{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46046", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.094Z", "datePublished": "2026-05-27T12:57:02.610Z", "dateUpdated": "2026-05-27T12:57:02.610Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-27T12:57:02.610Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()\n\nThe commit c8e008b60492 (\"ext4: ignore xattrs past end\")\nintroduced a refcount leak in when block_csum is false.\n\next4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to\nget iloc.bh, but never releases it with brelse()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/xattr.c"], "versions": [{"version": "362a90cecd36e8a5c415966d0b75b04a0270e4dd", "lessThan": "1bc1107a3a403a6d440673ed6666f7b07ef868a8", "status": "affected", "versionType": "git"}, {"version": "eb59cc31b6ea076021d14b04e7faab1636b87d0e", "lessThan": "097227f1ffe1a85bc3c359f81c71e3d40e06e920", "status": "affected", "versionType": "git"}, {"version": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd", "lessThan": "1e6b0a69bf2c9c819255c7566e4355536d81d9cf", "status": "affected", "versionType": "git"}, {"version": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd", "lessThan": "f072906688933bf47fabbaf63560be03357c8298", "status": "affected", "versionType": "git"}, {"version": "c8e008b60492cf6fd31ef127aea6d02fd3d314cd", "lessThan": "77d059519382bd66283e6a4e83ee186e87e7708f", "status": "affected", "versionType": "git"}, {"version": "6aff941cb0f7d0c897c3698ad2e30672709135e3", "status": "affected", "versionType": "git"}, {"version": "76c365fa7e2a8bb85f0190cdb4b8cdc99b2fdce3", "status": "affected", "versionType": "git"}, {"version": "f737418b6de31c962c7192777ee4018906975383", "status": "affected", "versionType": "git"}, {"version": "cf9291a3449b04688b81e32621e88de8f4314b54", "status": "affected", "versionType": "git"}, {"version": "3bc6317033f365ce578eb6039445fb66162722fd", "status": "affected", "versionType": "git"}, {"version": "836e625b03a666cf93ff5be328c8cb30336db872", "status": "affected", "versionType": "git"}, {"version": "6.6.88", "lessThan": "6.6.140", "status": "affected", "versionType": "semver"}, {"version": "6.12.24", "lessThan": "6.12.86", "status": "affected", "versionType": "semver"}, {"version": "5.4.293", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "5.10.237", "lessThan": "5.11", "status": "affected", "versionType": "semver"}, {"version": "5.15.181", "lessThan": "5.16", "status": "affected", "versionType": "semver"}, {"version": "6.1.135", "lessThan": "6.2", "status": "affected", "versionType": "semver"}, {"version": "6.13.12", "lessThan": "6.14", "status": "affected", "versionType": "semver"}, {"version": "6.14.3", "lessThan": "6.15", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/xattr.c"], "versions": [{"version": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1-rc1", "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": "6.6.88", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.24", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.1-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.293"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.237"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.181"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.135"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8"}, {"url": "https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920"}, {"url": "https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf"}, {"url": "https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298"}, {"url": "https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f"}], "title": "ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()\n\nThe commit c8e008b60492 (\"ext4: ignore xattrs past end\")\nintroduced a refcount leak in when block_csum is false.\n\next4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to\nget iloc.bh, but never releases it with brelse()."}], "id": "CVE-2026-46046", "lastModified": "2026-05-27T14:48:03.013", "metrics": {}, "published": "2026-05-27T14:17:24.083", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/097227f1ffe1a85bc3c359f81c71e3d40e06e920"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all()", "id": "2481931", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481931"}, "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-911", "details": ["A flaw was found in the Linux kernel's ext4 filesystem. A reference count (refcount) leak occurs in the `ext4_xattr_inode_dec_ref_all()` function. This issue arises because the `iloc.bh` buffer head, acquired by `ext4_get_inode_loc()`, is not properly released with `brelse()`. This can lead to resource exhaustion or system instability over time."], "name": "CVE-2026-46046", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46046\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46046\nhttps://lore.kernel.org/linux-cve-announce/2026052752-CVE-2026-46046-045e@gregkh/T"], "threat_severity": "Low"}