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NVD / CVE Program· CNA Linux

CVE-2026-72179: riscv: cacheinfo: Fix node reference leak in populate_cache_leaves

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: 0.21% (FIRST EPSS).
  • Fixed version: Linux Linux 2560c97f63bb99b26d9f19b23a4f66ea24c9dc14, 36e4843fe39ea2f17f4de6d59fba26271916c184, 51afb7da697b698996351740b4f39fb05ce2afd4.

Low priority for now. Upgrade to Linux Linux 2560c97f63bb99b26d9f19b23a4f66ea24c9dc14, 36e4843fe39ea2f17f4de6d59fba26271916c184, 51afb7da697b698996351740b4f39fb05ce2afd4 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: riscv: cacheinfo: Fix node reference leak in populate_cache_leaves Currently, the while loop drops the reference to prev in each iteration. If the loop terminates early due to a break, the final of_node_put(np) correctly drops the reference to the current node. However, if the loop terminates naturally because np == NULL, calling of_node_put(np) is a no-op. This leaves the last valid node stored in prev without its reference dropped, resulting in a node reference leak. Fix this by changing the final `of_node_put(np)` to `of_node_put(prev)`.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 17, 2026
EPSS
0.2% · 11th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

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Affected 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

    • 5.0affected
    • 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f and later · before 2560c97f63bb99b26d9f19b23a4f66ea24c9dc14affected · git
    • 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f and later · before 51afb7da697b698996351740b4f39fb05ce2afd4affected · git
    • 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f and later · before 880ac50b0bfae06d7ab5f1843253adfb86aa173aaffected · git
    • 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f and later · before f322955d9a1c344ed943752f05aacea7bc22e025affected · git
    • 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f and later · before 36e4843fe39ea2f17f4de6d59fba26271916c184affected · git
    • 94f9bf118f1e294b3f2092f8bde02860f5e3ea3f and later · before bf4a195f063b0a0805c1417f6aad1dd32ea48f0faffected · git
    • before 5.0not affected · semver
    • 6.1.178 and later · up to and including 6.1.*not affected · semver
    • 6.6.145 and later · up to and including 6.6.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-72176Aug 15, 2026 · mm/damon/sysfs-schemes: put stats for scheme_add_dirs() internal error
    0Monitor
  • ← EarlierCVE-2026-72178Aug 15, 2026 · mm/damon/core: always put unsuccessfully committed target pids
    0Monitor
  • Later →CVE-2026-72180Aug 15, 2026 · mm/huge_memory: preserve pmd_swp_uffd_wp on device-private PMD downgrade
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2560c97f63bb99b26d9f19b23a4f66ea24c9dc14Vendor (CNA)
Linux Linux36e4843fe39ea2f17f4de6d59fba26271916c184Vendor (CNA)
Linux Linux51afb7da697b698996351740b4f39fb05ce2afd4Vendor (CNA)
Linux Linux880ac50b0bfae06d7ab5f1843253adfb86aa173aVendor (CNA)
Linux Linuxbf4a195f063b0a0805c1417f6aad1dd32ea48f0fVendor (CNA)
Linux Linuxf322955d9a1c344ed943752f05aacea7bc22e025Vendor (CNA)
debian:linux6.1.180-1 · Debian:12Package 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.

EPSS, last 120 days

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 researchers

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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).

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

  1. Fix✗ → ✓

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References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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