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CVE-2026-74352· NVD / CVE Program· CNA Linux

of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails

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: 0.16% (FIRST EPSS).
  • Fixed version: Linux Linux 6d28e6ad3c5c9248577f21057baa9bf16fa9ef3b, 9af58d10d0d8c08b822de5fc99e61f31a87ede8d, cbd3102fe27bc87da244bf4c3ba670ea4698b0a8.

Low priority for now. Upgrade to Linux Linux 6d28e6ad3c5c9248577f21057baa9bf16fa9ef3b, 9af58d10d0d8c08b822de5fc99e61f31a87ede8d, cbd3102fe27bc87da244bf4c3ba670ea4698b0a8 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: of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails The global pointer 'reserved_mem' continues to reference the reserved_mem_array which lives in __initdata if alloc_reserved_mem_array() fails. of_reserved_mem_lookup() is exported for post-init use, that would dereference freed memory and trigger a use-after-free. So reset reserved_mem_count to 0 when alloc_reserved_mem_array() fails.

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 17, 2026
EPSS
0.1% · 5th 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 · 0.1%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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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.

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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

    • 6.13affected
    • b6ae53301eb41f0f59f83c161248b186bca7da70 and later · before 6d28e6ad3c5c9248577f21057baa9bf16fa9ef3baffected · git
    • 00c9a452a235c61f099504783badd9a7675ff5a5 and later · before 9af58d10d0d8c08b822de5fc99e61f31a87ede8daffected · git
    • 00c9a452a235c61f099504783badd9a7675ff5a5 and later · before cbd3102fe27bc87da244bf4c3ba670ea4698b0a8affected · git
    • 00c9a452a235c61f099504783badd9a7675ff5a5 and later · before e1686ca81dbf3edbde589b7daf312b45cbf76e03affected · git
    • before 6.13not affected · semver
    • 6.18.40 and later · up to and including 6.18.*not 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-2026-74348Aug 15, 2026 · ocfs2/dlm: require a ref for locking_state debugfs open
    0Monitor
  • ← EarlierCVE-2026-74351Aug 15, 2026 · ocfs2: rebase copied fsdlm LVB pointers in locking_state
    0Monitor
  • Later →CVE-2026-74353Aug 15, 2026 · drm/amdkfd: always resume_all after suspend_all
    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 Linux6d28e6ad3c5c9248577f21057baa9bf16fa9ef3bVendor (CNA)
Linux Linux9af58d10d0d8c08b822de5fc99e61f31a87ede8dVendor (CNA)
Linux Linuxcbd3102fe27bc87da244bf4c3ba670ea4698b0a8Vendor (CNA)
Linux Linuxe1686ca81dbf3edbde589b7daf312b45cbf76e03Vendor (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.

All records