01 Record

CVE-2026-53402

fbdev: fbcon: fix out-of-bounds read in err_out of fbcon_do_set_font()

HighPUBLISHEDCNA: Linux

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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02 Description

fbdev: fbcon: fix out-of-bounds read in err_out of fbcon_do_set_font()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.17% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 6.4% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-07-19 12:02Z3 MO AGO

Last updated

2026-10-19 20:07Z9 DAYS AGO

Reserved

2026-06-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

4f68c5db39c5f0796891706267ada5a0f58e381c83f74acccef15c140489d3da

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux868749a7456dc48e93887a8474194e2ee6d6c21f to < cb016bcb40c81e7b19c4ae6143babb366dae8e20, ebd6f886aa2447fcfcdce5450c9e1028e1d681bb to < ac562193c36696513ae196171892e9338475c4bc, a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 to < 3618a4c5b2591cfa83efe74f5b18c2d02b35c3f5, a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 to < a7a526fbc847f07ad3a503c7382189be5ab68574, a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 to < b5bb2c696e140c399cb874def2feedf61dee27d6, a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 to < 076b1aa65f77a49bce5a48a4a55a397cfcafa2b8, a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 to < 39815715cbcfabb16fc8c5f4a23deeda20f5df62, a5a923038d70d2d4a86cb4e3f32625a5ee6e7e24 to < 8fdc8c2057eea08d40ce2c8eed41ff9e451c65c2, f08ccb792d3eaf1dc62d8cbf6a30d6522329f660, 5.10.249 to < 5.10.261, 5.15.64 to < 5.15.212, 5.19.6 to < 5.20, 6.0—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/cb016bcb40c81e7b19c4ae6143babb366dae8e20
git.kernel.orghttps://git.kernel.org/stable/c/ac562193c36696513ae196171892e9338475c4bc
git.kernel.orghttps://git.kernel.org/stable/c/3618a4c5b2591cfa83efe74f5b18c2d02b35c3f5
git.kernel.orghttps://git.kernel.org/stable/c/a7a526fbc847f07ad3a503c7382189be5ab68574
git.kernel.orghttps://git.kernel.org/stable/c/b5bb2c696e140c399cb874def2feedf61dee27d6
git.kernel.orghttps://git.kernel.org/stable/c/076b1aa65f77a49bce5a48a4a55a397cfcafa2b8
git.kernel.orghttps://git.kernel.org/stable/c/39815715cbcfabb16fc8c5f4a23deeda20f5df62
git.kernel.orghttps://git.kernel.org/stable/c/8fdc8c2057eea08d40ce2c8eed41ff9e451c65c2

07 Fixed in

Debian 12

linux
Fixed in 6.1.180-1
linux-6.12
Fixed in 6.12.100-1~deb12u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.96-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.1.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.