Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: x86/lam: Disable ADDRESS_MASKING in most cases Linear Address Masking (LAM) has a weakness related to transient execution as described in the SLAM paper[1]. Unless Linear Address Space Separation (LASS) is enabled this weakness may be exploitable. Until kernel adds support for LASS[2], only allow LAM for COMPILE_TEST, or when speculation mitigations have been disabled at compile time, otherwise keep LAM disabled. There are no processors in market that support LAM yet, so currently nobody is affected by this issue. [1] SLAM: https://download.vusec.net/papers/slam_sp24.pdf [2] LASS: https://lore.kernel.org/lkml/20230609183632.48706-1-alexander.shishkin@linux.intel.com/ [ dhansen: update SPECULATION_MITIGATIONS -> CPU_MITIGATIONS ]
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6449dcb0cac738219d13c618af7fd8664735f99d before 60a5ba560f296ad8da153f6ad3f70030bfa3958f; affected 6449dcb0cac738219d13c618af7fd8664735f99d before 690599066488d16db96ac0d6340f9372fc56f337; affected 6449dcb0cac738219d13c618af7fd8664735f99d before 3267cb6d3a174ff83d6287dcd5b0047bbd912452 |
| Linux / Linux | affected 6.4; unaffected 0 before 6.4; unaffected 6.6.59 through 6.6.*; unaffected 6.11.6 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/60a5ba560f296ad8da153f6ad3f70030bfa3958f
- https://git.kernel.org/stable/c/690599066488d16db96ac0d6340f9372fc56f337
- https://git.kernel.org/stable/c/3267cb6d3a174ff83d6287dcd5b0047bbd912452
ADP enrichment
No English description supplied.
No references supplied.