Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — netfilter: nf_tables: adapt set backend to use GC transaction API
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0026 17.6 —
AFFECTED
Product Versions Fixed
Linux 9d0982927e79049675cb6c6c04a0ebb3dad5a434 – —
Linux 4.1 – 4.19.316
TIMELINE
Aug 21 Reserved by Linux
Jan 20 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2023-52923 (Linux). CVSS 7.8 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: adapt set backend to use GC transaction API
Use the GC transaction API to replace the old and buggy gc API and the
busy mark approach.
No set elements are removed from async garbage collection anymore,
instead the _DEAD bit is set on so the set element is not visible from
lookup path anymore. Async GC enqueues transaction work that might be
aborted and retried later.
rbtree and pipapo set backends does not set on the _DEAD bit from the
sync GC path since this runs in control plane path where mutex is held.
In this case, set elements are deactivated, removed and then released
via RCU callback, sync GC never fails.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| August 21, 2024 | Reserved | Reserved by Linux |
| January 20, 2025 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2023-52923 (Linux). CVSS 7.8 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 9d0982927e79049675cb6c6c04a0ebb3dad5a434 | — |
| Linux | Linux | — | 4.1 | 4.19.316 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-52923 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.