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NVD / CVE Program· CNA Linux

CVE-2022-49948: vt: Clear selection before changing the font

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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: 0.27% (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 1cf1930369c9dc428d827b60260c53271bff3285, 2535431ae967ad17585513649625fea7db28d4db, 3.11.

Low priority for now. Upgrade to Linux Linux 1cf1930369c9dc428d827b60260c53271bff3285, 2535431ae967ad17585513649625fea7db28d4db, 3.11 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: vt: Clear selection before changing the font When changing the console font with ioctl(KDFONTOP) the new font size can be bigger than the previous font. A previous selection may thus now be outside of the new screen size and thus trigger out-of-bounds accesses to graphics memory if the selection is removed in vc_do_resize(). Prevent such out-of-memory accesses by dropping the selection before the various con_font_set() console handlers are called.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Jun 18, 2025
Updated
Oct 15, 2026
EPSS
0.2% · 19th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.1
CNA · Linux
7.8
0.7 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.

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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 kernelbefore 4.9.328
  • linux linux kernel4.10 and later · before 4.14.293
  • linux linux kernel4.15 and later · before 4.19.258
  • linux linux kernel4.20 and later · before 5.4.213
  • linux linux kernel5.5 and later · before 5.10.142
  • linux linux kernel5.11 and later · before 5.15.66
  • linux linux kernel5.16 and later · before 5.19.8
  • linux linux kernel6.0

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

    • e60f8fcce05042e8f8cea25ee81fecc1222114cf, 5812a9bc9d68a82c2cc839f88e6f7a05093ab39d, 863ad19fd654c485e3beec3575c4d74a1e74369e, dbc3fd44f957a39407e889287bf61fa0ef3ecc14, 0b2a0a58ad22f9d6dfc641bc5ec46057493f22a5, 9f2d48f0745f921040df91bfe8fa7f0339cd7497, 3425e397fb23cc2e8e6fb8f5b8226dcb447e84dd, eeae0a12a16650ff494d5faefa371cd9e7079575, 4.9affected
    • 009e39ae44f4191188aeb6dfbf661b771dbbe515 and later · before c555cf04684fde39b5b0dd9fd80730030ee10c4aaffected · git
    • 009e39ae44f4191188aeb6dfbf661b771dbbe515 and later · before e9ba4611ddf676194385506222cce7b0844e708eaffected · git
    • 009e39ae44f4191188aeb6dfbf661b771dbbe515 and later · before f74b4a41c5d7c9522469917e3072e55d435efd9eaffected · git
    • 009e39ae44f4191188aeb6dfbf661b771dbbe515 and later · before 1cf1930369c9dc428d827b60260c53271bff3285affected · git
    • 009e39ae44f4191188aeb6dfbf661b771dbbe515 and later · before 989201bb8c00b222235aff04e6200230d29dc7bbaffected · git
    • 009e39ae44f4191188aeb6dfbf661b771dbbe515 and later · before 2535431ae967ad17585513649625fea7db28d4dbaffected · git
    • 009e39ae44f4191188aeb6dfbf661b771dbbe515 and later · before c904fe03c4bd1f356a58797d39e2a5d0ca15cefcaffected · git
    • 009e39ae44f4191188aeb6dfbf661b771dbbe515 and later · before 566f9c9f89337792070b5a6062dff448b3e7977faffected · git
    • 3.2.85 and later · before 3.3affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.2-16.0.2-1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-64kbbefore 5.14.21-150400.24.170.25.14.21-150400.24.170.2
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-docsbefore 5.14.21-150400.24.170.15.14.21-150400.24.170.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-obs-buildbefore 5.14.21-150400.24.170.25.14.21-150400.24.170.2
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-sourcebefore 5.14.21-150400.24.170.15.14.21-150400.24.170.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSkernel-symsbefore 5.14.21-150400.24.170.15.14.21-150400.24.170.1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.269.14.12.14-122.269.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_71before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Live Patching 15 SP3kernel-defaultbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Live Patching 15 SP3kernel-livepatch-SLE15-SP3_Update_59before 1-150300.7.3.11-150300.7.3.1
SUSE:Linux Enterprise Micro 5.1kernel-rtbefore 5.3.18-150300.214.15.3.18-150300.214.1
SUSE:Linux Enterprise Micro 5.1kernel-source-rtbefore 5.3.18-150300.214.15.3.18-150300.214.1
SUSE:Linux Enterprise Micro 5.3kernel-defaultbefore 5.14.21-150400.24.170.25.14.21-150400.24.170.2
SUSE:Linux Enterprise Micro 5.3kernel-default-basebefore 5.14.21-150400.24.170.2.150400.24.86.25.14.21-150400.24.170.2.150400.24.86.2
SUSE:Linux Enterprise Micro 5.3kernel-rtbefore 5.14.21-150400.15.124.15.14.21-150400.15.124.1
SUSE:Linux Enterprise Micro 5.3kernel-source-rtbefore 5.14.21-150400.15.124.15.14.21-150400.15.124.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.269.14.12.14-122.269.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.269.14.12.14-122.269.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-64kbbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-default-basebefore 5.3.18-150300.59.211.1.150300.18.126.15.3.18-150300.59.211.1.150300.18.126.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-docsbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-obs-buildbefore 5.3.18-150300.59.212.15.3.18-150300.59.212.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-preemptbefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1
SUSE:Linux Enterprise Server 15 SP3-LTSSkernel-sourcebefore 5.3.18-150300.59.211.15.3.18-150300.59.211.1

+3

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-2025-38078Jun 18, 2025 · ALSA: pcm: Fix race of buffer access at PCM OSS layer
    18Monitor
  • ← EarlierCVE-2025-38081Jun 18, 2025 · spi-rockchip: Fix register out of bounds access
    28Monitor
  • Later →CVE-2022-49961Jun 18, 2025 · bpf: Do mark_chain_precision for ARG_CONST_ALLOC_SIZE_OR_ZERO
    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 Linux1cf1930369c9dc428d827b60260c53271bff3285Vendor (CNA)
Linux Linux2535431ae967ad17585513649625fea7db28d4dbVendor (CNA)
Linux Linux3.11Vendor (CNA)
Linux Linux3.13Vendor (CNA)
Linux Linux3.17Vendor (CNA)
Linux Linux3.19Vendor (CNA)
Linux Linux3.3Vendor (CNA)
Linux Linux4.2Vendor (CNA)
Linux Linux4.5Vendor (CNA)
Linux Linux4.9Vendor (CNA)
Linux Linux566f9c9f89337792070b5a6062dff448b3e7977fVendor (CNA)
Linux Linux989201bb8c00b222235aff04e6200230d29dc7bbVendor (CNA)
Linux Linuxc555cf04684fde39b5b0dd9fd80730030ee10c4aVendor (CNA)
Linux Linuxc904fe03c4bd1f356a58797d39e2a5d0ca15cefcVendor (CNA)
Linux Linuxe9ba4611ddf676194385506222cce7b0844e708eVendor (CNA)
Linux Linuxf74b4a41c5d7c9522469917e3072e55d435efd9eVendor (CNA)
debian:linux6.0.2-1 · Debian:12Package registry (OSV)
suse:kernel-64kb5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-default5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-default-base5.3.18-150300.59.211.1.150300.18.126.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-docs5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-livepatch-SLE15-SP3_Update_591-150300.7.3.1 · SUSE:Linux Enterprise Live Patching 15 SP3Package registry (OSV)
suse:kernel-obs-build5.3.18-150300.59.212.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-preempt5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-rt5.3.18-150300.214.1 · SUSE:Linux Enterprise Micro 5.1Package registry (OSV)
suse:kernel-source5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-source-rt5.3.18-150300.214.1 · SUSE:Linux Enterprise Micro 5.1Package registry (OSV)
suse:kernel-syms5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage registry (OSV)
suse:kernel-zfcpdump5.3.18-150300.59.211.1 · SUSE:Linux Enterprise Server 15 SP3-LTSSPackage 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
high · data can be read
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
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. 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