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NVD / CVE Program· CNA Linux

CVE-2026-72453: regcache: Do not overwrite error code when finalizing cache after error

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: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 9108f7fa493b4c88cbc09503e0c164244456bad5, 9f171aa115ec76be02c76c5765cd2c865279e34a, b454870bbdb3b34ffeaebf0d8e1726cc0aaa2de4.

Low priority for now. Upgrade to Linux Linux 9108f7fa493b4c88cbc09503e0c164244456bad5, 9f171aa115ec76be02c76c5765cd2c865279e34a, b454870bbdb3b34ffeaebf0d8e1726cc0aaa2de4 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: regcache: Do not overwrite error code when finalizing cache after error During regcache initialization, if an error occurs in the cache_ops->populate callback, and if cache operations include an exit callback, the error code from populate() is overwritten with the return value from exit(). This hides the error condition from the caller of regcache_init(), and can cause NULL pointer dereferences when the regcache is later accessed.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Oct 30, 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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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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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

    • 6.19affected
    • 5e43756123197e7bca4920a47d20d9eff0e203c3 and later · before b454870bbdb3b34ffeaebf0d8e1726cc0aaa2de4affected · git
    • b498b70a8174bcb4e801d4d794a49f2d143c5c9f and later · before bae057687f61580dd897411cd749da22a7740647affected · git
    • 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 and later · before 9f171aa115ec76be02c76c5765cd2c865279e34aaffected · git
    • 94a3a95f03154d8d4c6206950a7f6ef9a30baec6 and later · before 9108f7fa493b4c88cbc09503e0c164244456bad5affected · git
    • before 6.19not affected · semver
    • 7.1.5 and later · up to and including 7.1.*not affected · semver
    • 7.2 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
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-2026-72450Aug 15, 2026 · xfrm: validate selector family and prefixlen during match
    31Monitor
  • ← EarlierCVE-2026-72452Aug 15, 2026 · drm/i915: clear CRTC color blob pointers after dropping refs
    31Monitor
  • Later →CVE-2026-72454Aug 15, 2026 · i3c: mipi-i3c-hci: Fix race in i3c_hci_addr_to_dev()
    31Monitor

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 Linux9108f7fa493b4c88cbc09503e0c164244456bad5Vendor (CNA)
Linux Linux9f171aa115ec76be02c76c5765cd2c865279e34aVendor (CNA)
Linux Linuxb454870bbdb3b34ffeaebf0d8e1726cc0aaa2de4Vendor (CNA)
Linux Linuxbae057687f61580dd897411cd749da22a7740647Vendor (CNA)
debian:linux7.1.5-1 · Debian:14Package 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

Finders, 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).

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 (3 more)

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

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