CVE-2023-52433: netfilter: nft_set_rbtree: skip sync GC for new elements in this transaction
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.26% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Linux Linux 03caf75da1059f0460666c826e9f50e13dfd0017, 2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4, 6.5.
Low priority for now. Upgrade to Linux Linux 03caf75da1059f0460666c826e9f50e13dfd0017, 2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4, 6.5 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_rbtree: skip sync GC for new elements in this transaction New elements in this transaction might expired before such transaction ends. Skip sync GC for such elements otherwise commit path might walk over an already released object. Once transaction is finished, async GC will collect such expired element.
- Published
- Feb 20, 2024
- Updated
- Aug 5, 2026
- EPSS
- 0.2% · 18th percentile
- CWE
- CWE-273
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 7.8
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| netapp | ontap tools | cpe:2.3:a:netapp:ontap_tools |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel6.5 and later · before 6.5.4
- netapp ontap tools10
- netapp ontap tools9
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- e4d71d6a9c7db93f7bf20c3a0f0659d63d7de681, 6.5affected
- cb4d00b563675ba8ff6ef94b077f58d816f68ba3 and later · before 9db9feb841f7449772f9393c16b9ef4536d8c127affected · git
- c357648929c8dff891502349769aafb8f0452bc2 and later · before 03caf75da1059f0460666c826e9f50e13dfd0017affected · git
- 146c76866795553dbc19998f36718d7986ad302b and later · before c323ed65f66e5387ee0a73452118d49f1dae81b8affected · git
- 479a2cf5259347d6a1f658b0f791d27a34908e91 and later · before 9af7dfb3c9d7985172a240f85e684c5cd33e29ceaffected · git
- df650d6a4bf47248261b61ef6b174d7c54034d15 and later · before 9a8c544158f68f656d1734eb5ba00c4f817b76b1affected · git
- f6c383b8c31a93752a52697f8430a71dcbc46adf and later · before e3213ff99a355cda811b41e8dbb3472d13167a3aaffected · git
- f6c383b8c31a93752a52697f8430a71dcbc46adf and later · before 2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4affected · git
- 6.4.11 and later · before 6.5affected · semver
- before 6.5not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:13 | linux | before 6.5.6-1 | 6.5.6-1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-64kb | before 5.14.21-150500.55.136.1 | 5.14.21-150500.55.136.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-docs | before 5.14.21-150500.55.136.1 | 5.14.21-150500.55.136.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-obs-build | before 5.14.21-150500.55.136.1 | 5.14.21-150500.55.136.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-syms | before 5.14.21-150500.55.136.1 | 5.14.21-150500.55.136.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_35 | before 1-150500.11.3.1 | 1-150500.11.3.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-rt | before 5.14.21-150400.15.145.1 | 5.14.21-150400.15.145.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-source-rt | before 5.14.21-150400.15.145.1 | 5.14.21-150400.15.145.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default | before 5.14.21-150500.55.136.1 | 5.14.21-150500.55.136.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default-base | before 5.14.21-150500.55.136.1.150500.6.67.1 | 5.14.21-150500.55.136.1.150500.6.67.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-rt | before 5.14.21-150500.13.121.1 | 5.14.21-150500.13.121.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-source | before 5.14.21-150500.55.136.1 | 5.14.21-150500.55.136.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-source-rt | before 5.14.21-150500.13.121.1 | 5.14.21-150500.13.121.1 |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | kernel-zfcpdump | before 5.14.21-150500.55.136.1 | 5.14.21-150500.55.136.1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
Published before and after this one in the same product
- ← EarlierCVE-2024-25739Feb 12, 2024 · create_empty_lvol in drivers/mtd/ubi/vtbl.c in the Linux kernel through 6.7.4 can attempt to allocate zero bytes, and crash, because of a mi22Monitor
- ← EarlierCVE-2024-21892Feb 19, 2024 · On Linux, Node.js ignores certain environment variables if those may have been set by an unprivileged user while the process is running with31Monitor
- Later →CVE-2024-26581Feb 20, 2024 · netfilter: nft_set_rbtree: skip end interval element from gc32Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 03caf75da1059f0460666c826e9f50e13dfd0017 | Vendor (CNA) |
| Linux Linux | 2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4 | Vendor (CNA) |
| Linux Linux | 6.5 | Vendor (CNA) |
| Linux Linux | 9a8c544158f68f656d1734eb5ba00c4f817b76b1 | Vendor (CNA) |
| Linux Linux | 9af7dfb3c9d7985172a240f85e684c5cd33e29ce | Vendor (CNA) |
| Linux Linux | 9db9feb841f7449772f9393c16b9ef4536d8c127 | Vendor (CNA) |
| Linux Linux | c323ed65f66e5387ee0a73452118d49f1dae81b8 | Vendor (CNA) |
| Linux Linux | e3213ff99a355cda811b41e8dbb3472d13167a3a | Vendor (CNA) |
| debian:linux | 6.5.6-1 · Debian:13 | Package registry (OSV) |
| suse:kernel-64kb | 5.14.21-150500.55.136.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:kernel-default | 5.14.21-150500.55.136.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-default-base | 5.14.21-150500.55.136.1.150500.6.67.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-docs | 5.14.21-150500.55.136.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_35 | 1-150500.11.3.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-obs-build | 5.14.21-150500.55.136.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:kernel-rt | 5.14.21-150500.13.121.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-source | 5.14.21-150500.55.136.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-source-rt | 5.14.21-150500.13.121.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-syms | 5.14.21-150500.55.136.1 · SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | Package registry (OSV) |
| suse:kernel-zfcpdump | 5.14.21-150500.55.136.1 · SUSE:Linux Enterprise Server 15 SP5-LTSS | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2021-4712924 days apartnetfilter: nft_ct: skip expectations for confirmed conntrack31Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-273 · Improper Check for Dropped PrivilegesCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- git.kernel.org/stable/c/03caf75da1059f0460666c826e9f50e13dfd0017
- git.kernel.org/stable/c/2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4
- git.kernel.org/stable/c/9a8c544158f68f656d1734eb5ba00c4f817b76b1
- git.kernel.org/stable/c/9db9feb841f7449772f9393c16b9ef4536d8c127
- git.kernel.org/stable/c/c323ed65f66e5387ee0a73452118d49f1dae81b8
- git.kernel.org/stable/c/e3213ff99a355cda811b41e8dbb3472d13167a3a
- security.netapp.com/advisory/ntap-20240828-0003/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.