fbcon: check return value of con2fb_acquire_newinfo()

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Summary

CVECVE-2026-43123
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-06 12:16:29 UTC
Updated2026-05-12 21:17:55 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: fbcon: check return value of con2fb_acquire_newinfo() If fbcon_open() fails when called from con2fb_acquire_newinfo() then info->fbcon_par pointer remains NULL which is later dereferenced. Add check for return value of the function con2fb_acquire_newinfo() to avoid it. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e d3e535533767c85788529e626478718b7e95a59f git Not specified
CNA Linux Linux affected d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e 3b5a754ec86bc6064af9aca76eb191c2405e6b0c git Not specified
CNA Linux Linux affected d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e a785c4e2a999c2d51dfcf40d317cfb30cc735d2c git Not specified
CNA Linux Linux affected d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e 0b038c0be6827dd2dbb1ce4f8d92d97c80cbe9cc git Not specified
CNA Linux Linux affected d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e 11a93180a70bb3095a9bd80d113d9277e30d9959 git Not specified
CNA Linux Linux affected d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e f57b61624c86ef8f87f6e6b7dd0755de03d90e89 git Not specified
CNA Linux Linux affected d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e 011a0502801c8536f64141a2b61362c14f456544 git Not specified
CNA Linux Linux affected 2.6.23 Not specified
CNA Linux Linux unaffected 2.6.23 semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.16 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.6 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/011a0502801c8536f64141a2b61362c14f456544 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f57b61624c86ef8f87f6e6b7dd0755de03d90e89 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a785c4e2a999c2d51dfcf40d317cfb30cc735d2c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0b038c0be6827dd2dbb1ce4f8d92d97c80cbe9cc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d3e535533767c85788529e626478718b7e95a59f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3b5a754ec86bc6064af9aca76eb191c2405e6b0c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/11a93180a70bb3095a9bd80d113d9277e30d9959 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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