CVE-2026-72487 - Vulnerability Details

Vendors	Products
Linux	Linux Kernel

Link	Providers
https://git.kernel.org/stable/c/1d495446ec7ace5b61da366ffb161ee8319dd9a2
https://git.kernel.org/stable/c/4997873e3abbad47a9e1e4abd05f045f77a74f22
https://git.kernel.org/stable/c/538796b807fcfb81b2ce40cc97a614fd8588feb5
https://git.kernel.org/stable/c/721ad5b72448b5065ed309017ab563205f162404
https://git.kernel.org/stable/c/724042f8f98d2594b9d164549fd4292c6bd58120
https://git.kernel.org/stable/c/cd5b242d5848369b9e957340a7e30adee7b6763d

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: PCI: Check ROM header and data structure addr before accessing We meet a crash when running stress-ng on x86_64 machine: BUG: unable to handle page fault for address: ffa0000007f40000 RIP: 0010:pci_get_rom_size+0x52/0x220 Call Trace: <TASK> pci_map_rom+0x80/0x130 pci_read_rom+0x4b/0xe0 kernfs_file_read_iter+0x96/0x180 vfs_read+0x1b1/0x300 Our analysis reveals that the ROM space's start address is 0xffa0000007f30000, and size is 0x10000. Because of broken ROM space, before calling readl(pds), the pds's value is 0xffa0000007f3ffff, which is already pointed to the ROM space end, invoking readl() would read 4 bytes therefore cause an out-of-bounds access and trigger a crash. Fix this by adding image header and data structure checking. We also found another crash on arm64 machine: Unable to handle kernel paging request at virtual address ffff8000dd1393ff Mem abort info: ESR = 0x0000000096000021 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x21: alignment fault The call trace is the same with x86_64, but the crash reason is that the data structure addr is not aligned with 4, and arm64 machine report "alignment fault". Fix this by adding alignment checking. [bhelgaas: shorten function names, wrap comments]
Title		PCI: Check ROM header and data structure addr before accessing
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/1d495446ec7ace5b61da366ffb161ee8319dd9a2 https://git.kernel.org/stable/c/4997873e3abbad47a9e1e4abd05f045f77a74f22 https://git.kernel.org/stable/c/538796b807fcfb81b2ce40cc97a614fd8588feb5 https://git.kernel.org/stable/c/721ad5b72448b5065ed309017ab563205f162404 https://git.kernel.org/stable/c/724042f8f98d2594b9d164549fd4292c6bd58120 https://git.kernel.org/stable/c/cd5b242d5848369b9e957340a7e30adee7b6763d

