High severity · published Oct 4, 2023
CVE-2023-39191
An improper input validation flaw was found in the eBPF subsystem in the Linux kernel
8.2
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.19 before 6.3 · source: NVD
EL
Enterprise Linux · Redhat
9.0 · source: NVD
FE
Fedora · Fedoraproject
38 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-39191
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-39191
Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:6583
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0381
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0439
Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0448
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-39191
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2226783
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