Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: x86/speculation: Fill RSB on vmexit for IBRS Prevent RSB underflow/poisoning attacks with RSB. While at it, add a bunch of comments to attempt to document the current state of tribal knowledge about RSB attacks and what exactly is being mitigated.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected b9cdaaf0a3becc52e8b4662fef28c452c4f009b4 before 3d323b99ff5c8c57005184056d65f6af5b0479d8; affected 117cc7a908c83697b0b737d15ae1eb5943afe35b before f744b88dfc201bf8092833ec70b23c720188b527; affected 117cc7a908c83697b0b737d15ae1eb5943afe35b before 17a9fc4a7b91f8599223631bb6ae6416bc0de1c0; affected 117cc7a908c83697b0b737d15ae1eb5943afe35b before 4d7f72b6e1bc630bec7e4cd51814bc2b092bf153; affected 117cc7a908c83697b0b737d15ae1eb5943afe35b before 8d5cff499a6d740c91ff37963907e0e983c37f0f; affected 117cc7a908c83697b0b737d15ae1eb5943afe35b before 8c38306e2e9257af4af2819aa287a4711ff36329; affected 117cc7a908c83697b0b737d15ae1eb5943afe35b before 9756bba28470722dacb79ffce554336dd1f6a6cd; affected 68d1f7a3f1a35639a563bbad768d5df885b4ff05; affected 20e080e2752d108388d386ecc0b33d7797dfb18f; affected eebc3f8adee0a6f43a4789ef0bf5c5b35de8cfe4; affected c1ddd99a029636e234a800f28790a60d6ac0318f; affected 4.14.14 before 4.14.297; affected 3.2.101 before 3.3; affected 3.16.56 before 3.17; affected 4.4.113 before 4.5; affected 4.9.77 before 4.10 |
| Linux / Linux | affected 4.15; unaffected 0 before 4.15; unaffected 4.14.297 through 4.14.*; unaffected 4.19.266 through 4.19.*; unaffected 5.4.217 through 5.4.*; unaffected 5.10.133 through 5.10.*; unaffected 5.15.57 through 5.15.*; unaffected 5.18.14 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3d323b99ff5c8c57005184056d65f6af5b0479d8
- https://git.kernel.org/stable/c/f744b88dfc201bf8092833ec70b23c720188b527
- https://git.kernel.org/stable/c/17a9fc4a7b91f8599223631bb6ae6416bc0de1c0
- https://git.kernel.org/stable/c/4d7f72b6e1bc630bec7e4cd51814bc2b092bf153
- https://git.kernel.org/stable/c/8d5cff499a6d740c91ff37963907e0e983c37f0f
- https://git.kernel.org/stable/c/8c38306e2e9257af4af2819aa287a4711ff36329
- https://git.kernel.org/stable/c/9756bba28470722dacb79ffce554336dd1f6a6cd