VulnerabilityModified
CVE-2023-39191
An improper input validation flaw was found in the eBPF subsystem in the Linux kernel.
HIGH 8.2EPSS 0.52%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel.
- CVSS 3.1
- 8.2 HIGHCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.52% probability · 43th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- linux/linux kernel · fedoraproject/fedora · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2023:6583Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0381Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0439Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0448Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-39191Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2226783Issue Tracking, Patch, Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/Patch, Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2023:6583Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0381Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0439Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0448Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-39191Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2226783Issue Tracking, Patch, Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/Patch, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.