comedi: me_daq: Fix potential overrun of firmware buffer

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-31748
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-01 15:16:37 UTC
Updated2026-05-07 19:24:39 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: comedi: me_daq: Fix potential overrun of firmware buffer `me2600_xilinx_download()` loads the firmware that was requested by `request_firmware()`. It is possible for it to overrun the source buffer because it blindly trusts the file format. It reads a data stream length from the first 4 bytes into variable `file_length` and reads the data stream contents of length `file_length` from offset 16 onwards. Although it checks that the supplied firmware is at least 16 bytes long, it does not check that it is long enough to contain the data stream. Add a test to ensure that the supplied firmware is long enough to contain the header and the data stream. On failure, log an error and return `-EINVAL`.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

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

EPSS: 0.000240000 probability, percentile 0.068060000 (date 2026-05-05)

Problem Types: CWE-787

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 85acac61096f946a78cf0c4b65f7cebe580693b6 2fc25a4c2e055cd42ea39a1b42c89bfef70e0319 git Not specified
CNA Linux Linux affected 85acac61096f946a78cf0c4b65f7cebe580693b6 9f39fa07259eb342908e4aa0271dee038a8ce4f8 git Not specified
CNA Linux Linux affected 85acac61096f946a78cf0c4b65f7cebe580693b6 f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8 git Not specified
CNA Linux Linux affected 85acac61096f946a78cf0c4b65f7cebe580693b6 c16ac4e173a05011437a2d868f70cc415339065a git Not specified
CNA Linux Linux affected 85acac61096f946a78cf0c4b65f7cebe580693b6 1bf8761eb59e94bf7b8c17b2a1ee48f14378b172 git Not specified
CNA Linux Linux affected 85acac61096f946a78cf0c4b65f7cebe580693b6 a47ae40339c1048f519df33ff8840731720f57cb git Not specified
CNA Linux Linux affected 85acac61096f946a78cf0c4b65f7cebe580693b6 c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b git Not specified
CNA Linux Linux affected 85acac61096f946a78cf0c4b65f7cebe580693b6 cc797d4821c754c701d9714b58bea947e31dbbe0 git Not specified
CNA Linux Linux affected 2.6.29 Not specified
CNA Linux Linux unaffected 2.6.29 semver Not specified
CNA Linux Linux unaffected 5.10.253 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.168 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.134 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.81 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.22 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.12 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c16ac4e173a05011437a2d868f70cc415339065a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/cc797d4821c754c701d9714b58bea947e31dbbe0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a47ae40339c1048f519df33ff8840731720f57cb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report