{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"8356fb821016797f5677cbeee5ddc0d32a95b4be","status":"affected","version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","versionType":"git"},{"lessThan":"d582e12378bc1637f337622feef762f53c43fd57","status":"affected","version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","versionType":"git"},{"lessThan":"bf1bc673c587f5ef7e9c09b94aea7c5a7847d4d9","status":"affected","version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","versionType":"git"},{"lessThan":"c9b37c8b73f6368e4750e5ccb0632c380b43c6e5","status":"affected","version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","versionType":"git"},{"lessThan":"22b36fa081f38ab397c7697f9d539211b51a0cfc","status":"affected","version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","versionType":"git"},{"lessThan":"e69da8eeab74b4f4505024c38a17bce060fe7df8","status":"affected","version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","versionType":"git"},{"lessThan":"ef048470c90bc8c1b8318bb2ce329da9ef64b9fe","status":"affected","version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","versionType":"git"},{"lessThan":"a36d990f591320e9dd379ab30063ebfe91d47e1f","status":"affected","version":"f54e18f1b831c92f6512d2eedb224cd63d607d3d","versionType":"git"},{"status":"affected","version":"08313e26e06d4aa9ce1cbba1a8e359e9cab9ad56","versionType":"git"},{"status":"affected","version":"212c4d33ca83e2144064fe9c2911607fbed5386f","versionType":"git"},{"status":"affected","version":"96e44adce250199ec9b2b928be66365779ff1b59","versionType":"git"},{"status":"affected","version":"1fe5620fcd6c2f0a4a927ee10c8e53196da392f3","versionType":"git"},{"status":"affected","version":"fbce0d7dc8965c9fb8d411862040239d4a768c71","versionType":"git"},{"status":"affected","version":"8190393a88f2b0321263a54f2a9eb5a2aa43be7e","versionType":"git"},{"status":"affected","version":"486aa789eadcf44ed87f972b209299c516454693","versionType":"git"},{"status":"affected","version":"b6d20edb6e7cedb4eedb9e0193d20dd488ebae84","versionType":"git"},{"lessThan":"2.6.33","status":"affected","version":"2.6.32.66","versionType":"semver"},{"lessThan":"3.3","status":"affected","version":"3.2.67","versionType":"semver"},{"lessThan":"3.5","status":"affected","version":"3.4.107","versionType":"semver"},{"lessThan":"3.11","status":"affected","version":"3.10.64","versionType":"semver"},{"lessThan":"3.13","status":"affected","version":"3.12.36","versionType":"semver"},{"lessThan":"3.15","status":"affected","version":"3.14.28","versionType":"semver"},{"lessThan":"3.18","status":"affected","version":"3.17.8","versionType":"semver"},{"lessThan":"3.19","status":"affected","version":"3.18.2","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"3.19"},{"lessThan":"3.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.140","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.30","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"0","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.6","versionType":"custom"}]},{"defaultStatus":"unknown","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)","source":"ADP: siemens-SADP","vendor":"Siemens","versions":[{"lessThan":"*","status":"affected","version":"V3.1.7","versionType":"custom"}]}],"cveId":"CVE-2026-46303","cwes":[],"description":"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.","epss":{"date":"2026-11-09","percentile":0.25208,"score":0.0032},"exploits":[],"kev":null,"metrics":[{"score":8.2,"severity":"high","source":"CNA: Linux","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"}],"modifiedAt":1794314847221,"publishedAt":1780933590642,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/8356fb821016797f5677cbeee5ddc0d32a95b4be"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/d582e12378bc1637f337622feef762f53c43fd57"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/bf1bc673c587f5ef7e9c09b94aea7c5a7847d4d9"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/c9b37c8b73f6368e4750e5ccb0632c380b43c6e5"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/22b36fa081f38ab397c7697f9d539211b51a0cfc"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e69da8eeab74b4f4505024c38a17bce060fe7df8"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/ef048470c90bc8c1b8318bb2ce329da9ef64b9fe"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/a36d990f591320e9dd379ab30063ebfe91d47e1f"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html"},{"source":"ADP: siemens-SADP","tags":[],"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}],"remediation":[],"revision":"ba623ff6c1ff16572295aa7f31a0cb1b0ae204d74f8dce37e788647b889acfaa","sources":[{"modifiedAt":1794314847221,"name":"CNA: Linux","retrievedAt":1794316657941,"url":"https://www.cve.org/CVERecord?id=CVE-2026-46303"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794316685595,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-46303"}],"ssvc":null,"status":"published","title":"isofs: validate Rock Ridge CE continuation extent against volume size","updatedAt":1794316685595}