CVE-2026-23156
N/A
N/A
Summary
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().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2d82e6227ea189c0589e7383a36616ac2a2d248c < 3960f1754664661a970dc9ebbab44ff93a0b4c42 | affected |
| Linux | Linux | 2d82e6227ea189c0589e7383a36616ac2a2d248c < 510a16f1c5c1690b33504052bc13fbc2772c23f8 | affected |
| Linux | Linux | 2d82e6227ea189c0589e7383a36616ac2a2d248c < 89b8ca709eeeabcc11ebba64806677873a2787a8 | affected |
| Linux | Linux | 2d82e6227ea189c0589e7383a36616ac2a2d248c < e4e15a0a4403c96d9898d8398f0640421df9cb16 | affected |
| Linux | Linux | 2d82e6227ea189c0589e7383a36616ac2a2d248c < 4b22ec1685ce1fc0d862dcda3225d852fb107995 | affected |
| Linux | Linux | 6.0 | affected |
| Linux | Linux | 0 < 6.0 | unaffected |
| Linux | Linux | 6.1.162 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.123 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.69 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.9 <= 6.18.* | unaffected |
| Linux | Linux | 6.19 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42
- https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8
- https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8
- https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16
- https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995
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