{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-93268",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-17T16:02:15.097Z",
        "datePublished": "2026-09-24T15:52:07.310Z",
        "dateUpdated": "2026-10-19T09:08:22.372Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:08:22.372Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: skip extra isize expansion during mount to prevent deadlock\n\next4_try_to_expand_extra_isize() is called from __ext4_mark_inode_dirty()\nwhile holding an active jbd2 handle.  During mount (!SB_ACTIVE), the\nexpand path may move xattrs to external blocks and release ea_inodes via\niput().  When !SB_ACTIVE, iput() calls write_inode_now() which acquires\ns_writepages_rwsem, creating a circular lock dependency:\n\n  s_writepages_rwsem --> jbd2_handle --> xattr_sem --> s_writepages_rwsem\n\nThis can be triggered via:\n\n  ext4_process_orphan() -> ext4_truncate() -> ext4_mark_inode_dirty()\n    -> ext4_try_to_expand_extra_isize()\n\nor:\n\n  ext4_evict_inode() -> ext4_mark_inode_dirty()\n    -> ext4_try_to_expand_extra_isize()\n\nSkip expansion when !SB_ACTIVE.  This is a minor loss of functionality\n(extra isize won't grow for these inodes during mount), which e2fsck\ncan resolve later if needed."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/inode.c"
                    ],
                    "versions": [
                        {
                            "version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f",
                            "lessThan": "41897f1bcf4ace5f1f28d0be784b6f4f0e929641",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f",
                            "lessThan": "9c3469377b1d8caba6bec6ef3c460810bbfb02cc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f",
                            "lessThan": "1dd4882dbdc8bfdf2182fa388883c143fac0902a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f",
                            "lessThan": "7ba09330d9ea6e996228316719eae812d7e04983",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f",
                            "lessThan": "c5e6434cc55f30220b228be237bb666351f9f4dd",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f",
                            "lessThan": "7ace189b9ea79cf78df9c32b940ce12735f9459a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f",
                            "lessThan": "2fb8ff81659a57c42bb7b49e8339a2be2a318ef8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8585c6fcaf2011de54c3592e80a634a2b9e1a7f",
                            "lessThan": "7461c60b9c6a839b13ad4c3490681a0cf5aa0637",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ext4/inode.c"
                    ],
                    "versions": [
                        {
                            "version": "4.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "7.2.6"
                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.7",
                                    "versionEndExcluding": "7.3"
                                }
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/41897f1bcf4ace5f1f28d0be784b6f4f0e929641"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9c3469377b1d8caba6bec6ef3c460810bbfb02cc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1dd4882dbdc8bfdf2182fa388883c143fac0902a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7ba09330d9ea6e996228316719eae812d7e04983"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c5e6434cc55f30220b228be237bb666351f9f4dd"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7ace189b9ea79cf78df9c32b940ce12735f9459a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2fb8ff81659a57c42bb7b49e8339a2be2a318ef8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7461c60b9c6a839b13ad4c3490681a0cf5aa0637"
                }
            ],
            "title": "ext4: skip extra isize expansion during mount to prevent deadlock",
            "x_generator": {
                "engine": "bippy-1.2.0"
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}