CVE-2024-0193

Kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation

MEDIUM
6.7
CVSS Score
Published: January 2, 2024 at 06:05 PM UTC
Updated: June 17, 2026 at 06:52 AM UTC
23 products affected across 2 vendorsLinux KernelEnterprise LinuxEnterprise Linux Server Aus

Using N/A by N/A?

Get instant alerts when new vulnerabilities affect N/A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.7
Exploit prediction
EPSS 0.8%
SSVC
PoC

Description

A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.10.198 ≤ v < 5.10.2065.15.118 ≤ v < 5.15.1466.1.35 ≤ v < 6.1.716.3.9 ≤ v < 6.6.10
Affected range stops below 5.10.206, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.15.146, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.71, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.6.10, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 0:5.14.0-284.55.1.el9_2 (unaffected)
Vendor states this is fixed in 0:5.14.0-284.55.1.rt14.340.el9_2 (unaffected)
Vendor states this is fixed in 0:5.14.0-362.24.1.el9_3 (unaffected)
Vendor states this is fixed in 0:5.14.0-70.105.1.el9_0 (unaffected)
Vendor states this is fixed in 0:5.14.0-70.105.1.rt21.177.el9_0 (unaffected)
Vendor states this is fixed in 6 (unaffected)
Vendor states this is fixed in 7 (unaffected)
Vendor states this is fixed in 8 (unaffected)

References (8)

VDB Entryx_refsource_REDHATMitigationThird Party Advisory
https://access.redhat.com/security/cve/CVE-2024-0193
Issue Trackingx_refsource_REDHATPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2255653

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-416

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card