Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-31463

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
22/04/2026
Last modified:
07/05/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> iomap: fix invalid folio access when i_blkbits differs from I/O granularity<br /> <br /> Commit aa35dd5cbc06 ("iomap: fix invalid folio access after<br /> folio_end_read()") partially addressed invalid folio access for folios<br /> without an ifs attached, but it did not handle the case where<br /> 1 cur_folio = NULL;<br /> <br /> in iomap_read_folio_iter() will not invalidate ctx-&gt;cur_folio, and<br /> iomap_read_end() will still be called on the folio even though the IO<br /> helper owns it and will finish the read on it.<br /> <br /> Fix this by unconditionally invalidating ctx-&gt;cur_folio for the !ifs<br /> case.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 6.19.11 (excluding)
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools