What’s Vulnerable › Vulnerabilities

CVE-2022-4378

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-01-05 · updated 2026-06-17
• Weakness: CWE-131

Description

A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Affected products

• Linux kernel: from 4.9.0 through 4.9.337; from 4.14.0 through 4.14.302; from 4.19.0 through 4.19.269; from 5.4.0 through 5.4.228; from 5.10.0 through 5.10.162; from 5.15.0 through 5.15.86

References

• http://packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092-1.html
• https://bugzilla.redhat.com/show_bug.cgi?id=2152548
• 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-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch
• https://seclists.org/oss-sec/2022/q4/178
• http://packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092-1.html
• https://bugzilla.redhat.com/show_bug.cgi?id=2152548
• 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-proc_skip_spaces-shouldn-t-think-it-is-working-on-c-strings.patch
• https://seclists.org/oss-sec/2022/q4/178

Get alerted when CVE-2022-4378 or the next vulnerability affects your stack