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NVD / CVE Program· CNA Linux

CVE-2026-68214: media: rtl2832: fix use-after-free in rtl2832_remove()

—No exploit Fix available

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: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 13c06056699e66ff7109ba68658cc6ea4a23f516, 1e8a6bc19403661661fed5ae82f6eca6c9cdfad2, 24bef237eef8dd1ebcffb129ba21891ddad0d309; azl3 kernel 6.6.143.1-1 on Azure Linux 3.0 6.6.150.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 13c06056699e66ff7109ba68658cc6ea4a23f516, 1e8a6bc19403661661fed5ae82f6eca6c9cdfad2, 24bef237eef8dd1ebcffb129ba21891ddad0d309; azl3 kernel 6.6.143.1-1 on Azure Linux 3.0 6.6.150.1-1 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: media: rtl2832: fix use-after-free in rtl2832_remove() cancel_delayed_work_sync() is called before i2c_mux_del_adapters() in rtl2832_remove(). While the cancel waits for any running instance of i2c_gate_work to finish, it does not prevent the timer from being rescheduled by a concurrent thread. During probe, the r820t_attach() call attempts I2C transfers through the mux adapter. These transfers go through i2c_mux_master_xfer(), which calls rtl2832_deselect() after the transfer completes, rescheduling i2c_gate_work via schedule_delayed_work(). If this transfer is still in flight when rtl2832_remove() runs, rtl2832_deselect() can reschedule i2c_gate_work after it has been cancelled, causing a use-after-free when kfree(dev) is called. Fix this by calling i2c_mux_del_adapters() before cancel_delayed_work_sync(). Once the mux adapter is unregistered, no new I2C transfers can go through it, so rtl2832_deselect() can no longer reschedule i2c_gate_work. The subsequent cancel_delayed_work_sync() is then guaranteed to be final.

Published
Aug 10, 2026
Updated
Nov 6, 2026
EPSS
0.2% · 12th 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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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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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

    • 4.7affected
    • cddcc40b1b1553010acb89add84c64b5d123ec94 and later · before 1e8a6bc19403661661fed5ae82f6eca6c9cdfad2affected · git
    • cddcc40b1b1553010acb89add84c64b5d123ec94 and later · before 68a9c0290897c1436ddceb8cea604c93377a0299affected · git
    • cddcc40b1b1553010acb89add84c64b5d123ec94 and later · before 13c06056699e66ff7109ba68658cc6ea4a23f516affected · git
    • cddcc40b1b1553010acb89add84c64b5d123ec94 and later · before 9acd5bbbe1df8e487e49488692c224496d4c9e16affected · git
    • cddcc40b1b1553010acb89add84c64b5d123ec94 and later · before 24bef237eef8dd1ebcffb129ba21891ddad0d309affected · git
    • cddcc40b1b1553010acb89add84c64b5d123ec94 and later · before 2c71bda6edc630a1f8c3c45d8df5fc22d234e042affected · git
    • cddcc40b1b1553010acb89add84c64b5d123ec94 and later · before 90d781711418881f8c836c2a859cc2886625d750affected · git
    • cddcc40b1b1553010acb89add84c64b5d123ec94 and later · before 680daf40a82d483949f87f0d8f98639dc47e610caffected · git
    • before 4.7not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.187-16.1.187-1
Debian:12linux-6.12before 6.12.101-1~deb12u16.12.101-1~deb12u1
Debian:13linuxbefore 6.12.101-16.12.101-1
Debian:14linuxbefore 7.1.6-17.1.6-1

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-2026-68212Aug 10, 2026 · media: saa7134: Fix a possible memory leak in saa7134_video_init1
    0Monitor
  • ← EarlierCVE-2026-68213Aug 10, 2026 · media: rtl2832_sdr: Return queued buffers on start_streaming() failure
    31Monitor
  • Later →CVE-2026-68216Aug 10, 2026 · media: pwc: Return queued buffers on start_streaming() failure
    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 Linux13c06056699e66ff7109ba68658cc6ea4a23f516Vendor (CNA)
Linux Linux1e8a6bc19403661661fed5ae82f6eca6c9cdfad2Vendor (CNA)
Linux Linux24bef237eef8dd1ebcffb129ba21891ddad0d309Vendor (CNA)
Linux Linux2c71bda6edc630a1f8c3c45d8df5fc22d234e042Vendor (CNA)
Linux Linux680daf40a82d483949f87f0d8f98639dc47e610cVendor (CNA)
Linux Linux68a9c0290897c1436ddceb8cea604c93377a0299Vendor (CNA)
Linux Linux90d781711418881f8c836c2a859cc2886625d750Vendor (CNA)
Linux Linux9acd5bbbe1df8e487e49488692c224496d4c9e16Vendor (CNA)
azl3 kernel 6.6.143.1-1 on Azure Linux 3.06.6.150.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.187-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.101-1~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).

National notice (Türkiye Cybersecurity Directorate / USOM)

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

All national notices →

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

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.

References

Show all references (7 more)

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

All records