CVE-2026-53048

In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2_log_flush() can be called when sdp->sd_jdesc has already been deallocated and sdp->sd_jdesc is NULL. Commit 35264909e9d1 ("gfs2: Fix NULL pointer dereference in gfs2_log_flush") added a check for that to gfs2_log_flush() itself, but it missed the sdp->sd_jdesc dereference in gfs2_log_release(). Fix that.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193	Patch
https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4de	Patch
https://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141d	Patch
https://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8	Patch
https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304a	Patch
https://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366	Patch
https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135	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

No history.

Information

Published : 2026-06-24 17:17

Updated : 2026-07-21 17:23

NVD link : CVE-2026-53048

Mitre link : CVE-2026-53048

CVE.ORG link : CVE-2026-53048

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2026-53048", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "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": "c3c5cfa3170c0940bc66a142859caac07d19b9d6", "lessThan": "cec55674354794eddb80b914f73a6bf9b7fc304a", "versionType": "git"}, {"status": "affected", "version": "5f6a84cfb33b34610623857bd93919dcb661e29b", "lessThan": "2fc4c868c9060f424fd4a7cacb0aec5082aba4de", "versionType": "git"}, {"status": "affected", "version": "3429ef5f50909cee9e498c50f0c499b9397116ce", "lessThan": "233a0945a4b1dbe3f38c30afb7d05b76c67f1193", "versionType": "git"}, {"status": "affected", "version": "35264909e9d1973ab9aaa2a1b07cda70f12bb828", "lessThan": "e15f16761594e80b15776980b27c35477655a135", "versionType": "git"}, {"status": "affected", "version": "35264909e9d1973ab9aaa2a1b07cda70f12bb828", "lessThan": "d8ffae016c4a78693fe1283335d0b6833a9c1366", "versionType": "git"}, {"status": "affected", "version": "35264909e9d1973ab9aaa2a1b07cda70f12bb828", "lessThan": "abd73229f0e886a91a16ea781ab656bd9b4d1ee8", "versionType": "git"}, {"status": "affected", "version": "35264909e9d1973ab9aaa2a1b07cda70f12bb828", "lessThan": "74b4dbb946060a3233604d91859a9abd3708141d", "versionType": "git"}, {"status": "affected", "version": "f54f9d5368a4e92ede7dd078a62788dae3a7c6ef", "versionType": "git"}, {"status": "affected", "version": "5.15.200", "lessThan": "5.15.209", "versionType": "semver"}, {"status": "affected", "version": "6.1.162", "lessThan": "6.1.175", "versionType": "semver"}, {"status": "affected", "version": "6.6.37", "lessThan": "6.6.141", "versionType": "semver"}, {"status": "affected", "version": "6.9.8", "lessThan": "6.10", "versionType": "semver"}], "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": "6.10"}, {"status": "unaffected", "version": "0", "lessThan": "6.10", "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": "2026-06-24T17:17:16.660", "references": [{"url": "https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4de", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: prevent NULL pointer dereference during unmount\n\nWhen flushing out outstanding glock work during an unmount, gfs2_log_flush()\ncan be called when sdp->sd_jdesc has already been deallocated and sdp->sd_jdesc\nis NULL. Commit 35264909e9d1 (\"gfs2: Fix NULL pointer dereference in\ngfs2_log_flush\") added a check for that to gfs2_log_flush() itself, but it\nmissed the sdp->sd_jdesc dereference in gfs2_log_release(). Fix that."}], "lastModified": "2026-07-21T17:23:05.930", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EDAA4C61-4A25-4AA1-8B31-ED5E798B58F4", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.15.200"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "75727B5C-E260-40C6-ADB0-FE828902A5F7", "versionEndExcluding": "6.1.175", "versionStartIncluding": "6.1.162"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E276D9C8-7496-4AF0-BD70-8EF81B02EA6F", "versionEndExcluding": "6.6.141", "versionStartIncluding": "6.6.37"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B5EFCD84-A38F-4C9D-91F4-C59A584F7188", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.9.8"}, {"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"}