CVE-2024-0193: Kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation
Vulnerability summary
CVE-2024-0193 is a high (CVSS 7.8) Use After Free vulnerability in linux linux_kernel. EPSS estimates a 0.84% chance of exploitation in the next 30 days, higher than 57.7% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 17 · Duplicates 1 · Related 14Timeline
- 02-01-2024PublishedVulnerability first disclosed.
- 04-03-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
- OSV · DebianEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
- OSV · ChainguardEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
- NVDNIST6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.84%
Chance of exploitation in the next 30 days
Percentile
58%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 0.84% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu101 products
- linux< 5.15.0-92.102
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1052.57
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Chainguard39 products
- hyperv-daemons-generic< 6.16.6-r0
- linux-aws-6.12All versions (No fix recorded)
- linux-aws-6.18< 6.18.0-r0
- linux-aws-generic< 6.16.6-r0
- linux-aws-generic-boot-installed< 6.16.6-r0
Redhat21 products
- codeready_linux_builder9.0
- codeready_linux_builder_for_eus9.2 | 9.4 | 9.6
- codeready_linux_builder_for_ibm_z_systems9.0_s390x
- codeready_linux_builder_for_ibm_z_systems_eus9.2_s390x | 9.4_s390x | 9.6_s390x
- codeready_linux_builder_for_power_little_endian9.0_ppc64le
Debian1 product
- linux< 6.1.69-1 | < 6.6.11-1
Linux1 product
- linux_kernel≥ 5.10.198, < 5.10.206 | ≥ 5.15.118, < 5.15.146 | ≥ 6.1.35, < 6.1.71 | ≥ 6.3.9, < 6.6.10
5 vendors · 163 products
References
22 links- access.redhat.com/security/cve/CVE-2024-0193VDB EntryX Refsource REDHATREPORTAdvisoryMitigationThird Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2255653Issue TrackingX Refsource REDHATFIXPatchThird Party Advisory
- git.kernel.org/pub/…REPORT
