Re: [PATCH bpf v7 0/2] Fix bpf_probe_read_user_str() overcopying

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hello:

This series was applied to bpf/bpf.git (refs/heads/master):

On Tue, 17 Nov 2020 12:05:44 -0800 you wrote:
> 6ae08ae3dea2 ("bpf: Add probe_read_{user, kernel} and probe_read_{user,
> kernel}_str helpers") introduced a subtle bug where
> bpf_probe_read_user_str() would potentially copy a few extra bytes after
> the NUL terminator.
> 
> This issue is particularly nefarious when strings are used as map keys,
> as seemingly identical strings can occupy multiple entries in a map.
> 
> [...]

Here is the summary with links:
  - [bpf,v7,1/2] lib/strncpy_from_user.c: Don't overcopy bytes after NUL terminator
    https://git.kernel.org/bpf/bpf/c/33b97ea52713
  - [bpf,v7,2/2] selftest/bpf: Test bpf_probe_read_user_str() strips trailing bytes after NUL
    https://git.kernel.org/bpf/bpf/c/a8005439fc81

You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html





[Index of Archives]     [Linux Samsung SoC]     [Linux Rockchip SoC]     [Linux Actions SoC]     [Linux for Synopsys ARC Processors]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]


  Powered by Linux