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72487", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.936Z", "datePublished": "2026-08-15T05:57:23.490Z", "dateUpdated": "2026-08-15T05:57:23.490Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T05:57:23.490Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Check ROM header and data structure addr before accessing\n\nWe meet a crash when running stress-ng on x86_64 machine:\n\n BUG: unable to handle page fault for address: ffa0000007f40000\n RIP: 0010:pci_get_rom_size+0x52/0x220\n Call Trace:\n <TASK>\n pci_map_rom+0x80/0x130\n pci_read_rom+0x4b/0xe0\n kernfs_file_read_iter+0x96/0x180\n vfs_read+0x1b1/0x300\n\nOur analysis reveals that the ROM space's start address is\n0xffa0000007f30000, and size is 0x10000. Because of broken ROM space,\nbefore calling readl(pds), the pds's value is 0xffa0000007f3ffff, which is\nalready pointed to the ROM space end, invoking readl() would read 4 bytes\ntherefore cause an out-of-bounds access and trigger a crash. Fix this by\nadding image header and data structure checking.\n\nWe also found another crash on arm64 machine:\n\n Unable to handle kernel paging request at virtual address ffff8000dd1393ff\n Mem abort info:\n ESR = 0x0000000096000021\n EC = 0x25: DABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x21: alignment fault\n\nThe call trace is the same with x86_64, but the crash reason is that the\ndata structure addr is not aligned with 4, and arm64 machine report\n\"alignment fault\". Fix this by adding alignment checking.\n\n[bhelgaas: shorten function names, wrap comments]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/rom.c"], "versions": [{"version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "lessThan": "cd5b242d5848369b9e957340a7e30adee7b6763d", "status": "affected", "versionType": "git"}, {"version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "lessThan": "4997873e3abbad47a9e1e4abd05f045f77a74f22", "status": "affected", "versionType": "git"}, {"version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "lessThan": "724042f8f98d2594b9d164549fd4292c6bd58120", "status": "affected", "versionType": "git"}, {"version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "lessThan": "1d495446ec7ace5b61da366ffb161ee8319dd9a2", "status": "affected", "versionType": "git"}, {"version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "lessThan": "721ad5b72448b5065ed309017ab563205f162404", "status": "affected", "versionType": "git"}, {"version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "lessThan": "538796b807fcfb81b2ce40cc97a614fd8588feb5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/rom.c"], "versions": [{"version": "4.5", "status": "affected"}, {"version": "0", "lessThan": "4.5", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/cd5b242d5848369b9e957340a7e30adee7b6763d"}, {"url": "https://git.kernel.org/stable/c/4997873e3abbad47a9e1e4abd05f045f77a74f22"}, {"url": "https://git.kernel.org/stable/c/724042f8f98d2594b9d164549fd4292c6bd58120"}, {"url": "https://git.kernel.org/stable/c/1d495446ec7ace5b61da366ffb161ee8319dd9a2"}, {"url": "https://git.kernel.org/stable/c/721ad5b72448b5065ed309017ab563205f162404"}, {"url": "https://git.kernel.org/stable/c/538796b807fcfb81b2ce40cc97a614fd8588feb5"}], "title": "PCI: Check ROM header and data structure addr before accessing", "x_generator": {"engine": "bippy-1.2.0"}}}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/pci/rom.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "cd5b242d5848369b9e957340a7e30adee7b6763d", "status": "affected", "version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "versionType": "git"}, {"lessThan": "4997873e3abbad47a9e1e4abd05f045f77a74f22", "status": "affected", "version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "versionType": "git"}, {"lessThan": "724042f8f98d2594b9d164549fd4292c6bd58120", "status": "affected", "version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "versionType": "git"}, {"lessThan": "1d495446ec7ace5b61da366ffb161ee8319dd9a2", "status": "affected", "version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "versionType": "git"}, {"lessThan": "721ad5b72448b5065ed309017ab563205f162404", "status": "affected", "version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "versionType": "git"}, {"lessThan": "538796b807fcfb81b2ce40cc97a614fd8588feb5", "status": "affected", "version": "47b975d234eac39f3a72e5496d5f6158d8b806d1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/pci/rom.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.5"}, {"lessThan": "4.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Check ROM header and data structure addr before accessing\n\nWe meet a crash when running stress-ng on x86_64 machine:\n\n BUG: unable to handle page fault for address: ffa0000007f40000\n RIP: 0010:pci_get_rom_size+0x52/0x220\n Call Trace:\n <TASK>\n pci_map_rom+0x80/0x130\n pci_read_rom+0x4b/0xe0\n kernfs_file_read_iter+0x96/0x180\n vfs_read+0x1b1/0x300\n\nOur analysis reveals that the ROM space's start address is\n0xffa0000007f30000, and size is 0x10000. Because of broken ROM space,\nbefore calling readl(pds), the pds's value is 0xffa0000007f3ffff, which is\nalready pointed to the ROM space end, invoking readl() would read 4 bytes\ntherefore cause an out-of-bounds access and trigger a crash. Fix this by\nadding image header and data structure checking.\n\nWe also found another crash on arm64 machine:\n\n Unable to handle kernel paging request at virtual address ffff8000dd1393ff\n Mem abort info:\n ESR = 0x0000000096000021\n EC = 0x25: DABT (current EL), IL = 32 bits\n SET = 0, FnV = 0\n EA = 0, S1PTW = 0\n FSC = 0x21: alignment fault\n\nThe call trace is the same with x86_64, but the crash reason is that the\ndata structure addr is not aligned with 4, and arm64 machine report\n\"alignment fault\". Fix this by adding alignment checking.\n\n[bhelgaas: shorten function names, wrap comments]"}], "id": "CVE-2026-72487", "lastModified": "2026-08-15T06:22:22.973", "metrics": {}, "published": "2026-08-15T06:22:22.973", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1d495446ec7ace5b61da366ffb161ee8319dd9a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4997873e3abbad47a9e1e4abd05f045f77a74f22"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/538796b807fcfb81b2ce40cc97a614fd8588feb5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/721ad5b72448b5065ed309017ab563205f162404"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/724042f8f98d2594b9d164549fd4292c6bd58120"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cd5b242d5848369b9e957340a7e30adee7b6763d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

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