CVE-2026-31748 (GCVE-0-2026-31748)
Vulnerability from cvelistv5
Published
2026-05-01 14:14
Modified
2026-05-01 14:14
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In 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`.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 85acac61096f946a78cf0c4b65f7cebe580693b6 Version: 85acac61096f946a78cf0c4b65f7cebe580693b6 Version: 85acac61096f946a78cf0c4b65f7cebe580693b6 Version: 85acac61096f946a78cf0c4b65f7cebe580693b6 Version: 85acac61096f946a78cf0c4b65f7cebe580693b6 Version: 85acac61096f946a78cf0c4b65f7cebe580693b6 Version: 85acac61096f946a78cf0c4b65f7cebe580693b6 Version: 85acac61096f946a78cf0c4b65f7cebe580693b6 |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/comedi/drivers/me_daq.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "2fc25a4c2e055cd42ea39a1b42c89bfef70e0319",
"status": "affected",
"version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
"versionType": "git"
},
{
"lessThan": "9f39fa07259eb342908e4aa0271dee038a8ce4f8",
"status": "affected",
"version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
"versionType": "git"
},
{
"lessThan": "f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8",
"status": "affected",
"version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
"versionType": "git"
},
{
"lessThan": "c16ac4e173a05011437a2d868f70cc415339065a",
"status": "affected",
"version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
"versionType": "git"
},
{
"lessThan": "1bf8761eb59e94bf7b8c17b2a1ee48f14378b172",
"status": "affected",
"version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
"versionType": "git"
},
{
"lessThan": "a47ae40339c1048f519df33ff8840731720f57cb",
"status": "affected",
"version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
"versionType": "git"
},
{
"lessThan": "c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b",
"status": "affected",
"version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
"versionType": "git"
},
{
"lessThan": "cc797d4821c754c701d9714b58bea947e31dbbe0",
"status": "affected",
"version": "85acac61096f946a78cf0c4b65f7cebe580693b6",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/comedi/drivers/me_daq.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.29"
},
{
"lessThan": "2.6.29",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.134",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.81",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.22",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.12",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.253",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.203",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.168",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.134",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.81",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.22",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19.12",
"versionStartIncluding": "2.6.29",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0",
"versionStartIncluding": "2.6.29",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: me_daq: Fix potential overrun of firmware buffer\n\n`me2600_xilinx_download()` loads the firmware that was requested by\n`request_firmware()`. It is possible for it to overrun the source\nbuffer because it blindly trusts the file format. It reads a data\nstream length from the first 4 bytes into variable `file_length` and\nreads the data stream contents of length `file_length` from offset 16\nonwards. Although it checks that the supplied firmware is at least 16\nbytes long, it does not check that it is long enough to contain the data\nstream.\n\nAdd a test to ensure that the supplied firmware is long enough to\ncontain the header and the data stream. On failure, log an error and\nreturn `-EINVAL`."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-01T14:14:41.545Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319"
},
{
"url": "https://git.kernel.org/stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8"
},
{
"url": "https://git.kernel.org/stable/c/f3f8ec00cfb8d8e826e30b1138a56355b88e9ba8"
},
{
"url": "https://git.kernel.org/stable/c/c16ac4e173a05011437a2d868f70cc415339065a"
},
{
"url": "https://git.kernel.org/stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172"
},
{
"url": "https://git.kernel.org/stable/c/a47ae40339c1048f519df33ff8840731720f57cb"
},
{
"url": "https://git.kernel.org/stable/c/c8c607a77aab783f2e38cc2e0f24aa6c8f6d200b"
},
{
"url": "https://git.kernel.org/stable/c/cc797d4821c754c701d9714b58bea947e31dbbe0"
}
],
"title": "comedi: me_daq: Fix potential overrun of firmware buffer",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-31748",
"datePublished": "2026-05-01T14:14:41.545Z",
"dateReserved": "2026-03-09T15:48:24.138Z",
"dateUpdated": "2026-05-01T14:14:41.545Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…