CVE-2026-53049

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().

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3b28eb75afe520972bacc833850c2b30aa0824cd	Patch
https://git.kernel.org/stable/c/49d9be0722da3a4a893ba905720cba1921834ec3	Patch
https://git.kernel.org/stable/c/98e8bf249c790d56de1abc4a5f8bd68035a00921	Patch
https://git.kernel.org/stable/c/bf5fcd9c37c2546beaf7b401d31aefd89017dc3d	Patch
https://git.kernel.org/stable/c/ca95342cb1b39062a03c115830286f0a426053d5	Patch
https://git.kernel.org/stable/c/f2f225cf505ac016132ded21690f3ba0a080a4e8	Patch
https://git.kernel.org/stable/c/fe2c8d051150b90b3ccb85f89e3b1d636cb88ec8	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

19 Oct 2026, 20:18

Type	Values Removed	Values Added
CWE		CWE-362

Information

Published : 2026-06-24 17:17

Updated : 2026-10-19 20:18

NVD link : CVE-2026-53049

Mitre link : CVE-2026-53049

CVE.ORG link : CVE-2026-53049

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-667

Improper Locking

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

{"id": "CVE-2026-53049", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53049", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:24:53.809921Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5e4c7632aae1cce137792647f4fb6f599d1da893", "lessThan": "3b28eb75afe520972bacc833850c2b30aa0824cd", "versionType": "git"}, {"status": "affected", "version": "5e4c7632aae1cce137792647f4fb6f599d1da893", "lessThan": "ca95342cb1b39062a03c115830286f0a426053d5", "versionType": "git"}, {"status": "affected", "version": "5e4c7632aae1cce137792647f4fb6f599d1da893", "lessThan": "bf5fcd9c37c2546beaf7b401d31aefd89017dc3d", "versionType": "git"}, {"status": "affected", "version": "5e4c7632aae1cce137792647f4fb6f599d1da893", "lessThan": "f2f225cf505ac016132ded21690f3ba0a080a4e8", "versionType": "git"}, {"status": "affected", "version": "5e4c7632aae1cce137792647f4fb6f599d1da893", "lessThan": "49d9be0722da3a4a893ba905720cba1921834ec3", "versionType": "git"}, {"status": "affected", "version": "5e4c7632aae1cce137792647f4fb6f599d1da893", "lessThan": "98e8bf249c790d56de1abc4a5f8bd68035a00921", "versionType": "git"}, {"status": "affected", "version": "5e4c7632aae1cce137792647f4fb6f599d1da893", "lessThan": "fe2c8d051150b90b3ccb85f89e3b1d636cb88ec8", "versionType": "git"}], "programFiles": ["fs/gfs2/log.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"status": "unaffected", "version": "0", "lessThan": "5.7", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.141", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.91", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/gfs2/log.c"], "defaultStatus": "affected"}]}], "published": "2026-06-24T17:17:16.777", "references": [{"url": "https://git.kernel.org/stable/c/3b28eb75afe520972bacc833850c2b30aa0824cd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/49d9be0722da3a4a893ba905720cba1921834ec3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/98e8bf249c790d56de1abc4a5f8bd68035a00921", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bf5fcd9c37c2546beaf7b401d31aefd89017dc3d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ca95342cb1b39062a03c115830286f0a426053d5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f2f225cf505ac016132ded21690f3ba0a080a4e8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fe2c8d051150b90b3ccb85f89e3b1d636cb88ec8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-667"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-362"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: add some missing log locking\n\nFunction gfs2_logd() calls the log flushing functions gfs2_ail1_start(),\ngfs2_ail1_wait(), and gfs2_ail1_empty() without holding sdp->sd_log_flush_lock,\nbut these functions require exclusion against concurrent transactions.\n\nTo fix that, add a non-locking __gfs2_log_flush() function. Then, in\ngfs2_logd(), take sdp->sd_log_flush_lock before calling the above mentioned log\nflushing functions and __gfs2_log_flush()."}], "lastModified": "2026-10-19T20:18:57.120", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0835A3B8-EEC4-483D-BD00-9F31989A98E7", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "92385813-D91D-480D-83A1-F423D2CBB2BA", "versionEndExcluding": "6.1.175", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "97A9FFFA-22BB-4D5C-9790-5A2286E392F7", "versionEndExcluding": "6.6.141", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C918746B-DE6F-448F-A93E-A04C5481688D", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}