CVE-2026-23156
Published: February 19, 2026Last modified: February 20, 2026
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().
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.163-r0) |
| 25 LTS | linux-lts | Fixed (6.12.73-r0) | |
| Stream | linux-lts | Fixed (6.12.71-r0) |
References
- https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42
- https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995
- https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8
- https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8
- https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16