In the Linux kernel, the following vulnerability has been resolved:
hugetlbfs: don't delete error page from pagecache
This change is very similar to the change that was made for shmem [1], and
it solves the same problem but for HugeTLBFS instead.
Currently, when poison is found in a HugeTLB page, the page is removed
from the page cache. That means that attempting to map or read that
hugepage in the future will result in a new hugepage being allocated
instead of notifying the user that the page was poisoned. As [1] states,
this is effectively memory corruption.
The fix is to leave the page in the page cache. If the user attempts to
use a poisoned HugeTLB page with a syscall, the syscall will fail with
EIO, the same error code that shmem uses. For attempts to map the page,
the thread will get a BUS_MCEERR_AR SIGBUS.
[1]: commit a76054266661 ("mm: shmem: don't truncate page if memory failure happens")
References
Configurations
Configuration 1 (hide)
|
History
10 Nov 2025, 20:10
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-401 | |
| References | () https://git.kernel.org/stable/c/30571f28bb35c826219971c63bcf60d2517112ed - Patch | |
| References | () https://git.kernel.org/stable/c/8625147cafaa9ba74713d682f5185eb62cb2aedb - Patch | |
| References | () https://git.kernel.org/stable/c/ec667443b2dbc6cdbbac4073e51a17733158ec6a - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
Information
Published : 2025-05-01 15:16
Updated : 2025-11-10 20:10
NVD link : CVE-2022-49828
Mitre link : CVE-2022-49828
CVE.ORG link : CVE-2022-49828
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-401
Missing Release of Memory after Effective Lifetime