VulnerabilityModified
CVE-2023-3812
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.
HIGH 7.8EPSS 0.34%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.34% probability · 28th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787, CWE-416
- Affected
- linux/linux kernel · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2023:6799Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:6813Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7370Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7379Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7382Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7389Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7411Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7418Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7548Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7549Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7554Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2024:0340
- https://access.redhat.com/errata/RHSA-2024:0378
- https://access.redhat.com/errata/RHSA-2024:0412
- https://access.redhat.com/errata/RHSA-2024:0461
- https://access.redhat.com/errata/RHSA-2024:0554
- https://access.redhat.com/errata/RHSA-2024:0562
- https://access.redhat.com/errata/RHSA-2024:0563
- https://access.redhat.com/errata/RHSA-2024:0575
- https://access.redhat.com/errata/RHSA-2024:0593
- https://access.redhat.com/errata/RHSA-2024:1961
- https://access.redhat.com/errata/RHSA-2024:2006
- https://access.redhat.com/errata/RHSA-2024:2008
- https://access.redhat.com/security/cve/CVE-2023-3812Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2224048Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=363a5328f4b0Patch
- https://access.redhat.com/errata/RHSA-2023:6799Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:6813Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7370Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:7379Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.