269 lines
14 KiB
JSON
269 lines
14 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-80807",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-26T14:34:25.794Z",
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"datePublished": "2026-09-04T15:13:23.605Z",
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"dateUpdated": "2026-10-19T08:44:00.360Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T08:44:00.360Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: reject invalid block index in GC ioctl\n\nSyzbot reported list corruption caused by a double list_add_tail() call on\nbh->b_assoc_buffers within nilfs_lookup_dirty_data_buffers().\n\nAnalysis revealed that the root cause was the insertion of a page/folio\nwith a page index of ULONG_MAX into the page cache via the GC ioctl.\nfilemap_get_folios_tag(), called by nilfs_lookup_dirty_data_buffers(),\nrepeatedly detects a dirty folio with a page index of ULONG_MAX due to\nindex wrap-around, leading to duplicate processing of dirty buffers.\n\nAs a preparatory step, the GC ioctl loads the page/folio of the block to\nbe moved during GC and inserts it into the page cache based on information\nin the nilfs_vdesc structure passed as an argument. Normally, this does\nnot cause issues because the user-space GC library configures the\nnilfs_vdesc structure properly. However, since there is no range check on\nthe parameters determining the page index, a request with artificially\ncrafted parameters -- such as those generated by Syzbot -- can result in a\npage/folio being inserted with a page index of ULONG_MAX, triggering the\nabove problem.\n\nThis resolves the issue by checking the ranges of 'vd_offset' and\n'vd_vblocknr' in the nilfs_vdesc structure that determine the page index,\nthereby preventing the invalid page/folio insertions."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/nilfs2/ioctl.c"
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],
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"versions": [
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "898404cdf882d7b54f1132f75570984ca3214796",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "ba8a8b563a28d358c45c62a306d421434a058648",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "3bd064ccc70b85f9a3d53aece29dc8473be5a226",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "a5e776e2937581d67ec5b9b4d27b0f70d7baa6b1",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "68aa9ab6f8f2895713aa6ddf781463ed8ea5ba44",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "e447f7edb99bd00cec63d6f3049e2e5074946f71",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "ec6ddf271dfa4c7e3147bc2c8b2bad4315f316a1",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "fbcfb75c20d71a5b542ad4ac3b79d10b997c8152",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7942b919f7321f95a777d396ff7894a7a83dc9b0",
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"lessThan": "a1735eae55448bc79c2da6593455791e886f6ed8",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/nilfs2/ioctl.c"
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],
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"versions": [
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{
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"version": "2.6.30",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.30",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.269",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.220",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.187",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.156",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.108",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.47",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.11",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.1",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "5.10.269"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "5.15.220"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "6.1.187"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "6.6.156"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "6.12.108"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "6.18.47"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "7.1.11"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "7.2.1"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/898404cdf882d7b54f1132f75570984ca3214796"
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},
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{
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"url": "https://git.kernel.org/stable/c/ba8a8b563a28d358c45c62a306d421434a058648"
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},
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{
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"url": "https://git.kernel.org/stable/c/3bd064ccc70b85f9a3d53aece29dc8473be5a226"
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},
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{
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"url": "https://git.kernel.org/stable/c/a5e776e2937581d67ec5b9b4d27b0f70d7baa6b1"
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},
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{
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"url": "https://git.kernel.org/stable/c/68aa9ab6f8f2895713aa6ddf781463ed8ea5ba44"
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},
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{
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"url": "https://git.kernel.org/stable/c/e447f7edb99bd00cec63d6f3049e2e5074946f71"
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},
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{
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"url": "https://git.kernel.org/stable/c/ec6ddf271dfa4c7e3147bc2c8b2bad4315f316a1"
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},
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{
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"url": "https://git.kernel.org/stable/c/fbcfb75c20d71a5b542ad4ac3b79d10b997c8152"
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},
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{
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"url": "https://git.kernel.org/stable/c/a1735eae55448bc79c2da6593455791e886f6ed8"
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}
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],
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"title": "nilfs2: reject invalid block index in GC ioctl",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |