CVE-2026-89879

media: s2255: bound JPEG frame size before copying into the buffer

Published Sep 16, 2026 CVSS n/a EPSS < 1% KEV · Not listed

Description

In the Linux kernel, the following vulnerability has been resolved:

media: s2255: bound JPEG frame size before copying into the buffer

s2255_fillbuff() memcpy()s vc->jpg_size bytes of a captured JPEG/MJPEG
frame into the vb2 plane. vc->jpg_size is taken verbatim from the
S2255_MARKER_FRAME header the device sends (pdword[4] in save_frame())
and, unlike the frame payload length just above it, is never bounded:

payload = le32_to_cpu(pdword[3]);
if (payload > vc->req_image_size) /* payload is checked ... */
return -EINVAL;
vc->pkt_size = payload;
vc->jpg_size = le32_to_cpu(pdword[4]); /* ... jpg_size is not */

A malicious or malfunctioning device can therefore report a jpg_size
larger than the destination vb2 plane, and the memcpy() writes past it.
jpg_size is a signed int, so a value with the top bit set also turns
into a huge length.

Reject a frame whose jpg_size is negative or exceeds the plane size
before copying it.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7`	affected	< 32a595dd3e8634544e5cfbc47f906dff3d3c1ef8
`38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7`	affected	< 4b6f7bccc6559ae5c54573c284fe76eafc9989b2
`38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7`	affected	< 2542516a147bfad740e7e411c251b639fad260ff
`38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7`	affected	< 79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77
`38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7`	affected	< d2ecaaab6a4f165abb54cdf61be60030b5782bf8
`38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7`	affected	< 68d664f1b4efe525e99154b7058fcb0378bdaff7
`38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7`	affected	< dd739517560c8d0ec4463a53e717bf40b988d7da
`38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7`	affected	< e504cc888f42999dd76b6a43788c422610f2aad2

Linux

affected

Version	Status	Constraints
`2.6.27`	affected	—
`0`	unaffected	< 2.6.27
`5.10.270`	unaffected	≤ 5.10.*
`5.15.221`	unaffected	≤ 5.15.*
`6.1.188`	unaffected	≤ 6.1.*
`6.6.157`	unaffected	≤ 6.6.*
`6.12.110`	unaffected	≤ 6.12.*
`6.18.51`	unaffected	≤ 6.18.*
`7.2.5`	unaffected	≤ 7.2.*
`7.3`	unaffected	≤ *

No data.

Vendor Product Versions

Linux

Linux Kernel

Version	Status	Scheme	Platform
`[38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7,32a595dd3e8634544e5cfbc47f906dff3d3c1ef8)`	affected	code_commit	—
`[38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7,4b6f7bccc6559ae5c54573c284fe76eafc9989b2)`	affected	code_commit	—
`[38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7,2542516a147bfad740e7e411c251b639fad260ff)`	affected	code_commit	—
`[38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7,79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77)`	affected	code_commit	—
`[38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7,d2ecaaab6a4f165abb54cdf61be60030b5782bf8)`	affected	code_commit	—
`[38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7,68d664f1b4efe525e99154b7058fcb0378bdaff7)`	affected	code_commit	—
`[38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7,dd739517560c8d0ec4463a53e717bf40b988d7da)`	affected	code_commit	—
`[38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7,e504cc888f42999dd76b6a43788c422610f2aad2)`	affected	code_commit	—

Linux

Linux Kernel

Version	Status	Scheme	Platform
`2.6.27`	affected	semver	—
`[0,2.6.27)`	unaffected	semver	—
`[5.10.270,5.10.*]`	unaffected	generic	—
`[5.15.221,5.15.*]`	unaffected	generic	—
`[6.1.188,6.1.*]`	unaffected	generic	—
`[6.6.157,6.6.*]`	unaffected	generic	—
`[6.12.110,6.12.*]`	unaffected	generic	—
`[6.18.51,6.18.*]`	unaffected	generic	—
`[7.2.5,7.2.*]`	unaffected	generic	—
`[7.3-rc1,*]`	unaffected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
Debian DLA	DLA-4817-1	linux-6.12 security update
Debian DLA	DLA-4841-1	linux security update
Debian DSA	DSA-6528-1	linux security update
Ubuntu USN	USN-8961-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9019-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9020-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9022-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9023-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9024-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9025-1	Linux kernel vulnerabilities
Ubuntu USN	USN-9026-1	Linux kernel (Azure) vulnerabilities
Ubuntu USN	USN-9029-1	Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN	USN-9039-1	Linux kernel (Azure CVM) vulnerabilities
Ubuntu USN	USN-9040-1	Linux kernel (Low Latency NVIDIA) vulnerabilities
Ubuntu USN	USN-9066-1	Linux kernel (HWE) vulnerabilities
Ubuntu USN	USN-9091-1	Linux kernel (NVIDIA Tegra) vulnerabilities

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.216% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/2542516a147bfad740e7e411c251b639fad260ff
https://git.kernel.org/stable/c/32a595dd3e8634544e5cfbc47f906dff3d3c1ef8
https://git.kernel.org/stable/c/4b6f7bccc6559ae5c54573c284fe76eafc9989b2
https://git.kernel.org/stable/c/68d664f1b4efe525e99154b7058fcb0378bdaff7
https://git.kernel.org/stable/c/79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77
https://git.kernel.org/stable/c/d2ecaaab6a4f165abb54cdf61be60030b5782bf8
https://git.kernel.org/stable/c/dd739517560c8d0ec4463a53e717bf40b988d7da
https://git.kernel.org/stable/c/e504cc888f42999dd76b6a43788c422610f2aad2

History

Sep 18, 2026 3:30 AM Weaknesses updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-119

Sep 16, 2026 10:45 AM Description updated. Title updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references View changes

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: media: s2255: bound JPEG frame size before copying into the buffer s2255_fillbuff() memcpy()s vc->jpg_size bytes of a captured JPEG/MJPEG frame into the vb2 plane. vc->jpg_size is taken verbatim from the S2255_MARKER_FRAME header the device sends (pdword[4] in save_frame()) and, unlike the frame payload length just above it, is never bounded: payload = le32_to_cpu(pdword[3]); if (payload > vc->req_image_size) /* payload is checked ... / return -EINVAL; vc->pkt_size = payload; vc->jpg_size = le32_to_cpu(pdword[4]); / ... jpg_size is not */ A malicious or malfunctioning device can therefore report a jpg_size larger than the destination vb2 plane, and the memcpy() writes past it. jpg_size is a signed int, so a value with the top bit set also turns into a huge length. Reject a frame whose jpg_size is negative or exceeds the plane size before copying it.
Title		media: s2255: bound JPEG frame size before copying into the buffer
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/2542516a147bfad740e7e411c251b639fad260ff https://git.kernel.org/stable/c/32a595dd3e8634544e5cfbc47f906dff3d3c1ef8 https://git.kernel.org/stable/c/4b6f7bccc6559ae5c54573c284fe76eafc9989b2 https://git.kernel.org/stable/c/68d664f1b4efe525e99154b7058fcb0378bdaff7 https://git.kernel.org/stable/c/79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77 https://git.kernel.org/stable/c/d2ecaaab6a4f165abb54cdf61be60030b5782bf8 https://git.kernel.org/stable/c/dd739517560c8d0ec4463a53e717bf40b988d7da https://git.kernel.org/stable/c/e504cc888f42999dd76b6a43788c422610f2aad2