CVE-2026-46124

{"id": "CVE-2026-46124", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "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": "5e7de55602c61c8ff28db075cc49c8dd6989d7e0", "lessThan": "ee0024f5a7e3c73aa253869fae9650ae054093ca", "versionType": "git"}, {"status": "affected", "version": "63d5a3e207bf315a32c7d16de6c89753a759f95a", "lessThan": "31dbb4ba0f719ae7774e4c0c95172c9bf81692f5", "versionType": "git"}, {"status": "affected", "version": "0fdafdaef796816a9ed0fd7ac812932d569d9beb", "lessThan": "908a76f0b1038035e6ebb4f2293ce079f92e0a02", "versionType": "git"}, {"status": "affected", "version": "952e7a7e317f126d0a2b879fc531b716932d5ffa", "lessThan": "bb0988ed4f2e26d59bbb58f644cb3a55b7521e21", "versionType": "git"}, {"status": "affected", "version": "56dfffea9fd3be0b3795a9ca6401e133a8427e0b", "lessThan": "0a1af74ae2177bda3aee0837a0546309aa539d0d", "versionType": "git"}, {"status": "affected", "version": "0405d4b63d082861f4eaff9d39c78ee9dc34f845", "lessThan": "afbafeddf23db13fe2edb2d5c0bf4bbb13d7881b", "versionType": "git"}, {"status": "affected", "version": "0405d4b63d082861f4eaff9d39c78ee9dc34f845", "lessThan": "4c721a1d9b3c4fcaf59cc9b2281e3ec5a043e1a6", "versionType": "git"}, {"status": "affected", "version": "0405d4b63d082861f4eaff9d39c78ee9dc34f845", "lessThan": "24376458138387fb251e782e624c7776e9826796", "versionType": "git"}, {"status": "affected", "version": "ee01a309ebf598be1ff8174901ed6e91619f1749", "versionType": "git"}, {"status": "affected", "version": "007124c896e7d4614ac1f6bd4dedb975c35a2a8e", "versionType": "git"}, {"status": "affected", "version": "5.10.237", "lessThan": "5.10.258", "versionType": "semver"}, {"status": "affected", "version": "5.15.181", "lessThan": "5.15.209", "versionType": "semver"}, {"status": "affected", "version": "6.1.135", "lessThan": "6.1.175", "versionType": "semver"}, {"status": "affected", "version": "6.6.88", "lessThan": "6.6.140", "versionType": "semver"}, {"status": "affected", "version": "6.12.25", "lessThan": "6.12.88", "versionType": "semver"}, {"status": "affected", "version": "5.4.293", "lessThan": "5.5", "versionType": "semver"}, {"status": "affected", "version": "6.14.4", "lessThan": "6.15", "versionType": "semver"}], "programFiles": ["fs/isofs/export.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"status": "unaffected", "version": "0", "lessThan": "6.15", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"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": "6.6.140", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.88", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.30", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.7", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/isofs/export.c"], "defaultStatus": "affected"}]}], "published": "2026-05-28T10:16:27.920", "references": [{"url": "https://git.kernel.org/stable/c/0a1af74ae2177bda3aee0837a0546309aa539d0d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/24376458138387fb251e782e624c7776e9826796", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/31dbb4ba0f719ae7774e4c0c95172c9bf81692f5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4c721a1d9b3c4fcaf59cc9b2281e3ec5a043e1a6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/908a76f0b1038035e6ebb4f2293ce079f92e0a02", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/afbafeddf23db13fe2edb2d5c0bf4bbb13d7881b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bb0988ed4f2e26d59bbb58f644cb3a55b7521e21", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ee0024f5a7e3c73aa253869fae9650ae054093ca", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Undergoing Analysis", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nisofs: validate block number from NFS file handle in isofs_export_iget\n\nisofs_fh_to_dentry() and isofs_fh_to_parent() pass an attacker-\ncontrolled block number (ifid->block or ifid->parent_block) from\nthe NFS file handle to isofs_export_iget(), which only rejects\nblock == 0 before calling isofs_iget() and ultimately sb_bread().\nA crafted file handle with fh_len sufficient to pass the check\nadded by commit 0405d4b63d08 (\"isofs: Prevent the use of too small\nfid\") can still drive the server to read any in-range block on the\nbacking device as if it were an iso_directory_record. That earlier\nfix was assigned CVE-2025-37780.\n\nsb_bread() on an out-of-range block returns NULL cleanly via the\nEIO path, so there is no memory-safety violation. For in-range\nreads of adjacent-partition data on the same block device, the\nunrelated bytes end up in iso_inode_info fields that reach the NFS\nclient as dentry metadata. The deployment surface (isofs exported\nover NFS from loop-mounted images) is narrow and requires an\nauthenticated NFS peer, but the malformed-file-handle class is\nreportable as hardening next to the existing CVE-2025-37780 fix.\n\nReject block >= ISOFS_SB(sb)->s_nzones in isofs_export_iget() so\nthe check covers both isofs_fh_to_dentry() and isofs_fh_to_parent()\ncall sites with a single line."}], "lastModified": "2026-06-24T16:51:14.923", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4D6F83CA-7E5C-4A91-9D8C-71CC85535E7D", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.293"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D8832159-E9F2-4E3A-869E-F397B4D75488", "versionEndExcluding": "5.10.258", "versionStartIncluding": "5.10.237"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "319819D2-533D-4AE6-8CE2-84C6808BA7CB", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.15.181"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AB26E4C3-EF6C-4A53-AD49-F12E5001AEFB", "versionEndExcluding": "6.1.175", "versionStartIncluding": "6.1.135"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "78409D7B-A51C-439C-AF2E-F5FAF6F02BDC", "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.6.88"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AAED5477-21D0-4771-AF56-C4AC881021BC", "versionEndExcluding": "6.12.88", "versionStartIncluding": "6.12.25"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "786E593C-5048-4AE0-9421-71BE44AB6058", "versionEndExcluding": "6.15", "versionStartIncluding": "6.14.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5E3FC740-6BC4-42A2-9F5A-712E2A27869A", "versionEndExcluding": "6.18.30", "versionStartIncluding": "6.15.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D0893CA7-9AE6-4DFE-AC75-48967D73AD8E", "versionEndExcluding": "7.0.7", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A1ECC65A-EE37-4479-8E99-4BB68A22A31F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13FC0DDE-E513-465E-9E81-515702D49B74"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8C7B5B0E-4EEB-48F5-B4CF-0935A7633845"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2D240580-3048-49B2-9E27-F115A9DF8224"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "90320558-E553-4EF5-8A0B-0F5D20113BD2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C300BA32-5854-4B59-A00A-18A402F291D0"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}