028.30~22.04.1USN-7452-1

Fixed in:6.8.0-1028.30USN-7450-1

linux-image-6.8.0-1028-raspiUbuntu

Fixed in:6.8.0-1028.32USN-7524-1

linux-image-6.8.0-2023-raspi-realtimeUbuntu

Fixed in:6.8.0-2023.24USN-7523-1

linux-image-6.8.0-58-genericUbuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

Fixed in:6.8.0-58.60+1USN-7449-1

linux-image-6.8.0-58-generic-64kUbuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

Fixed in:6.8.0-58.60+1USN-7449-1

linux-image-6.8.0-58-lowlatencyUbuntu

Fixed in:6.8.0-58.60.1~22.04.1USN-7449-1

Fixed in:6.8.0-58.60.1USN-7449-1

linux-image-6.8.0-58-lowlatency-64kUbuntu

Fixed in:6.8.0-58.60.1~22.04.1USN-7449-1

Fixed in:6.8.0-58.60.1USN-7449-1

linux-image-6.8.1-1020-realtimeUbuntu

Fixed in:6.8.1-1020.21USN-7453-1

linux-image-awsUbuntu

Fixed in:6.8.0-1027.29~22.04.1USN-7451-1

Fixed in:6.8.0-1027.29USN-7449-1

linux-image-aws-lts-24.04Ubuntu

Fixed in:6.8.0-1027.29USN-7449-1

linux-image-azureUbuntu

Fixed in:6.8.0-1027.32~22.04.1USN-7449-1

linux-image-azure-fdeUbuntu

Fixed in:6.8.0-1027.32~22.04.1USN-7449-1

linux-image-azure-fde-lts-24.04Ubuntu

Fixed in:6.8.0-1027.32USN-7449-1

linux-image-azure-lts-24.04Ubuntu

Fixed in:6.8.0-1027.32USN-7449-1

linux-image-azure-nvidiaUbuntu

Fixed in:6.8.0-1014.15USN-7468-1

linux-image-gcpUbuntu

Fixed in:6.8.0-1028.30~22.04.1USN-7452-1

linux-image-gcp-64kUbuntu

Fixed in:6.8.0-1028.30~22.04.1USN-7452-1

linux-image-gcp-64k-lts-24.04Ubuntu

Fixed in:6.8.0-1028.30USN-7450-1

linux-image-gcp-lts-24.04Ubuntu

Fixed in:6.8.0-1028.30USN-7450-1

linux-image-genericUbuntu

Fixed in:6.8.0-58.60USN-7449-1

linux-image-generic-64kUbuntu

Fixed in:6.8.0-58.60USN-7449-1

linux-image-generic-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-image-generic-64k-hwe-24.04Ubuntu

Fixed in:6.11.0-21.21~24.04.1USN-7379-1

linux-image-generic-hwe-22.04Ubuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-image-generic-hwe-24.04Ubuntu

Fixed in:6.11.0-21.21~24.04.1USN-7379-1

linux-image-generic-lpaeUbuntu

Fixed in:6.8.0-58.60USN-7449-1

linux-image-gkeUbuntu

Fixed in:6.8.0-1023.27USN-7450-1

linux-image-gkeopUbuntu

Fixed in:6.8.0-1010.12USN-7450-1

linux-image-gkeop-6.8Ubuntu

Fixed in:6.8.0-1010.12USN-7450-1

linux-image-ibmUbuntu

Fixed in:6.8.0-1024.24USN-7449-1

linux-image-ibm-classicUbuntu

Fixed in:6.8.0-1024.24USN-7449-1

linux-image-ibm-lts-24.04Ubuntu

Fixed in:6.8.0-1024.24USN-7449-1

linux-image-kvmUbuntu

Fixed in:6.8.0-58.60USN-7449-1

linux-image-lowlatencyUbuntu

Fixed in:6.8.0-58.60.1USN-7449-1

linux-image-lowlatency-64kUbuntu

Fixed in:6.8.0-58.60.1USN-7449-1

linux-image-lowlatency-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-58.60.1~22.04.1USN-7449-1

