lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 11 Dec 2019 14:01:47 +0100
From:   Daniel Borkmann <>
To:     Toke Høiland-Jørgensen <>
Cc:     Alexei Starovoitov <>,
        lkml <>,,, Martin Lau <>
Subject: Re: [PATCH bpf v2] bpftool: Don't crash on missing jited insns or

On Tue, Dec 10, 2019 at 07:14:12PM +0100, Toke Høiland-Jørgensen wrote:
> When the kptr_restrict sysctl is set, the kernel can fail to return
> jited_ksyms or jited_prog_insns, but still have positive values in
> nr_jited_ksyms and jited_prog_len. This causes bpftool to crash when trying
> to dump the program because it only checks the len fields not the actual
> pointers to the instructions and ksyms.
> Fix this by adding the missing checks.
> Signed-off-by: Toke Høiland-Jørgensen <>

Applied, thanks!

Powered by blists - more mailing lists