SB20260815243 - Out-of-bounds read in Linux kernel pci driver
Published: August 15, 2026
Security Bulletin ID
SB20260815243
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-72487)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in pci_get_rom_size in drivers/pci/rom.c when processing a broken PCI ROM image. A local user can provide a malformed ROM layout to trigger a kernel crash and cause a denial of service.
On some arm64 systems, exploitation may instead trigger an alignment fault due to unaligned IOMEM access.
Remediation
Install update from vendor's website.
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