mbox series

[SRU,F,0/1] CVE-2024-42240

Message ID 20241017205815.482327-1-yuxuan.luo@canonical.com
Headers show
Series CVE-2024-42240 | expand

Message

Yuxuan Luo Oct. 17, 2024, 8:58 p.m. UTC 
[Impact]
When BHI mitigation is enabled, debug handler issues a warning that
could have been avoided under certain circumstance.

[Backport]
Solved the context conflict due to missing UNTRAIN_RET macro in our
trees.

[Test]
No more debugger warnings after the patch.

[Where problems could occur]
CPU single-step debugging and BHI mitigation might be affected.

Alexandre Chartre (1):
  x86/bhi: Avoid warning in #DB handler due to BHI mitigation

 arch/x86/entry/entry_64_compat.S | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

Comments

Manuel Diewald Oct. 18, 2024, 8:10 a.m. UTC | #1 
On Thu, Oct 17, 2024 at 04:58:06PM -0400, Yuxuan Luo wrote:
> [Impact]
> When BHI mitigation is enabled, debug handler issues a warning that
> could have been avoided under certain circumstance.
> 
> [Backport]
> Solved the context conflict due to missing UNTRAIN_RET macro in our
> trees.
> 
> [Test]
> No more debugger warnings after the patch.
> 
> [Where problems could occur]
> CPU single-step debugging and BHI mitigation might be affected.
> 
> Alexandre Chartre (1):
>   x86/bhi: Avoid warning in #DB handler due to BHI mitigation
> 
>  arch/x86/entry/entry_64_compat.S | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)
> 
> -- 
> 2.43.0
> 
> 
> -- 
> kernel-team mailing list
> kernel-team@lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team

Acked-by: Manuel Diewald <manuel.diewald@canonical.com>