APPLIED [OEM-5.14] Re: [SRU OEM-5.10/OEM-5.14 0/1] CVE-2021-4002

[Timo Aaltonen]

On 29.11.2021 18.15, Thadeu Lima de Souza Cascardo wrote:
> https://www.openwall.com/lists/oss-security/2021/11/25/1
> 
> [Impact]
> Missing TLB flush on hugetlb unmapping may allow a different process to
> access another process memory, as long as it is using hugetlb mappings.
> 
> [Test case]
> POC from the link above was used to test it on amd64.
> 
> [Potential regression]
> hugetlb users may regress.
> 
> Nadav Amit (1):
>    hugetlbfs: flush TLBs correctly after huge_pmd_unshare
> 
>   mm/hugetlb.c | 23 +++++++++++++++++++----
>   1 file changed, 19 insertions(+), 4 deletions(-)
> 

applied to oem-5.14, thanks

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