high
7.8
CWE
119 787 131 120
Advisory Published
CVE Published
Updated

CVE-2022-4378: Buffer Overflow

First published: Mon Dec 12 2022(Updated: )

A flaw stack overflow in the Linux Kernel found. If user have access to SYSCTL (dynamically changing certain kernel parameters and variables), then can provide incorrect input to the function do_proc_dointvec leading to system crash or potentially privileges escalation. Known example of such incorrect input by local user for the /proc/sys/net/ipv4/tcp_rmem , but it could be other situations when this function being used. References: <a href="https://seclists.org/oss-sec/2022/q4/178">https://seclists.org/oss-sec/2022/q4/178</a> <a href="https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch">https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch</a> <a href="https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch">https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-6.0/proc-avoid-integer-type-confusion-in-get_proc_long.patch</a>

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel>=4.9.0<=4.9.337
Linux Linux kernel>=4.14.0<=4.14.302
Linux Linux kernel>=4.19.0<=4.19.269
Linux Linux kernel>=5.4.0<=5.4.228
Linux Linux kernel>=5.10.0<=5.10.162
Linux Linux kernel>=5.15.0<=5.15.86
Linux Linux kernel>=6.0.0<=6.0.11
redhat/kernel<6.0.12
6.0.12
IBM Security Guardium<=11.3
IBM Security Guardium<=11.4
IBM Security Guardium<=11.5
debian/linux
5.10.223-1
5.10.226-1
6.1.115-1
6.1.119-1
6.11.10-1
6.12.5-1

Remedy

https://git.kernel.org/linus/32927393dc1ccd60fb2bdc05b9e8e88753761469

Remedy

https://git.kernel.org/linus/bce9332220bd677d83b19d21502776ad555a0e73

Remedy

https://git.kernel.org/linus/e6cfaf34be9fcd1a8285a294e18986bfc41a409c

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