CVE-2026-53048

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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."}], "id": "CVE-2026-53048", "lastModified": "2026-11-06T17:18:03.090", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53048", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:17:12.720046Z", "version": "2.0.3"}}]}, "published": "2026-06-24T17:17:16.660", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4de"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: gfs2: prevent NULL pointer dereference during unmount", "id": "2492457", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492457"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's gfs2 filesystem. During the unmount process, a NULL pointer dereference can occur when flushing outstanding glock work. This happens because `gfs2_log_flush()` is called when a critical data structure (`sdp->sd_jdesc`) has already been deallocated, and a subsequent dereference in `gfs2_log_release()` lacks a necessary NULL check. An attacker could potentially exploit this to cause a system crash, leading to a Denial of Service (DoS)."], "name": "CVE-2026-53048", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53048\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53048\nhttps://lore.kernel.org/linux-cve-announce/2026062459-CVE-2026-53048-9cd0@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c3c5cfa3170c0940bc66a142859caac07d19b9d6,cec55674354794eddb80b914f73a6bf9b7fc304a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5f6a84cfb33b34610623857bd93919dcb661e29b,2fc4c868c9060f424fd4a7cacb0aec5082aba4de)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3429ef5f50909cee9e498c50f0c499b9397116ce,233a0945a4b1dbe3f38c30afb7d05b76c67f1193)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[35264909e9d1973ab9aaa2a1b07cda70f12bb828,e15f16761594e80b15776980b27c35477655a135)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[35264909e9d1973ab9aaa2a1b07cda70f12bb828,d8ffae016c4a78693fe1283335d0b6833a9c1366)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[35264909e9d1973ab9aaa2a1b07cda70f12bb828,abd73229f0e886a91a16ea781ab656bd9b4d1ee8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[35264909e9d1973ab9aaa2a1b07cda70f12bb828,74b4dbb946060a3233604d91859a9abd3708141d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "f54f9d5368a4e92ede7dd078a62788dae3a7c6ef"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.200,5.15.209)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.162,6.1.175)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.37,6.6.141)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.9.8,6.10)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.209,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.175,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.141,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.91,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.33,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0.10,7.0.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-24T19:30:08.643121+00:00", "updated": "2026-08-13T15:30:04.399292+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}