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[CVE-2021-42008] Exploiting A 16-Year-Old Vulnerability In The Linux 6pack Driver

syst3mfailure.io · published 1 December 2021

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https://www.willsroot.io/2021/08/corctf-2021-fire-of-salvation-writeup.html
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[corCTF 2021] Wall Of Perdition: Utilizing msg_msg Objects For Arbitrary Read And Arbitrary Write In The Linux Kernel Read at the source ↗
syst3mfailure.io
https://docs.kernel.org/networking/6pack.html
docs.kernel.org
https://en.wikipedia.org/wiki/Terminal_node_controller
en.wikipedia.org
https://destevez.net/2016/06/kiss-hdlc-ax-25-and-friends/
destevez.net
https://www.linux-ax25.org/wiki/AX.25
linux-ax25.org
https://nanosatlab.upc.edu/en/missions-and-projects/3cat-2
nanosatlab.upc.edu
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
git.kernel.org
https://syzkaller.appspot.com/bug?id=1708e7a511059b09d2d4136150d3e67ff9dcf25f
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19d1532a187669ce86d5a2696eb7275310070793
git.kernel.org
https://elixir.bootlin.com/linux/v5.10-rc3/source/drivers/net/hamradio/6pack.c
elixir.bootlin.com
https://cdimage.debian.org/mirror/cdimage/archive/bullseye_di_rc3/amd64/iso-cd/debian-bullseye-DI-rc3-amd64-netinst.iso
cdimage.debian.org
https://en.wikipedia.org/wiki/Line_discipline
en.wikipedia.org
https://elixir.bootlin.com/linux/v5.10-rc3/source/include/uapi/linux/tty.h
elixir.bootlin.com
https://linux.die.net/man/4/ptmx
linux.die.net
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https://linux.die.net/man/7/pty
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https://www.linusakesson.net/programming/tty/index.php
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https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/netdevice.h
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https://elixir.bootlin.com/linux/v5.10-rc3/source/net/core/dev.c
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https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/jiffies.h
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https://cateee.net/lkddb/web-lkddb/HZ.html
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https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/msg.h
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https://linux.die.net/man/2/msgrcv
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https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/uaccess.h
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https://elixir.bootlin.com/linux/v5.10-rc3/source/ipc/msgutil.c
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https://www.kernel.org/doc/html/latest/admin-guide/mm/userfaultfd.html
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Linux Kernel Exploitation Technique: Overwriting modprobe_path Read at the source ↗
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https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/cred.h
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https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/slub_def.h
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https://linux.die.net/man/2/sched_setaffinity
linux.die.net
[CUCTF 2020] Hotrod: Exploiting timerfd_ctx Objects In The Linux Kernel Read at the source ↗
syst3mfailure.io
https://elixir.bootlin.com/linux/v5.10-rc3/source/ipc/shm.c
elixir.bootlin.com
https://linux.die.net/man/2/shmget
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https://linux.die.net/man/2/shmat
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https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/ipc_namespace.h
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https://linux.die.net/man/2/msgsnd
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https://elixir.bootlin.com/linux/v5.10-rc3/source/kernel/kmod.c
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elixir.bootlin.com
https://linux.die.net/man/3/getpwnam
linux.die.net
https://github.com/0xdevil/CVE-2021-42008
github.com
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cefdca0a86be
git.kernel.org
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d0d4730ac2e4
git.kernel.org
https://googleprojectzero.blogspot.com/2016/06/exploiting-recursion-in-linux-kernel_20.html
googleprojectzero.blogspot.com
https://twitter.com/tehjh/status/1438330352075001856
twitter.com
https://static.sched.com/hosted_files/lsseu2019/04/LSSEU2019%20-%20Exploiting%20race%20conditions%20on%20Linux.pdf
static.sched.com
https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/seq_file.h
elixir.bootlin.com
https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/umh.h
elixir.bootlin.com
https://elixir.bootlin.com/linux/v5.10-rc3/source/include/linux/tty.h
elixir.bootlin.com
https://google.github.io/security-research/pocs/linux/cve-2021-22555/writeup.html
google.github.io
About Read at the source ↗
syst3mfailure.io
https://cyberglory.wordpress.com/2011/08/21/jiffies-in-linux-kernel/
cyberglory.wordpress.com
https://bsauce.github.io/2021/09/26/kernel-exploit-%E6%9C%89%E7%94%A8%E7%9A%84%E7%BB%93%E6%9E%84%E4%BD%93/
bsauce.github.io