Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: efivarfs: fix error propagation in efivar_entry_get() efivar_entry_get() always returns success even if the underlying __efivar_entry_get() fails, masking errors. This may result in uninitialized heap memory being copied to userspace in the efivarfs_file_read() path. Fix it by returning the error from __efivar_entry_get().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.0, < 6.1.162 |
References
- https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42Patch
- https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995Patch
- https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8Patch
- https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8Patch
- https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16Patch
FAQ
What is CVE-2026-23156?
CVE-2026-23156 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: efivarfs: fix error propagation in efivar_entry_get() efivar_entry_get() always returns success even if the underlying __efivar_en...
How severe is CVE-2026-23156?
CVE-2026-23156 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23156?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.