{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-46303", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46303", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-06-08T15:46:30.642Z", "updatedAt": "2026-10-15T01:21:29.328Z", "importedAt": "2026-10-24T01:58:14.884Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "isofs: validate Rock Ridge CE continuation extent against volume size", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nisofs: validate Rock Ridge CE continuation extent against volume size\n\nrock_continue() reads rs->cont_extent verbatim from the Rock Ridge CE\nrecord and passes it to sb_bread() without checking that the block\nnumber is within the mounted ISO 9660 volume. commit e595447e177b\n(\"[PATCH] rock.c: handle corrupted directories\") added cont_offset\nand cont_size rejection for the CE continuation but did not validate\nthe extent block number itself. commit f54e18f1b831 (\"isofs: Fix\ninfinite looping over CE entries\") later capped the CE chain length\nat RR_MAX_CE_ENTRIES = 32 but again left the block number unchecked.\n\nWith a crafted ISO mounted via udisks2 (desktop optical auto-mount)\nor via CAP_SYS_ADMIN mount, rs->cont_extent can therefore point at\nan out-of-range block or at blocks belonging to an adjacent\nfilesystem on the same block device. sb_bread() on an out-of-range\nblock returns NULL cleanly via the block layer EIO path, so there\nis no memory-safety violation. For in-range reads of adjacent-\nfilesystem data, the CE buffer is parsed as Rock Ridge records and\nonly the text of SL sub-records reaches userspace through\nreadlink(), which makes the info-leak channel narrow and difficult\nto exploit; still, rejecting the malformed CE outright matches the\nrejection shape already present in the same function for\ncont_offset and cont_size.\n\nAdd an ISOFS_SB(sb)->s_nzones bounds check to rock_continue() next\nto the existing offset/size rejection, printing the same\ncorrupted-directory-entry notice.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "f54e18f1b831c92f6512d2eedb224cd63d607d3d", "status": "affected", "versionType": "git", "lessThan": "8356fb821016797f5677cbeee5ddc0d32a95b4be" }, { "version": "f54e18f1b831c92f6512d2eedb224cd63d607d3d", "status": "affected", "versionType": "git", "lessThan": "d582e12378bc1637f337622feef762f53c43fd57" }, { "version": "f54e18f1b831c92f6512d2eedb224cd63d607d3d", "status": "affected", "versionType": "git", "lessThan": "bf1bc673c587f5ef7e9c09b94aea7c5a7847d4d9" }, { "version": "f54e18f1b831c92f6512d2eedb224cd63d607d3d", "status": "affected", "versionType": "git", "lessThan": "c9b37c8b73f6368e4750e5ccb0632c380b43c6e5" }, { "version": "f54e18f1b831c92f6512d2eedb224cd63d607d3d", "status": "affected", "versionType": "git", "lessThan": "22b36fa081f38ab397c7697f9d539211b51a0cfc" }, { "version": "f54e18f1b831c92f6512d2eedb224cd63d607d3d", "status": "affected", "versionType": "git", "lessThan": "e69da8eeab74b4f4505024c38a17bce060fe7df8" }, { "version": "f54e18f1b831c92f6512d2eedb224cd63d607d3d", "status": "affected", "versionType": "git", "lessThan": "ef048470c90bc8c1b8318bb2ce329da9ef64b9fe" }, { "version": "f54e18f1b831c92f6512d2eedb224cd63d607d3d", "status": "affected", "versionType": "git", "lessThan": "a36d990f591320e9dd379ab30063ebfe91d47e1f" }, { "version": "08313e26e06d4aa9ce1cbba1a8e359e9cab9ad56", "status": "affected", "versionType": "git" }, { "version": "212c4d33ca83e2144064fe9c2911607fbed5386f", "status": "affected", "versionType": "git" }, { "version": "96e44adce250199ec9b2b928be66365779ff1b59", "status": "affected", "versionType": "git" }, { "version": "1fe5620fcd6c2f0a4a927ee10c8e53196da392f3", "status": "affected", "versionType": "git" }, { "version": "fbce0d7dc8965c9fb8d411862040239d4a768c71", "status": "affected", "versionType": "git" }, { "version": "8190393a88f2b0321263a54f2a9eb5a2aa43be7e", "status": "affected", "versionType": "git" }, { "version": "486aa789eadcf44ed87f972b209299c516454693", "status": "affected", "versionType": "git" }, { "version": "b6d20edb6e7cedb4eedb9e0193d20dd488ebae84", "status": "affected", "versionType": "git" }, { "version": "2.6.32.66", "status": "affected", "versionType": "semver", "lessThan": "2.6.33" }, { "version": "3.2.67", "status": "affected", "versionType": "semver", "lessThan": "3.3" }, { "version": "3.4.107", "status": "affected", "versionType": "semver", "lessThan": "3.5" }, { "version": "3.10.64", "status": "affected", "versionType": "semver", "lessThan": "3.11" }, { "version": "3.12.36", "status": "affected", "versionType": "semver", "lessThan": "3.13" }, { "version": "3.14.28", "status": "affected", "versionType": "semver", "lessThan": "3.15" }, { "version": "3.17.8", "status": "affected", "versionType": "semver", "lessThan": "3.18" }, { "version": "3.18.2", "status": "affected", "versionType": "semver", "lessThan": "3.19" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "3.19", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "3.19" }, { "version": "5.10.258", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.209", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.175", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.140", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.88", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.30", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.0.7", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.0.*" }, { "version": "7.1", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }