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Vulnerability record · CVE-2026-43256 · published 6 May 2026

CVE-2026-43256: Linux kernel out-of-bounds read vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: media: qcom: camss: vfe: Fix out-of-bounds access in vfe_isr_reg_update() vfe_isr() iterates using MSM_VFE_IMAGE_MASTERS_NUM(7) as the loop bound and passes the index to vfe_isr_reg_update(). However, vfe->line[] array is defined with VFE_LINE_NUM_MAX(4): struct vfe_line line[VFE_LINE_NUM_MAX]; When index is 4, 5, 6, the access to vfe->line[line_id] exceeds the array bounds and resulting in out-of-bounds memory access. Fix this by using separate loops for output lines and write masters.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.6% CWE-125 · Out-of-bounds read
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: media: qcom: camss: vfe: Fix out-of-bounds access in vfe_isr_reg_update() vfe_isr() iterates using MSM_VFE_IMAGE_MASTERS_NUM(7) as the loop bound and passes the index to vfe_isr_reg_update(). However, vfe->line[] array is defined with VFE_LINE_NUM_MAX(4): struct vfe_line line[VFE_LINE_NUM_MAX]; When index is 4, 5, 6, the access to vfe->line[line_id] exceeds the array bounds and resulting in out-of-bounds memory access. Fix this by using separate loops for output lines and write masters.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/0c074e80921fd18984b75836730d76c768c84f65 Patch
https://git.kernel.org/stable/c/1b103307df6d461a0731be25aca69ad0335b0933 Patch
https://git.kernel.org/stable/c/d965919af524e68cb2ab1a685872050ad2ee933d Patch
https://git.kernel.org/stable/c/e6cbf765686fb6c1d8f2530b3daf6c66efc92f5d Patch
https://git.kernel.org/stable/c/e7a38ecda2498e7ce998793ac2a46ca47317635d Patch
https://git.kernel.org/stable/c/fade67c88870f497a13ed450ba01f7236c92dd9b Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43256), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.