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NVD / CVE Program· CNA Linux

CVE-2022-50499: media: dvb-core: Fix double free in dvb_register_device()

Noroxi assessment

Priority: Monitor (action score 31/100)

  • 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).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 0588b12c418c3e4f927ced11f27b02ef4a5bfb07, 123eddf92a114e03919942641d2c2b1f4ca56ea6, 4.14.303.

Low priority for now. Upgrade to Linux Linux 0588b12c418c3e4f927ced11f27b02ef4a5bfb07, 123eddf92a114e03919942641d2c2b1f4ca56ea6, 4.14.303 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: dvb-core: Fix double free in dvb_register_device() In function dvb_register_device() -> dvb_register_media_device() -> dvb_create_media_entity(), dvb->entity is allocated and initialized. If the initialization fails, it frees the dvb->entity, and return an error code. The caller takes the error code and handles the error by calling dvb_media_device_free(), which unregisters the entity and frees the field again if it is not NULL. As dvb->entity may not NULLed in dvb_create_media_entity() when the allocation of dvbdev->pad fails, a double free may occur. This may also cause an Use After free in media_device_unregister_entity(). Fix this by storing NULL to dvb->entity when it is freed.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Oct 4, 2025
Updated
Jun 17, 2026
EPSS
0.1% · 5th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
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

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.9.195 and later · before 4.9.337
  • linux linux kernel4.14.147 and later · before 4.14.303
  • linux linux kernel4.19.77 and later · before 4.19.270
  • linux linux kernel5.2.19 and later · before 5.3
  • linux linux kernel5.3.4 and later · before 5.4.229
  • linux linux kernel5.5 and later · before 5.10.163
  • linux linux kernel5.11 and later · before 5.15.87
  • linux linux kernel5.16 and later · before 6.0.18
  • linux linux kernel6.1 and later · before 6.1.4

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

    • 8c17f6f5d0d6aab72a2af25c9911ac66e984be06, 202be5d6e46f682b9d1d79cd4dc6ab726e62ef1c, 5.4affected
    • 9db28659aa893c68f162b11fd63bb7f6a713e52f and later · before 0588b12c418c3e4f927ced11f27b02ef4a5bfb07affected · git
    • 1399a136127bfe1b9bb7c951d9851da62a519121 and later · before e9a78485b658361fab6a5547377be6c1af6f1b3daffected · git
    • 4df2427a5148093987437054bb82da4d014dcd59 and later · before 70bc51303871159796b55ba1a8f16637b46c2511affected · git
    • fcd5ce4b3936242e6679875a4d3c3acfc8743e15 and later · before b21f62b49ee9c3e0216d685d9cfd6003e5727271affected · git
    • fcd5ce4b3936242e6679875a4d3c3acfc8743e15 and later · before 7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8affected · git
    • fcd5ce4b3936242e6679875a4d3c3acfc8743e15 and later · before acf984a3718c2458eb9e08b6714490a04f213c58affected · git
    • fcd5ce4b3936242e6679875a4d3c3acfc8743e15 and later · before 772892b29ac50c2c5e918fc80104aa6ede81d837affected · git
    • fcd5ce4b3936242e6679875a4d3c3acfc8743e15 and later · before 123eddf92a114e03919942641d2c2b1f4ca56ea6affected · git
    • fcd5ce4b3936242e6679875a4d3c3acfc8743e15 and later · before 6b0d0477fce747d4137aa65856318b55fba72198affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-50497Oct 4, 2025 · binfmt_misc: fix shift-out-of-bounds in check_special_flags
    28Monitor
  • ← EarlierCVE-2022-50498Oct 4, 2025 · eth: alx: take rtnl_lock on resume
    22Monitor
  • Later →CVE-2022-50500Oct 4, 2025 · netdevsim: fix memory leak in nsim_drv_probe() when nsim_dev_resources_register() failed
    22Monitor

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 Linux0588b12c418c3e4f927ced11f27b02ef4a5bfb07Vendor (CNA)
Linux Linux123eddf92a114e03919942641d2c2b1f4ca56ea6Vendor (CNA)
Linux Linux4.14.303Vendor (CNA)
Linux Linux4.19.270Vendor (CNA)
Linux Linux4.9.337Vendor (CNA)
Linux Linux5.3Vendor (CNA)
Linux Linux5.4Vendor (CNA)
Linux Linux6b0d0477fce747d4137aa65856318b55fba72198Vendor (CNA)
Linux Linux70bc51303871159796b55ba1a8f16637b46c2511Vendor (CNA)
Linux Linux772892b29ac50c2c5e918fc80104aa6ede81d837Vendor (CNA)
Linux Linux7dd5a68cdbbbe7fc67ba701cb52ba10d8ba149f8Vendor (CNA)
Linux Linuxacf984a3718c2458eb9e08b6714490a04f213c58Vendor (CNA)
Linux Linuxb21f62b49ee9c3e0216d685d9cfd6003e5727271Vendor (CNA)
Linux Linuxe9a78485b658361fab6a5547377be6c1af6f1b3dVendor (CNA)
debian:linux6.1.4-1 · 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.

No history yet (it accumulates with the daily EPSS job).

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.

  • CVE-2026-31608202 days apartsmb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()
    39Monitor
  • CVE-2026-31609202 days apartsmb: client: avoid double-free in smbd_free_send_io() after smbd_send_batch_flush()
    39Monitor
  • CVE-2026-43011209 days apartnet/x25: Fix potential double free of skb
    39Monitor
  • CVE-2026-43414216 days apartscsi: qla2xxx: Completely fix fcport double free
    39Monitor
  • CVE-2026-52993263 days aparttipc: fix double-free in tipc_buf_append()
    39Monitor
  • CVE-2026-63888288 days apartscsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd()
    39Monitor

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

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-415 · Double Free

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

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 (8 more)

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

All records