Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: x86/bugs: Enable IBPB flush on BPF JIT allocation Enable hardening against JIT spraying when Spectre-v2 mitigations are in use. Specifically, issue an IBPB flush on BPF JIT memory reuse. Skip enabling the IBPB flush if the BPF dispatcher is already using a retpoline sequence. This hardening applies only when BPF-JIT is in use. Guard the enabling under CONFIG_BPF_JIT so that bugs.c still builds with CONFIG_BPF_JIT=n.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 57631054fae6dcc9c892ae6310b58bbb6f6e5048 before 25dbcd31781e2bc3cd63d873af1fcd06f863a126; affected 57631054fae6dcc9c892ae6310b58bbb6f6e5048 before cb27f3bf915cc0f20fc0c48da9059304e39ebd35; affected 57631054fae6dcc9c892ae6310b58bbb6f6e5048 before 9354248fc1c33a844ca1872761f6668b393e8c37; affected 57631054fae6dcc9c892ae6310b58bbb6f6e5048 before 8a4c8af9ae67eb072d90d1b339f14d27a82bd2a1; affected 57631054fae6dcc9c892ae6310b58bbb6f6e5048 before 52440e15d9628f8f239373c0f2e5e8f92feea2df; affected 57631054fae6dcc9c892ae6310b58bbb6f6e5048 before a3af84b0fa00ead01fcd0e28b5d773ff25990a0d |
| Linux / Linux | affected 5.18; unaffected 0 before 5.18; unaffected 6.1.183 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.39 through 6.18.*; unaffected 7.1.4 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/25dbcd31781e2bc3cd63d873af1fcd06f863a126
- https://git.kernel.org/stable/c/cb27f3bf915cc0f20fc0c48da9059304e39ebd35
- https://git.kernel.org/stable/c/9354248fc1c33a844ca1872761f6668b393e8c37
- https://git.kernel.org/stable/c/8a4c8af9ae67eb072d90d1b339f14d27a82bd2a1
- https://git.kernel.org/stable/c/52440e15d9628f8f239373c0f2e5e8f92feea2df
- https://git.kernel.org/stable/c/a3af84b0fa00ead01fcd0e28b5d773ff25990a0d