What is CVE-2026-31514?

CVE-2026-31514 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.12.75 onward and patched in 6.12.80, 6.18.21 and 6.19.11. CVE-2026-31514 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-31514?

CVE-2026-31514 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-31514?

Yes, CVE-2026-31514 has been patched. Fixed versions include 6.12.80, 6.18.21 and 6.19.11. If you are running Linux kernel 6.12.75 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-31514 actively exploited?

CVE-2026-31514 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-31514

Medium

In the Linux kernel, the following vulnerability has been resolved: erofs: set fileio bio failed in short read case For file-backed mount, IO requests are handled by vfs_iocb_iter_read(). However, it can be interrupted by SIGKILL, returning the number of bytes actually copied. Unused folios in bio are unexpectedly marked as uptodate. vfs_read filemap_read filemap_get_pages filemap_readahead erofs_fileio_readahead erofs_fileio_rq_submit vfs_iocb_iter_read filemap_read filemap_get_pages <= detect signal erofs_fileio_ki_complete <= set all folios uptodate This patch addresses this by setting short read bio with an error directly.

Package Linux Kernel

Published 2026-04-22

Last modified 2026-04-28

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 6.12.75, 6.18.14, 6.19.4 and later are affected. Fixed in 6.12.80, 6.18.21, 6.19.11 and their respective stable series.

Affected from

≥ 6.12.75 ≥ 6.18.14 ≥ 6.19.4

Fixed in

✓ 6.12.80 6.12.x ✓ 6.18.21 6.18.x ✓ 6.19.11 6.19.x

References

4 total

Kernel Git
https://git.kernel.org/stable/c/5a5f23ef5431639db1ac3a0b274aef3a84cc413c

Patch
Kernel Git
https://git.kernel.org/stable/c/5cf3972c8221abdb1b464a14ccf8103d840b9085

Patch
Kernel Git
https://git.kernel.org/stable/c/d1ba7d6b3cd1757b108d7b6856c92ae661d6c323

Patch
Kernel Git
https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3c

Patch

Details

CVE ID CVE-2026-31514

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-04-22

Modified 2026-04-28

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-31514?

CVE-2026-31514 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.12.75 onward and has been patched in 6.12.80, 6.18.21 and 6.19.11. CVE-2026-31514 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-31514?

CVE-2026-31514 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-31514?

Yes. CVE-2026-31514 has been patched. Fixed versions include 6.12.80, 6.18.21 and 6.19.11. If you are running Linux kernel 6.12.75 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-31514 actively exploited?

No. CVE-2026-31514 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.