CVE-2026-98016: net/mlx5e: Fix use-after-free race in sample_restore_put()
Noroxi assessment
Priority: Monitor (action score 0/100)
- 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: 0.17% (FIRST EPSS).
- Fixed version: Linux Linux 1daecd76ab9e5f055fe3970462410ad1d40bd177, 308e1cbb0d9712081f90860fe839ccb47bc196ee, 3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 1daecd76ab9e5f055fe3970462410ad1d40bd177, 308e1cbb0d9712081f90860fe839ccb47bc196ee, 3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 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: net/mlx5e: Fix use-after-free race in sample_restore_put() Concurrent teardown of TC sample rules sharing the same restore context may re-read restore->count after dropping restore_lock. At that point another thread may already have completed cleanup and freed the restore object. Use the result of the refcount decrement while holding restore_lock to determine whether cleanup is needed.
- Published
- Sep 25, 2026
- Updated
- Oct 19, 2026
- EPSS
- 0.1% · 6th percentile
- CWE
- —
Report tools
Action score
0
Monitor
Low priority for now.
- CVSS
- 0 / 40 · —
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
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.
Is your version affected? Check itNoroxi 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.
—
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
- 5.13affected
- 36a3196256bf3310e5e7142b0e61787f7a201abd and later · before cdf920e44cbbee1900c66f002fb50afee20977d4affected · git
- 36a3196256bf3310e5e7142b0e61787f7a201abd and later · before 308e1cbb0d9712081f90860fe839ccb47bc196eeaffected · git
- 36a3196256bf3310e5e7142b0e61787f7a201abd and later · before 8267e46d14e847e80e0aebe366d348e8a484a619affected · git
- 36a3196256bf3310e5e7142b0e61787f7a201abd and later · before 3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79aaffected · git
- 36a3196256bf3310e5e7142b0e61787f7a201abd and later · before 72324da8eeca269db9196c2a555abf72eb0385c5affected · git
- 36a3196256bf3310e5e7142b0e61787f7a201abd and later · before 1daecd76ab9e5f055fe3970462410ad1d40bd177affected · git
- 36a3196256bf3310e5e7142b0e61787f7a201abd and later · before af3aef0245abbab5e9f6302e7a7d6407187afb71affected · git
- before 5.13not affected · semver
- 5.15.222 and later · up to and including 5.15.*not 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:12 | linux | before 6.1.190-1 | 6.1.190-1 |
| Debian:12 | linux-6.12 | before 6.12.111-1~deb12u1 | 6.12.111-1~deb12u1 |
| Debian:13 | linux | before 6.12.111-1 | 6.12.111-1 |
| Debian:14 | linux | before 7.2.7-1 | 7.2.7-1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-64kb | before 5.14.21-150400.24.246.1 | 5.14.21-150400.24.246.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-docs | before 5.14.21-150400.24.246.1 | 5.14.21-150400.24.246.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-obs-build | before 5.14.21-150400.24.246.1 | 5.14.21-150400.24.246.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-syms | before 5.14.21-150400.24.246.1 | 5.14.21-150400.24.246.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-64kb | before 5.14.21-150500.55.195.1 | 5.14.21-150500.55.195.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-docs | before 5.14.21-150500.55.195.1 | 5.14.21-150500.55.195.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-obs-build | before 5.14.21-150500.55.195.1 | 5.14.21-150500.55.195.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-syms | before 5.14.21-150500.55.195.1 | 5.14.21-150500.55.195.1 |
| SUSE:Linux Enterprise Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_61 | before 1-150400.9.3.1 | 1-150400.9.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_47 | before 1-150500.11.3.1 | 1-150500.11.3.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-default | before 6.4.0-150600.23.143.1 | 6.4.0-150600.23.143.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_33 | before 1-150600.13.5.1 | 1-150600.13.5.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-default | before 5.14.21-150400.24.246.1 | 5.14.21-150400.24.246.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-default-base | before 5.14.21-150400.24.246.1.150400.24.124.1 | 5.14.21-150400.24.246.1.150400.24.124.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-source | before 5.14.21-150400.24.246.1 | 5.14.21-150400.24.246.1 |
