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NVD / CVE Program· CNA Linux

CVE-2026-90029: usb: storage: realtek_cr: fix use-after-free on disconnect

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: 0.19% (FIRST EPSS).
  • Fixed version: Linux Linux 0935e57ede003bbe35de9c5d6a49260999ca0314, 4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc, 524d4257f741cd95eb85e2817c9c890928fcfef7.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0935e57ede003bbe35de9c5d6a49260999ca0314, 4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc, 524d4257f741cd95eb85e2817c9c890928fcfef7 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: usb: storage: realtek_cr: fix use-after-free on disconnect realtek_cr_destructor() calls timer_delete() before the chip containing the timer is freed. The timer callback may still be running and can rearm itself, resulting in a use-after-free. Use timer_shutdown_sync() to wait for the callback and prevent further rearming. Do this unconditionally because ss_en may be changed after the timer is armed. Move timer_setup() into init_realtek_cr() so the timer is initialized before any failure path can invoke the destructor. Found by static analysis.

—No exploit Fix available
Published
Sep 16, 2026
Updated
Oct 30, 2026
EPSS
0.1% · 9th 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%

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

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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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

    • 3.1affected
    • e931830bb877e2aad9a1be83506f9bdb26c91e4e and later · before f98c2f119fcd81cfede114d2fd3463a17aed8209affected · git
    • e931830bb877e2aad9a1be83506f9bdb26c91e4e and later · before 0935e57ede003bbe35de9c5d6a49260999ca0314affected · git
    • e931830bb877e2aad9a1be83506f9bdb26c91e4e and later · before c1e7e35100efffba7c9e1dfa76519d6cd323ba3daffected · git
    • e931830bb877e2aad9a1be83506f9bdb26c91e4e and later · before 524d4257f741cd95eb85e2817c9c890928fcfef7affected · git
    • e931830bb877e2aad9a1be83506f9bdb26c91e4e and later · before 7c4e2f964c65dea4ea22386799d5fb10ef1e3e54affected · git
    • e931830bb877e2aad9a1be83506f9bdb26c91e4e and later · before cae9dbba6adae21a04a3bd045e07b489847ff2c6affected · git
    • e931830bb877e2aad9a1be83506f9bdb26c91e4e and later · before 4ffee1aebb0c0ffcda9faffd17834ea9b00d42ccaffected · git
    • before 3.1not affected · semver
    • 5.15.224 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.

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.6-17.2.6-1

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-2026-90027Sep 16, 2026 · usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop
    31Monitor
  • ← EarlierCVE-2026-90028Sep 16, 2026 · usb: typec: hd3ss3220: track VBUS enable state per consumer
    0Monitor
  • Later →CVE-2026-90030Sep 16, 2026 · usb: dwc3: clear forceRM when issuing EndTransfer
    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 Linux0935e57ede003bbe35de9c5d6a49260999ca0314Vendor (CNA)
Linux Linux4ffee1aebb0c0ffcda9faffd17834ea9b00d42ccVendor (CNA)
Linux Linux524d4257f741cd95eb85e2817c9c890928fcfef7Vendor (CNA)
Linux Linux7c4e2f964c65dea4ea22386799d5fb10ef1e3e54Vendor (CNA)
Linux Linuxc1e7e35100efffba7c9e1dfa76519d6cd323ba3dVendor (CNA)
Linux Linuxcae9dbba6adae21a04a3bd045e07b489847ff2c6Vendor (CNA)
Linux Linuxf98c2f119fcd81cfede114d2fd3463a17aed8209Vendor (CNA)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux7.2.6-1 · Debian:14Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · 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

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

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

All records