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NVD / CVE Program· CNA Linux

CVE-2022-50757: media: camss: Clean up received buffers on failed start of streaming

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: 0.20% (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 04c734c716a97f1493b1edac41316aaed1d2a9d9, 24df4fa3e795fb4b15fd4d3c036596e0978d265a, 3d5cab726e3b370fea1b6e67183f0e13c409ce5c.

Low priority for now. Upgrade to Linux Linux 04c734c716a97f1493b1edac41316aaed1d2a9d9, 24df4fa3e795fb4b15fd4d3c036596e0978d265a, 3d5cab726e3b370fea1b6e67183f0e13c409ce5c 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: camss: Clean up received buffers on failed start of streaming It is required to return the received buffers, if streaming can not be started. For instance media_pipeline_start() may fail with EPIPE, if a link validation between entities is not passed, and in such a case a user gets a kernel warning: WARNING: CPU: 1 PID: 520 at drivers/media/common/videobuf2/videobuf2-core.c:1592 vb2_start_streaming+0xec/0x160 <snip> Call trace: vb2_start_streaming+0xec/0x160 vb2_core_streamon+0x9c/0x1a0 vb2_ioctl_streamon+0x68/0xbc v4l_streamon+0x30/0x3c __video_do_ioctl+0x184/0x3e0 video_usercopy+0x37c/0x7b0 video_ioctl2+0x24/0x40 v4l2_ioctl+0x4c/0x70 The fix is to correct the error path in video_start_streaming() of camss.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Dec 24, 2025
Updated
Aug 5, 2026
EPSS
0.2% · 10th percentile
CWE
—

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 · 0.2%

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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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Follow CVE-2022-50757

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.

—

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

    • 4.14affected
    • 0ac2586c410fe00d58dd09bf270a22f25d5287b8 and later · before 75954cde8a5ca84003b24b6bf83197240935bd74affected · git
    • 0ac2586c410fe00d58dd09bf270a22f25d5287b8 and later · before 04c734c716a97f1493b1edac41316aaed1d2a9d9affected · git
    • 0ac2586c410fe00d58dd09bf270a22f25d5287b8 and later · before fe443b3fe36cd23d4f5dc6d825d34322e7c89f0caffected · git
    • 0ac2586c410fe00d58dd09bf270a22f25d5287b8 and later · before 3d5cab726e3b370fea1b6e67183f0e13c409ce5caffected · git
    • 0ac2586c410fe00d58dd09bf270a22f25d5287b8 and later · before d1c44928bb3ca0ec88e7ad5937a2a26a259aede6affected · git
    • 0ac2586c410fe00d58dd09bf270a22f25d5287b8 and later · before f05326a440dc31b91b688b2f3f15b7347894a50baffected · git
    • 0ac2586c410fe00d58dd09bf270a22f25d5287b8 and later · before 24df4fa3e795fb4b15fd4d3c036596e0978d265aaffected · git
    • 0ac2586c410fe00d58dd09bf270a22f25d5287b8 and later · before c8f3582345e6a69da65ab588f7c4c2d1685b0e80affected · git
    • before 4.14not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1

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-2022-50753Dec 24, 2025 · f2fs: fix to do sanity check on summary info
    31Monitor
  • ← EarlierCVE-2022-50754Dec 24, 2025 · apparmor: fix a memleak in multi_transaction_new()
    0Monitor
  • Later →CVE-2022-50758Dec 24, 2025 · staging: vt6655: fix potential memory leak
    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 Linux04c734c716a97f1493b1edac41316aaed1d2a9d9Vendor (CNA)
Linux Linux24df4fa3e795fb4b15fd4d3c036596e0978d265aVendor (CNA)
Linux Linux3d5cab726e3b370fea1b6e67183f0e13c409ce5cVendor (CNA)
Linux Linux75954cde8a5ca84003b24b6bf83197240935bd74Vendor (CNA)
Linux Linuxc8f3582345e6a69da65ab588f7c4c2d1685b0e80Vendor (CNA)
Linux Linuxd1c44928bb3ca0ec88e7ad5937a2a26a259aede6Vendor (CNA)
Linux Linuxf05326a440dc31b91b688b2f3f15b7347894a50bVendor (CNA)
Linux Linuxfe443b3fe36cd23d4f5dc6d825d34322e7c89f0cVendor (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.

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

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)

—

CVSS vector

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

nvd-secondary

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 (7 more)

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

All records