186 lines
9.8 KiB
JSON
186 lines
9.8 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-2026-53288",
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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": "2026-06-09T07:44:35.396Z",
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"datePublished": "2026-06-26T19:40:48.528Z",
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"dateUpdated": "2026-06-26T19:40:48.528Z"
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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": "2026-06-26T19:40:48.528Z"
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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\narm64: Reserve an extra page for early kernel mapping\n\nThe final part of [data, end) segment may overflow into the next page of\ninit_pg_end[1] which is the gap page before early_init_stack[2]:\n\n[1]\ncrash_arm64_v9.0.1> vtop ffffffed00601000\nVIRTUAL PHYSICAL\nffffffed00601000 83401000\n\nPAGE DIRECTORY: ffffffecffd62000\n PGD: ffffffecffd62da0 => 10000000833fb003\n PMD: ffffff80033fb018 => 10000000833fe003\n PTE: ffffff80033fe008 => 68000083401f03\n PAGE: 83401000\n\n PTE PHYSICAL FLAGS\n68000083401f03 83401000 (VALID|SHARED|AF|NG|PXN|UXN)\n\n PAGE PHYSICAL MAPPING INDEX CNT FLAGS\nfffffffec00d0040 83401000 0 0 1 4000 reserved\n\n[2]\nffffffed002c8000 (r) __pi__data\nffffffed0054e000 (d) __pi___bss_start\nffffffed005f5000 (b) __pi_init_pg_dir\nffffffed005fe000 (b) __pi_init_pg_end\nffffffed005ff000 (B) early_init_stack\nffffffed00608000 (b) __pi__end\n\nFor 4K pages, the early kernel mapping may use 2MB block entries but the\nkernel segments are only 64KB aligned. Segment boundaries that fall\nwithin a 2MB block therefore require a PTE table so that different\nattributes can be applied on either side of the boundary.\n\nKERNEL_SEGMENT_COUNT still correctly counts the five permanent kernel\nVMAs registered by declare_kernel_vmas(). However, since commit\n5973a62efa34 (\"arm64: map [_text, _stext) virtual address range\nnon-executable+read-only\"), the early mapper also maps [_text, _stext)\nseparately from [_stext, _etext). This adds one more early-only split\nand can require one more page-table page than the existing\nEARLY_SEGMENT_EXTRA_PAGES allowance reserves.\n\nIncrease the 4K-page early mapping allowance by one page to cover that\nadditional split.\n\n[catalin.marinas@arm.com: rewrote part of the commit log]\n[catalin.marinas@arm.com: expanded the code comment]"
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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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"arch/arm64/include/asm/kernel-pgtable.h"
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],
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"versions": [
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{
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"version": "fdd380a5950503a07aaaf74536a0c2f223475eb0",
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"lessThan": "a4ff33053da0a34b14abb5c96dc5a48379e26fce",
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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": "5973a62efa34c80c9a4e5eac1fca6f6209b902af",
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"lessThan": "dcb89deed40ba55ff7020061712fdabf098cc2cc",
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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": "5973a62efa34c80c9a4e5eac1fca6f6209b902af",
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"lessThan": "9fe9e3acaa14921b0cf0d6cc2de5b562499bf721",
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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": "5973a62efa34c80c9a4e5eac1fca6f6209b902af",
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"lessThan": "4d8e74ad4585672489da6145b3328d415f50db82",
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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": "88025faf2aa08c7468d68d8cb31a53b55aae6ee0",
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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": "6.12.54",
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"lessThan": "6.12.91",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.17.4",
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"lessThan": "6.18",
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"status": "affected",
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"versionType": "semver"
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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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"arch/arm64/include/asm/kernel-pgtable.h"
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],
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"versions": [
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{
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"version": "6.18",
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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": "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": "6.12.91",
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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": "6.18.33",
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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": "7.0.10",
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"lessThanOrEqual": "7.0.*",
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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",
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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": "6.12.54",
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"versionEndExcluding": "6.12.91"
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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": "6.18",
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"versionEndExcluding": "6.18.33"
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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": "6.18",
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"versionEndExcluding": "7.0.10"
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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": "6.18",
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"versionEndExcluding": "7.1"
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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": "6.17.4"
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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/a4ff33053da0a34b14abb5c96dc5a48379e26fce"
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},
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{
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"url": "https://git.kernel.org/stable/c/dcb89deed40ba55ff7020061712fdabf098cc2cc"
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},
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{
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"url": "https://git.kernel.org/stable/c/9fe9e3acaa14921b0cf0d6cc2de5b562499bf721"
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},
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{
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"url": "https://git.kernel.org/stable/c/4d8e74ad4585672489da6145b3328d415f50db82"
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}
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],
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"title": "arm64: Reserve an extra page for early kernel mapping",
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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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} |