Is CVE-2026-53049 in the CISA KEV catalog?

No. CVE-2026-53049 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-53049?

CVE-2026-53049 has a CVSS v3 base score of 9.8 (Critical).

What is the EPSS score for CVE-2026-53049?

CVE-2026-53049 has an EPSS score of 0.51% (40th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-53049?

Upgrade linux on debian 12 to 6.1.176-1 or later. Fixes are available for 107 affected products.

CVE & CISA-KEV Catalog

CVE-2026-53049

CRITICAL

9.8

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: gfs2: add some missing log locking Function gfs2_logd() calls the log flushing functions gfs2_ail1_start(), gfs2_ail1_wait(), and gfs2_ail1_empty() without holding sdp->sd_log_flush_lock, but these functions require exclusion against concurrent transactions. To fix that, add a non-locking __gfs2_log_flush() function. Then, in gfs2_logd(), take sdp->sd_log_flush_lock before calling the above mentioned log flushing functions and __gfs2_log_flush().

CWE-667

How to fix

Remediation Available

linuxDebian

Fixed in:6.1.176-1CVE-2026-53049

Fixed in:6.12.94-1CVE-2026-53049

Fixed in:7.0.10-1CVE-2026-53049

linuxUbuntu

Fixed in:5.15.0-186.196USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-gcpUbuntu

Fixed in:5.15.0-1112.122USN-8575-1

Fixed in:6.8.0-1064.72USN-8567-1

linux-gcp-6.8Ubuntu

Fixed in:6.8.0-1064.72~22.04.1USN-8567-1

linux-gcp-fipsUbuntu

Fixed in:5.15.0-1112.122+fips1USN-8575-1

Fixed in:6.8.0-1064.72+fips1USN-8574-1

linux-gkeUbuntu

Fixed in:5.15.0-1108.114USN-8575-1

Fixed in:6.8.0-1059.67USN-8567-1

linux-gkeopUbuntu

Fixed in:5.15.0-1095.103USN-8575-1

Fixed in:6.8.0-1046.50USN-8567-1

linux-hwe-5.15Ubuntu

Fixed in:5.15.0-186.196~20.04.1USN-8575-1

linux-hwe-7.0Ubuntu

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-5.15.0-1064-nvidia-tegraUbuntu

Fixed in:5.15.0-1064.66~20.04.1USN-8576-1

linux-image-5.15.0-1064-nvidia-tegra-rtUbuntu

Fixed in:5.15.0-1064.66~20.04.1USN-8576-1

linux-image-5.15.0-1075-xilinx-zynqmpUbuntu

Fixed in:5.15.0-1075.79USN-8575-1

linux-image-5.15.0-1095-gkeopUbuntu

Fixed in:5.15.0-1095.103USN-8575-1

linux-image-5.15.0-1104-kvmUbuntu

Fixed in:5.15.0-1104.109USN-8575-1

linux-image-5.15.0-1108-gkeUbuntu

Fixed in:5.15.0-1108.114USN-8575-1

linux-image-5.15.0-1111-realtimeUbuntu

Fixed in:5.15.0-1111.120USN-8575-1

linux-image-5.15.0-1112-gcpUbuntu

Fixed in:5.15.0-1112.122USN-8575-1

linux-image-5.15.0-1112-gcp-fipsUbuntu

Fixed in:5.15.0-1112.122+fips1USN-8575-1

linux-image-5.15.0-184-lowlatencyUbuntu

Fixed in:5.15.0-184.194~20.04.1USN-8575-1

Fixed in:5.15.0-184.194USN-8575-1

linux-image-5.15.0-184-lowlatency-64kUbuntu

Fixed in:5.15.0-184.194~20.04.1USN-8575-1

Fixed in:5.15.0-184.194USN-8575-1

linux-image-5.15.0-186-genericUbuntu

Fixed in:5.15.0-186.196~20.04.1USN-8575-1

Fixed in:5.15.0-186.196USN-8575-1

linux-image-5.15.0-186-generic-64kUbuntu

Fixed in:5.15.0-186.196~20.04.1USN-8575-1

Fixed in:5.15.0-186.196USN-8575-1

linux-image-5.15.0-186-generic-lpaeUbuntu

Fixed in:5.15.0-186.196~20.04.1USN-8575-1

Fixed in:5.15.0-186.196USN-8575-1

linux-image-6.8.0-1046-gkeopUbuntu

Fixed in:6.8.0-1046.50USN-8567-1

linux-image-6.8.0-1059-gkeUbuntu

Fixed in:6.8.0-1059.67USN-8567-1

linux-image-6.8.0-1059-gke-64kUbuntu

Fixed in:6.8.0-1059.67USN-8567-1

linux-image-6.8.0-1064-gcpUbuntu

Fixed in:6.8.0-1064.72~22.04.1USN-8567-1

Fixed in:6.8.0-1064.72USN-8567-1

linux-image-6.8.0-1064-gcp-64kUbuntu

Fixed in:6.8.0-1064.72~22.04.1USN-8567-1

Fixed in:6.8.0-1064.72USN-8567-1

linux-image-6.8.0-1064-gcp-fipsUbuntu

Fixed in:6.8.0-1064.72+fips1USN-8574-1

linux-image-6.8.0-136-genericUbuntu

Fixed in:6.8.0-136.136USN-8567-1

linux-image-6.8.0-136-generic-64kUbuntu

Fixed in:6.8.0-136.136USN-8567-1

linux-image-6.8.1-1056-realtimeUbuntu

Fixed in:6.8.1-1056.57~22.04.2USN-8567-1

Fixed in:6.8.1-1056.57USN-8567-1

linux-image-7.0.0-28-genericUbuntu

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-7.0.0-28-generic-64kUbuntu

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-gcpUbuntu

Fixed in:6.8.0-1064.72~22.04.1USN-8567-1

linux-image-gcp-5.15Ubuntu

Fixed in:5.15.0.1112.109USN-8575-1

linux-image-gcp-6.8Ubuntu

Fixed in:6.8.0-1064.72~22.04.1USN-8567-1

Fixed in:6.8.0-1064.72USN-8567-1

linux-image-gcp-64kUbuntu

Fixed in:6.8.0-1064.72~22.04.1USN-8567-1

linux-image-gcp-64k-6.8Ubuntu

Fixed in:6.8.0-1064.72~22.04.1USN-8567-1

Fixed in:6.8.0-1064.72USN-8567-1

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

Fixed in:6.8.0-1064.72USN-8567-1

linux-image-gcp-fipsUbuntu

Fixed in:5.15.0.1112.102USN-8575-1

Fixed in:6.8.0-1064.72+fips1USN-8574-1

linux-image-gcp-fips-5.15Ubuntu

Fixed in:5.15.0.1112.102USN-8575-1

linux-image-gcp-fips-6.8Ubuntu

Fixed in:6.8.0-1064.72+fips1USN-8574-1

linux-image-gcp-lts-22.04Ubuntu

Fixed in:5.15.0.1112.109USN-8575-1

linux-image-gcp-lts-24.04Ubuntu

Fixed in:6.8.0-1064.72USN-8567-1

linux-image-genericUbuntu

Fixed in:5.15.0.186.166USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-generic-5.15Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

Fixed in:5.15.0.186.166USN-8575-1

linux-image-generic-6.8Ubuntu

Fixed in:6.8.0-136.136USN-8567-1

linux-image-generic-64kUbuntu

Fixed in:5.15.0.186.166USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-generic-64k-5.15Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

Fixed in:5.15.0.186.166USN-8575-1

linux-image-generic-64k-6.8Ubuntu

Fixed in:6.8.0-136.136USN-8567-1

linux-image-generic-64k-7.0Ubuntu

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-generic-64k-hwe-20.04Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

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

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-generic-7.0Ubuntu

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-generic-hwe-20.04Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

linux-image-generic-hwe-24.04Ubuntu

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-generic-lpaeUbuntu

Fixed in:5.15.0.186.166USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-generic-lpae-5.15Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

Fixed in:5.15.0.186.166USN-8575-1

linux-image-generic-lpae-hwe-20.04Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

linux-image-gkeUbuntu

Fixed in:5.15.0.1108.107USN-8575-1

Fixed in:6.8.0-1059.67USN-8567-1

linux-image-gke-5.15Ubuntu

Fixed in:5.15.0.1108.107USN-8575-1

linux-image-gke-6.8Ubuntu

Fixed in:6.8.0-1059.67USN-8567-1

linux-image-gke-64kUbuntu

Fixed in:6.8.0-1059.67USN-8567-1

linux-image-gke-64k-6.8Ubuntu

Fixed in:6.8.0-1059.67USN-8567-1

linux-image-gkeopUbuntu

Fixed in:5.15.0.1095.94USN-8575-1

Fixed in:6.8.0-1046.50USN-8567-1

linux-image-gkeop-5.15Ubuntu

Fixed in:5.15.0.1095.94USN-8575-1

linux-image-gkeop-6.8Ubuntu

Fixed in:6.8.0-1046.50USN-8567-1

linux-image-intel-iot-realtimeUbuntu

Fixed in:6.8.1-1056.57USN-8567-1

linux-image-intel-iotgUbuntu

Fixed in:6.8.0-136.136USN-8567-1

linux-image-kvmUbuntu

Fixed in:5.15.0.1104.100USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-kvm-5.15Ubuntu

