Title: Linux Kernel 'tty_fasync()' Race Condition Null Pointer Dereference Vulnerability
Severity: HIGH
Description:
The Linux kernel is prone to a null-pointer dereference vulnerability. Specifically, this issue is caused by a race condition affecting the 'tty_fasync()' function.
An attacker can exploit this issue to crash the affected system. Due to the nature of the issue, code execution is possible; however, this has not been confirmed.
Affected Products:
- Linux kernel 2.6.21
- Linux kernel 2.6.21 .1
- Linux kernel 2.6.21 4
- Linux kernel 2.6.21-RC3
- Linux kernel 2.6.21-RC4
- Linux kernel 2.6.21-RC5
- Linux kernel 2.6.21-RC6
- Linux kernel 2.6.21-git8
- Linux kernel 2.6.21.2
- Linux kernel 2.6.21.3
- Linux kernel 2.6.21.6
- Linux kernel 2.6.21.7
- Linux kernel 2.6.22
- Linux kernel 2.6.22-rc1
- Linux kernel 2.6.22-rc7
- Linux kernel 2.6.22.1
- Linux kernel 2.6.22.11
- Linux kernel 2.6.22.12
- Linux kernel 2.6.22.13
- Linux kernel 2.6.22.14
- Linux kernel 2.6.22.15
- Linux kernel 2.6.22.16
- Linux kernel 2.6.22.17
- Linux kernel 2.6.22.2
- Linux kernel 2.6.22.3
- Linux kernel 2.6.22.4
- Linux kernel 2.6.22.5
- Linux kernel 2.6.22.6
- Linux kernel 2.6.22.7
- Linux kernel 2.6.22.8
- Linux kernel 2.6.23
- Linux kernel 2.6.23-rc1
- Linux kernel 2.6.23-rc2
- Linux kernel 2.6.23.09
- Linux kernel 2.6.23.1
- Linux kernel 2.6.23.10
- Linux kernel 2.6.23.14
- Linux kernel 2.6.23.2
- Linux kernel 2.6.23.3
- Linux kernel 2.6.23.4
- Linux kernel 2.6.23.5
- Linux kernel 2.6.23.6
- Linux kernel 2.6.23.7
- Linux kernel 2.6.24
- Linux kernel 2.6.24-git13
- Linux kernel 2.6.24-rc1
- Linux kernel 2.6.24-rc2
- Linux kernel 2.6.24-rc3
- Linux kernel 2.6.24-rc4
- Linux kernel 2.6.24-rc5
- Linux kernel 2.6.24.1
- Linux kernel 2.6.24.2
- Linux kernel 2.6.24.6
- Linux kernel 2.6.25
- Linux kernel 2.6.25 .15
- Linux kernel 2.6.25 19
- Linux kernel 2.6.25-rc1
- Linux kernel 2.6.25.1
- Linux kernel 2.6.25.10
- Linux kernel 2.6.25.11
- Linux kernel 2.6.25.12
- Linux kernel 2.6.25.13
- Linux kernel 2.6.25.2
- Linux kernel 2.6.25.3
- Linux kernel 2.6.25.4
- Linux kernel 2.6.25.5
- Linux kernel 2.6.25.6
- Linux kernel 2.6.25.7
- Linux kernel 2.6.25.8
- Linux kernel 2.6.25.9
- Linux kernel 2.6.26
- Linux kernel 2.6.26 -rc6
- Linux kernel 2.6.26 7
- Linux kernel 2.6.26-rc5-git1
- Linux kernel 2.6.26.1
- Linux kernel 2.6.26.3
- Linux kernel 2.6.26.4
- Linux kernel 2.6.26.5
- Linux kernel 2.6.26.6
- Linux kernel 2.6.27
- Linux kernel 2.6.27 -rc6-git6
- Linux kernel 2.6.27 -rc8
- Linux kernel 2.6.27 -rc8-git5
- Linux kernel 2.6.27 .5
- Linux kernel 2.6.27 12
- Linux kernel 2.6.27 3
- Linux kernel 2.6.27 6
- Linux kernel 2.6.27-git3
- Linux kernel 2.6.27-rc1
- Linux kernel 2.6.27-rc2
- Linux kernel 2.6.27-rc4
- Linux kernel 2.6.27-rc5
- Linux kernel 2.6.27-rc6
- Linux kernel 2.6.27.12
- Linux kernel 2.6.27.13
- Linux kernel 2.6.27.14
- Linux kernel 2.6.27.24
- Linux kernel 2.6.3
- Linux kernel 2.6.30
- Linux kernel 2.6.30 -rc1
- Linux kernel 2.6.30-rc2
- Linux kernel 2.6.30-rc3
- Linux kernel 2.6.30-rc5
- Linux kernel 2.6.30-rc6
- Linux kernel 2.6.30.1
- Linux kernel 2.6.30.10
- Linux kernel 2.6.30.3
- Linux kernel 2.6.30.4
- Linux kernel 2.6.30.5
- Linux kernel 2.6.31
- Linux kernel 2.6.31-git11
- Linux kernel 2.6.31-rc1
- Linux kernel 2.6.31-rc2
- Linux kernel 2.6.31-rc3
- Linux kernel 2.6.31-rc4
- Linux kernel 2.6.31-rc5-git3
- Linux kernel 2.6.31-rc6
- Linux kernel 2.6.31-rc7
- Linux kernel 2.6.31-rc8
- Linux kernel 2.6.31-rc9
- Linux kernel 2.6.31.1
- Linux kernel 2.6.31.11
- Linux kernel 2.6.31.2
- Linux kernel 2.6.31.4
- Linux kernel 2.6.31.5
- Linux kernel 2.6.31.6
- Linux kernel 2.6.32
- Linux kernel 2.6.32-rc1
- Linux kernel 2.6.32-rc2
- Linux kernel 2.6.32-rc3
- Linux kernel 2.6.32-rc4
- Linux kernel 2.6.32-rc5
- Linux kernel 2.6.32-rc7
- Linux kernel 2.6.32-rc8
- Linux kernel 2.6.32.11
- Linux kernel 2.6.32.12
- Linux kernel 2.6.32.3
- Linux kernel 2.6.32.4
- Linux kernel 2.6.32.7
- Linux kernel 2.6.32.8
- Linux kernel 2.6.33
- Linux kernel 2.6.33-rc4
- Linux kernel 2.6.33-rc5
- Linux kernel 2.6.33-rc6
- Linux kernel 2.6.33-rc6-git5
- Linux kernel 2.6.33-rc7
- Trustix Secure Enterprise Linux 2.0.0
- Trustix Secure Linux 2.0.0
- Trustix Secure Linux 2.1.0
- Trustix Secure Linux 2.2.0
References:
- Kyle Bader: Bug 14605 - NULL Pointer Dereference drivers/char/n_tty.c
- Linus Torvalds: Fix race in tty_fasync() properly
- dann frazier: CVE Request - kernel: put_tty_queue NULL pointer deref
- kernel.org: Linux kernel Homepage
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