linux-image-lowlatency-64k-hwe-24.04Ubuntu

Fixed in:6.11.0-1011.12~24.04.1USN-7381-1

linux-image-lowlatency-hwe-22.04Ubuntu

Fixed in:6.8.0-58.60.1~22.04.1USN-7449-1

linux-image-lowlatency-hwe-24.04Ubuntu

Fixed in:6.11.0-1011.12~24.04.1USN-7381-1

linux-image-nvidiaUbuntu

Fixed in:6.8.0-1026.29USN-7449-1

linux-image-nvidia-6.8Ubuntu

Fixed in:6.8.0-1026.29~22.04.1USN-7449-1

linux-image-nvidia-64kUbuntu

Fixed in:6.8.0-1026.29USN-7449-1

linux-image-nvidia-64k-6.8Ubuntu

Fixed in:6.8.0-1026.29~22.04.1USN-7449-1

linux-image-nvidia-64k-hwe-22.04Ubuntu

Fixed in:6.8.0-1026.29~22.04.1USN-7449-1

linux-image-nvidia-hwe-22.04Ubuntu

Fixed in:6.8.0-1026.29~22.04.1USN-7449-1

linux-image-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1026.29.1USN-7449-1

linux-image-nvidia-lowlatency-64kUbuntu

Fixed in:6.8.0-1026.29.1USN-7449-1

linux-image-oem-22.04Ubuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-image-oem-22.04aUbuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-image-oem-22.04bUbuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-image-oem-22.04cUbuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-image-oem-22.04dUbuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-image-oem-24.04Ubuntu

Fixed in:6.8.0-1026.26USN-7449-1

linux-image-oem-24.04aUbuntu

Fixed in:6.8.0-1026.26USN-7449-1

linux-image-oem-24.04bUbuntu

Fixed in:6.11.0-1017.17USN-7382-1

linux-image-oracleUbuntu

Fixed in:6.8.0-1024.25~22.04.1USN-7449-1

Fixed in:6.8.0-1024.25USN-7449-1

linux-image-oracle-64kUbuntu

Fixed in:6.8.0-1024.25~22.04.1USN-7449-1

Fixed in:6.8.0-1024.25USN-7449-1

linux-image-oracle-64k-lts-24.04Ubuntu

Fixed in:6.8.0-1024.25USN-7449-1

linux-image-oracle-lts-24.04Ubuntu

Fixed in:6.8.0-1024.25USN-7449-1

linux-image-raspiUbuntu

Fixed in:6.8.0-1028.32USN-7524-1

linux-image-raspi-realtimeUbuntu

Fixed in:6.8.0-2023.24USN-7523-1

linux-image-realtimeUbuntu

Fixed in:6.8.1-1020.21USN-7453-1

linux-image-realtime-hwe-24.04Ubuntu

Fixed in:6.8.1-1020.21USN-7453-1

linux-image-virtualUbuntu

Fixed in:6.8.0-58.60USN-7449-1

linux-image-virtual-hwe-22.04Ubuntu

Fixed in:6.8.0-58.60~22.04.1USN-7449-2

linux-image-virtual-hwe-24.04Ubuntu

Fixed in:6.11.0-21.21~24.04.1USN-7379-1

linux-lowlatencyUbuntu

Fixed in:6.8.0-58.60.1USN-7449-1

linux-lowlatency-hwe-6.11Ubuntu

Fixed in:6.11.0-1011.12~24.04.1USN-7381-1

linux-lowlatency-hwe-6.8Ubuntu

Fixed in:6.8.0-58.60.1~22.04.1USN-7449-1

linux-nvidiaUbuntu

Fixed in:6.8.0-1026.29USN-7449-1

linux-nvidia-6.8Ubuntu

Fixed in:6.8.0-1026.29~22.04.1USN-7449-1

linux-nvidia-lowlatencyUbuntu

Fixed in:6.8.0-1026.29.1USN-7449-1

linux-oem-6.11Ubuntu

Fixed in:6.11.0-1017.17USN-7382-1

linux-oem-6.8Ubuntu

Fixed in:6.8.0-1026.26USN-7449-1

linux-oracleUbuntu

Fixed in:6.8.0-1024.25USN-7449-1

linux-oracle-6.8Ubuntu

Fixed in:6.8.0-1024.25~22.04.1USN-7449-1

linux-raspiUbuntu

Fixed in:6.8.0-1028.32USN-7524-1

linux-raspi-realtimeUbuntu

Fixed in:6.8.0-2023.24USN-7523-1

linux-realtimeUbuntu

Fixed in:6.8.1-1020.21USN-7453-1

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

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.19%probability of exploitation in 30 days

9thpercentile

Low risk: more likely to be exploited than 9% of all known CVEs.

References

Patch2

Other references1

git.kernel.org

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	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 2025-03-07.