Fixed in:5.15.0.1104.100USN-8575-1

linux-image-laptop-23.10Ubuntu

Fixed in:6.8.0-136.136USN-8567-1

linux-image-lowlatencyUbuntu

Fixed in:5.15.0.184.155USN-8575-1

linux-image-lowlatency-5.15Ubuntu

Fixed in:5.15.0.184.194~20.04.1USN-8575-1

Fixed in:5.15.0.184.155USN-8575-1

linux-image-lowlatency-64kUbuntu

Fixed in:5.15.0.184.155USN-8575-1

linux-image-lowlatency-64k-5.15Ubuntu

Fixed in:5.15.0.184.194~20.04.1USN-8575-1

Fixed in:5.15.0.184.155USN-8575-1

linux-image-lowlatency-64k-hwe-20.04Ubuntu

Fixed in:5.15.0.184.194~20.04.1USN-8575-1

linux-image-lowlatency-hwe-20.04Ubuntu

Fixed in:5.15.0.184.194~20.04.1USN-8575-1

linux-image-nvidia-tegraUbuntu

Fixed in:5.15.0.1064.66~20.04.1USN-8576-1

linux-image-nvidia-tegra-5.15Ubuntu

Fixed in:5.15.0.1064.66~20.04.1USN-8576-1

linux-image-nvidia-tegra-rtUbuntu

Fixed in:5.15.0.1064.66~20.04.1USN-8576-1

linux-image-nvidia-tegra-rt-5.15Ubuntu

Fixed in:5.15.0.1064.66~20.04.1USN-8576-1

linux-image-oem-20.04Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

Fixed in:5.15.0.186.166USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-oem-20.04bUbuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-oem-20.04cUbuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-oem-20.04dUbuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-oem-22.04Ubuntu

Fixed in:6.8.0-136.136USN-8567-1

linux-image-realtimeUbuntu

Fixed in:5.15.0.1111.115USN-8575-1

Fixed in:6.8.1-1056.57USN-8567-1

linux-image-realtime-5.15Ubuntu

Fixed in:5.15.0.1111.115USN-8575-1

linux-image-realtime-6.8.1Ubuntu

Fixed in:6.8.1-1056.57~22.04.2USN-8567-1

Fixed in:6.8.1-1056.57USN-8567-1

linux-image-realtime-hwe-22.04Ubuntu

Fixed in:6.8.1-1056.57~22.04.2USN-8567-1

linux-image-virtualUbuntu

Fixed in:5.15.0.186.166USN-8575-1

Fixed in:6.8.0-136.136USN-8567-1

linux-image-virtual-5.15Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

Fixed in:5.15.0.186.166USN-8575-1

linux-image-virtual-6.8Ubuntu

Fixed in:6.8.0-136.136USN-8567-1

linux-image-virtual-7.0Ubuntu

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-virtual-hwe-20.04Ubuntu

Fixed in:5.15.0.186.196~20.04.1USN-8575-1

linux-image-virtual-hwe-24.04Ubuntu

Fixed in:7.0.0-28.28~24.04.1USN-8569-1

linux-image-xilinx-zynqmpUbuntu

Fixed in:5.15.0.1075.78USN-8575-1

linux-image-xilinx-zynqmp-5.15Ubuntu

Fixed in:5.15.0.1075.78USN-8575-1

linux-kvmUbuntu

Fixed in:5.15.0-1104.109USN-8575-1

linux-lowlatencyUbuntu

Fixed in:5.15.0-184.194USN-8575-1

linux-lowlatency-hwe-5.15Ubuntu

Fixed in:5.15.0-184.194~20.04.1USN-8575-1

linux-nvidia-tegra-5.15Ubuntu

Fixed in:5.15.0-1064.66~20.04.1USN-8576-1

linux-realtimeUbuntu

Fixed in:5.15.0-1111.120USN-8575-1

Fixed in:6.8.1-1056.57USN-8567-1

linux-realtime-6.8Ubuntu

Fixed in:6.8.1-1056.57~22.04.2USN-8567-1

linux-xilinx-zynqmpUbuntu

Fixed in:5.15.0-1075.79USN-8575-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.51%probability of exploitation in 30 days

40thpercentile

Moderate risk: more likely to be exploited than 40% of all known CVEs.

References

Patch7

Related Vulnerabilities

Other CWE-667 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-10072	High	7.5	73%	-	Fix
CVE-2002-1850	High	7.5	15%	-	Fix
CVE-2009-2699	High	7.5	14%	-	Fix
CVE-2004-0174	High	7.5	12%	-	-
CVE-2009-4272	High	7.5	11%	-	-
CVE-2020-24606	High	8.6	5.2%	-	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 2026-07-21.