KASAN: use-after-free Read in screen_glyph_unicode

[Wei CHEN]

Dear Linux kernel developers,

I found the crash “KASAN: use-after-free Read in screen_glyph_unicode” when running syzkaller, hope it’s unknown:

HEAD commit: 53faa9fe7 sys/freebsd: fix ipv6_packet name

Linux version: 1c163f4c7b3f v5.0

Branch: KASAN: use-after-free in screen_glyph drivers/tty/vt/vt.c:4566

Please find the attachment to get C repo and crash log generated by syzkaller, as well as the .config I used for linux kernel. Thanks. 

Thanks,

Wei

[Wei CHEN]

Dear Linux kernel developers,

I found the crash “KASAN: use-after-free Read in screen_glyph_unicode” when running syzkaller, hope it’s unknown:

Linux version: 1c163f4c7b3f Linux 5.0

Branch: KASAN: use-after-free in screen_glyph drivers/tty/vt/vt.c:4566

Please get C repo and crash log generated by syzkaller from google drive https://drive.google.com/drive/folders/1zolqAlgnweSbr2-OzFFH2Neot4RGMBiV?usp=sharing, as well as the .config I used for linux kernel from the attachment. Thanks.

Thanks,
Wei

[wch...@cse.ust.hk]

Dear Linux kernel developers,

I found the crash “KASAN: use-after-free Read in screen_glyph_unicode”
when running syzkaller, hope it’s unknown:

Linux version: 1c163f4c7b3f Linux 5.0
Branch: KASAN: use-after-free in screen_glyph drivers/tty/vt/vt.c:4566

Please get rhe C repo and crash log generated by syzkaller from google

[Dmitry Vyukov]

Hi Wei,

You should add relevant kernel maintainers to CC list when reporting
kernel bugs, nobody is generally reading LKML mailing list. Please
see:
https://github.com/google/syzkaller/blob/master/docs/linux/reporting_kernel_bugs.md
or any other kernel bug reporting guide.

> --
> You received this message because you are subscribed to the Google Groups "syzkaller" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller+...@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller/8645e64d639e9213bf68d0fdbee0c297.squirrel%40imail.cse.ust.hk.