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"product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-03-23T00:00:00Z"}, {"advisory": "RHSA-2023:3388", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "kernel-0:4.18.0-372.57.1.el8_6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-05-31T00:00:00Z"}, {"advisory": "RHSA-2023:3491", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "redhat-virtualization-host-0:4.5.3-202306050942_8.6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-06-06T00:00:00Z"}], "bugzilla": {"description": "kernel: stack overflow in do_proc_dointvec and proc_skip_spaces", "id": "2152548", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2152548"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-120->CWE-131->CWE-787", "details": ["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.", "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."], "mitigation": {"lang": "en:us", "value": "A possible workaround is preventing regular users from accessing sysctl files (such as /proc/sys/net/ipv4/tcp_rmem and similar). Also, preventing a user from increasing privileges with commands such as \"unshare -rn\" (that allows obtaining net namespace privileges required to access /proc/sys/net/ipv4/tcp_rmem)."}, "name": "CVE-2022-4378", "public_date": "2022-12-09T10:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-4378\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-4378\nhttps://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\nhttps://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\nhttps://seclists.org/oss-sec/2022/q4/178"], "statement": "To trigger this issue, the user needs some privileges (for example, access to the sysctl files), but usually less than root or CAP_NET_ADMIN.", "threat_severity": "Important", "upstream_fix": "kernel 6.0.12"}