CVE-2026-72487
PCI: Check ROM header and data structure addr before accessing
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]
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Check PCI ROM header and data structure address.
- Validate ROM data structure alignment before access.
- Apply vendor patches for the Linux kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72487.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72487 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72487
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72487 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72487 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': 'cd5b242d5848369b9e957340a7e30adee7b6763d', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '4997873e3abbad47a9e1e4abd05f045f77a74f22', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '724042f8f98d2594b9d164549fd4292c6bd58120', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '1d495446ec7ace5b61da366ffb161ee8319dd9a2', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '721ad5b72448b5065ed309017ab563205f162404', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '538796b807fcfb81b2ce40cc97a614fd8588feb5', 'versionType': 'git'}], 'programFiles': ['drivers/pci/rom.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/pci/rom.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': 'cd5b242d5848369b9e957340a7e30adee7b6763d', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '4997873e3abbad47a9e1e4abd05f045f77a74f22', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '724042f8f98d2594b9d164549fd4292c6bd58120', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '1d495446ec7ace5b61da366ffb161ee8319dd9a2', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '721ad5b72448b5065ed309017ab563205f162404', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '538796b807fcfb81b2ce40cc97a614fd8588feb5', 'versionType': 'git'}], 'programFiles': ['drivers/pci/rom.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/pci/rom.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': 'cd5b242d5848369b9e957340a7e30adee7b6763d', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '4997873e3abbad47a9e1e4abd05f045f77a74f22', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '724042f8f98d2594b9d164549fd4292c6bd58120', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '1d495446ec7ace5b61da366ffb161ee8319dd9a2', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '721ad5b72448b5065ed309017ab563205f162404', 'versionType': 'git'}, {'status': 'affected', 'version': '47b975d234eac39f3a72e5496d5f6158d8b806d1', 'lessThan': '538796b807fcfb81b2ce40cc97a614fd8588feb5', 'versionType': 'git'}], 'programFiles': ['drivers/pci/rom.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/pci/rom.c'], 'defaultStatus': 'affected'}] 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] Added Reference https://git.kernel.org/stable/c/1d495446ec7ace5b61da366ffb161ee8319dd9a2 Added Reference https://git.kernel.org/stable/c/4997873e3abbad47a9e1e4abd05f045f77a74f22 Added Reference https://git.kernel.org/stable/c/538796b807fcfb81b2ce40cc97a614fd8588feb5 Added Reference https://git.kernel.org/stable/c/721ad5b72448b5065ed309017ab563205f162404 Added Reference https://git.kernel.org/stable/c/724042f8f98d2594b9d164549fd4292c6bd58120 Added Reference https://git.kernel.org/stable/c/cd5b242d5848369b9e957340a7e30adee7b6763d