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NVD / CVE Program· CNA Linux

CVE-2022-49162: video: fbdev: sm712fb: Fix crash in smtcfb_write()

Noroxi assessment

Priority: Monitor (action score 22/100)

  • 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: 0.28% (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 0ec746674296c94137f074309c26d17e644c0498, 1aea36a62f0a0ad67eccc945bac0bd6422ef720f, 3b36c05f68ba32d0dfb63abc9016d6fe9117829f.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 0ec746674296c94137f074309c26d17e644c0498, 1aea36a62f0a0ad67eccc945bac0bd6422ef720f, 3b36c05f68ba32d0dfb63abc9016d6fe9117829f 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: video: fbdev: sm712fb: Fix crash in smtcfb_write() When the sm712fb driver writes three bytes to the framebuffer, the driver will crash: BUG: unable to handle page fault for address: ffffc90001ffffff RIP: 0010:smtcfb_write+0x454/0x5b0 Call Trace: vfs_write+0x291/0xd60 ? do_sys_openat2+0x27d/0x350 ? __fget_light+0x54/0x340 ksys_write+0xce/0x190 do_syscall_64+0x43/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae Fix it by removing the open-coded endianness fixup-code.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Feb 26, 2025
Updated
Aug 5, 2026
EPSS
0.2% · 21th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
5.5
CNA · Linux
7.8
2.3 point gap

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

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

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

Follow CVE-2022-49162

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 kernelbefore 4.9.311
  • linux linux kernel4.10 and later · before 4.14.276
  • linux linux kernel4.15 and later · before 4.19.238
  • linux linux kernel4.20 and later · before 5.4.189
  • linux linux kernel5.5 and later · before 5.10.110
  • linux linux kernel5.11 and later · before 5.15.33
  • linux linux kernel5.16 and later · before 5.16.19
  • linux linux kernel5.17 and later · before 5.17.2

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

    • 2.6.33affected
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before fb791514acf9070225eed46e1ccbb0aa7aae5da5affected · git
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before 0ec746674296c94137f074309c26d17e644c0498affected · git
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before 1aea36a62f0a0ad67eccc945bac0bd6422ef720faffected · git
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before 3b36c05f68ba32d0dfb63abc9016d6fe9117829faffected · git
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before b1c28577529cdfad40c8242673285f1e1e4c314eaffected · git
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before eae90015d10f0c9a47fc4adccba4cd79dce664e4affected · git
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before aeb635b49530b7d19e140949753409f759ba99beaffected · git
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before 809b8cde86320698661eec677222bc5c5df76176affected · git
    • d7edf47947f9d921be6ca5fc8e83049124466f98 and later · before 4f01d09b2bbfbcb47b3eb305560a7f4857a32260affected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 5.17.3-15.17.3-1

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-2022-49160Feb 26, 2025 · scsi: qla2xxx: Fix crash during module load unload test
    22Monitor
  • ← EarlierCVE-2022-49161Feb 26, 2025 · ASoC: mediatek: Fix error handling in mt8183_da7219_max98357_dev_probe
    22Monitor
  • Later →CVE-2022-49163Feb 26, 2025 · media: imx-jpeg: fix a bug of accessing array out of bounds
    28Monitor

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 Linux0ec746674296c94137f074309c26d17e644c0498Vendor (CNA)
Linux Linux1aea36a62f0a0ad67eccc945bac0bd6422ef720fVendor (CNA)
Linux Linux3b36c05f68ba32d0dfb63abc9016d6fe9117829fVendor (CNA)
Linux Linux4f01d09b2bbfbcb47b3eb305560a7f4857a32260Vendor (CNA)
Linux Linux809b8cde86320698661eec677222bc5c5df76176Vendor (CNA)
Linux Linuxaeb635b49530b7d19e140949753409f759ba99beVendor (CNA)
Linux Linuxb1c28577529cdfad40c8242673285f1e1e4c314eVendor (CNA)
Linux Linuxeae90015d10f0c9a47fc4adccba4cd79dce664e4Vendor (CNA)
Linux Linuxfb791514acf9070225eed46e1ccbb0aa7aae5da5Vendor (CNA)
debian:linux5.17.3-1 · 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.

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

Weakness class (CWE)

—

CVSS vector

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