Kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.3%
exploitation probability
0.3%top 75% of all CVEs
observed exploitation
nono source reports it
An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat · Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat · Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat · Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat · Red Hat Enterprise Linux 8.6 Extended Update SupportRed Hat · Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat · Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat · Red Hat Virtualization 4 for Red Hat Enterprise Linux 8References
https://access.redhat.com/errata/RHSA-2023:6799https://access.redhat.com/errata/RHSA-2023:6813https://access.redhat.com/errata/RHSA-2023:7370https://access.redhat.com/errata/RHSA-2023:7379https://access.redhat.com/errata/RHSA-2023:7382https://access.redhat.com/errata/RHSA-2023:7389https://access.redhat.com/errata/RHSA-2023:7411https://access.redhat.com/errata/RHSA-2023:7418https://access.redhat.com/errata/RHSA-2023:7548https://access.redhat.com/errata/RHSA-2023:7549https://access.redhat.com/errata/RHSA-2023:7554https://access.redhat.com/errata/RHSA-2024:0340