CVE-2026-43171
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-06
Modified: 2026-11-11
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
In the Linux kernel, the following vulnerability has been resolved: EFI/CPER: don't dump the entire memory region The current logic at cper_print_fw_err() doesn't check if the error record length is big enough to handle offset. On a bad firmware, if the ofset is above the actual record, length -= offset will underflow, making it dump the entire memory. The end result can be: - the logic taking a lot of time dumping large regions of memory; - data disclosure due to the memory dumps; - an OOPS, if it tries to dump an unmapped memory region. Fix it by checking if the section length is too small before doing a hex dump. [ rjw: Subject tweaks ]
Weakness Classification (1)
Affected Software (12)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 3d8c11efd528d56972d44ed0de51c4e11a9a4fa9 < 02de64ab54b4bb0f1b21bb324aeff3b08612be33 |
| Linux | Linux | 3d8c11efd528d56972d44ed0de51c4e11a9a4fa9 < 0e09b522f2622841389c3b2f9ac4969e35c0809d |
| Linux | Linux | 3d8c11efd528d56972d44ed0de51c4e11a9a4fa9 < 64ae5aaa7ac93c83da456039e8ec747bfa8a7cff |
| Linux | Linux | 3d8c11efd528d56972d44ed0de51c4e11a9a4fa9 < 5a9b1dda8481b82851a655c3bcc5b44879b95334 |
| Linux | Linux | 3d8c11efd528d56972d44ed0de51c4e11a9a4fa9 < 7780c0bad2a3a70a8c0113a33c02f4151d901eb3 |
| Linux | Linux | 3d8c11efd528d56972d44ed0de51c4e11a9a4fa9 < a8419f5f2c5f2d80848ddabb2b95cf0da84a5f91 |
| Linux | Linux | 3d8c11efd528d56972d44ed0de51c4e11a9a4fa9 < 54e131db4cdffd946db890ff33ff2647053fd4f6 |
| Linux | Linux | 3d8c11efd528d56972d44ed0de51c4e11a9a4fa9 < 55cc6fe5716f678f06bcb95140882dfa684464ec |
| Linux | Linux | 5.7 |
| linux | linux_kernel | 5.7 – 5.10.252 |
| linux | linux_kernel | 5.7 |
| linux | linux_kernel | 5.7 |