| SUSE:Linux Enterprise Micro 5.4 | kernel-rt | before 5.14.21-150400.15.192.2 | 5.14.21-150400.15.192.2 |
| SUSE:Linux Enterprise Micro 5.4 | kernel-source-rt | before 5.14.21-150400.15.192.2 | 5.14.21-150400.15.192.2 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default | before 5.14.21-150500.55.195.1 | 5.14.21-150500.55.195.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default-base | before 5.14.21-150500.55.195.1.150500.6.91.1 | 5.14.21-150500.55.195.1.150500.6.91.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-rt | before 5.14.21-150500.13.167.2 | 5.14.21-150500.13.167.2 |
+11
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
Published before and after this one in the same product
- ← EarlierCVE-2026-98014Sep 25, 2026 · net/mlx5: E-Switch, prevent mc_list repopulation during vport disable0Monitor
- ← EarlierCVE-2026-98015Sep 25, 2026 · net/mlx5: E-Switch: fix use-after-free in mlx5_eswitch_termtbl_put0Monitor
- Later →CVE-2026-98017Sep 25, 2026 · net/sched: defer qdisc freeing after failed creation31Monitor
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 | 1daecd76ab9e5f055fe3970462410ad1d40bd177 | Vendor (CNA) |
| Linux Linux | 308e1cbb0d9712081f90860fe839ccb47bc196ee | Vendor (CNA) |
| Linux Linux | 3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a | Vendor (CNA) |
| Linux Linux | 72324da8eeca269db9196c2a555abf72eb0385c5 | Vendor (CNA) |
| Linux Linux | 8267e46d14e847e80e0aebe366d348e8a484a619 | Vendor (CNA) |
| Linux Linux | af3aef0245abbab5e9f6302e7a7d6407187afb71 | Vendor (CNA) |
| Linux Linux | cdf920e44cbbee1900c66f002fb50afee20977d4 | Vendor (CNA) |
| azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 | 6.6.158.1-1 · Release Notes | Microsoft (MSRC) |
| debian:linux | 6.1.190-1 · Debian:12 | Package registry (OSV) |
| debian:linux | 6.12.111-1 · Debian:13 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.111-1~deb12u1 · Debian:12 | Package registry (OSV) |
| suse:kernel-64kb | 6.4.0-150600.23.143.1 · SUSE:Linux Enterprise Server 15 SP6-LTSS | Package registry (OSV) |
| suse:kernel-default | 6.4.0-150600.23.143.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
| suse:kernel-default-base | 6.4.0-150600.23.143.1.150600.12.66.3 · SUSE:Linux Enterprise Server 15 SP6-LTSS | Package registry (OSV) |
| suse:kernel-docs | 6.4.0-150600.23.143.1 · SUSE:Linux Enterprise Server 15 SP6-LTSS | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP4_Update_61 | 1-150400.9.3.1 · SUSE:Linux Enterprise Live Patching 15 SP4 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_47 | 1-150500.11.3.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP6_Update_33 | 1-150600.13.5.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
| suse:kernel-obs-build | 6.4.0-150600.23.143.1 · SUSE:Linux Enterprise Server 15 SP6-LTSS | Package registry (OSV) |
| suse:kernel-rt | 5.14.21-150500.13.167.2 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:kernel-source | 6.4.0-150600.23.143.1 · SUSE:Linux Enterprise Server 15 SP6-LTSS | Package registry (OSV) |
| suse:kernel-syms | 6.4.0-150600.23.143.1 · SUSE:Linux Enterprise Server 15 SP6-LTSS | Package registry (OSV) |
| suse:kernel-zfcpdump | 6.4.0-150600.23.143.1 · SUSE:Linux Enterprise Server 15 SP6-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.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
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.
No nightly-computed relations.
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).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-1184 · Sep 28, 2026(Linux Kernel Güvenlik Bildirimi)
Technical details
No CVSS vector for this record, so attack conditions can't be derived.
Weakness class (CWE)
—
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 (6 more)Show less
- git.kernel.org/stable/c/308e1cbb0d9712081f90860fe839ccb47bc196ee
- git.kernel.org/stable/c/3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a
- git.kernel.org/stable/c/72324da8eeca269db9196c2a555abf72eb0385c5
- git.kernel.org/stable/c/8267e46d14e847e80e0aebe366d348e8a484a619
- git.kernel.org/stable/c/af3aef0245abbab5e9f6302e7a7d6407187afb71
- git.kernel.org/stable/c/cdf920e44cbbee1900c66f002fb50afee20977d4
Vendor advisories and official records. Exploit/PoC links are deliberately left out.