CVE-2026-72487High· 7.7▾ TwilightIn 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 addres…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.4 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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]
Linux >= 47b975d234eac39f3a72e5496d5f6158d8b806d1 < cd5b242d5848369b9e957340a7e30adee7b6763dLinux >= 47b975d234eac39f3a72e5496d5f6158d8b806d1 < 4997873e3abbad47a9e1e4abd05f045f77a74f22Linux >= 47b975d234eac39f3a72e5496d5f6158d8b806d1 < 724042f8f98d2594b9d164549fd4292c6bd58120Linux >= 47b975d234eac39f3a72e5496d5f6158d8b806d1 < 1d495446ec7ace5b61da366ffb161ee8319dd9a2Linux >= 47b975d234eac39f3a72e5496d5f6158d8b806d1 < 721ad5b72448b5065ed309017ab563205f162404Linux >= 47b975d234eac39f3a72e5496d5f6158d8b806d1 < 538796b807fcfb81b2ce40cc97a614fd8588feb5Linux 4.5Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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