CVE-2026-99098 (GCVE-0-2026-99098)
Vulnerability from cvelistv5
Published
2026-10-26 14:52
Modified
2026-10-26 14:52
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
dm-integrity: fix buffer overflow in inline mode with large tag size
In inline mode, dm_integrity_check and dm_integrity_inline_recheck
compute the checksum of each block into an on-stack buffer of
HASH_MAX_DIGESTSIZE bytes. integrity_sector_checksum pads its result
with zeroes up to the tag size, so if the tag size is larger than
HASH_MAX_DIGESTSIZE, the padding runs past the end of the buffer. With
CONFIG_STACKPROTECTOR the kernel panics in dm_integrity_check on the
first read.
Enlarge both buffers to hold MAX_TAG_SIZE bytes, as commit b93b6643e9b5
("dm integrity: fix a crash with unusually large tag size") did for
integrity_metadata.
Note that this is not a security bug because the buffer overflow can only
be triggered by root.
References
| URL | Tags | |
|---|---|---|
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/md/dm-integrity.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3c7aad85aeb9e28386672e3a009aa2e61f751b86",
"status": "affected",
"version": "fb0987682c629c1d2c476f35f6fde405a5e304a4",
"versionType": "git"
},
{
"lessThan": "4f0ee735dc68e3e6c4dd9a666d7f7047163c4165",
"status": "affected",
"version": "fb0987682c629c1d2c476f35f6fde405a5e304a4",
"versionType": "git"
},
{
"lessThan": "f49cd7820cd0a96f20e1aa2708adb002124e38a7",
"status": "affected",
"version": "fb0987682c629c1d2c476f35f6fde405a5e304a4",
"versionType": "git"
},
{
"lessThan": "764b683a6180fd72c931c13fea98d383506a3475",
"status": "affected",
"version": "fb0987682c629c1d2c476f35f6fde405a5e304a4",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/md/dm-integrity.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.11"
},
{
"lessThan": "6.11",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.114",
"versionStartIncluding": "6.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.57",
"versionStartIncluding": "6.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.2.11",
"versionStartIncluding": "6.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.3",
"versionStartIncluding": "6.11",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-integrity: fix buffer overflow in inline mode with large tag size\n\nIn inline mode, dm_integrity_check and dm_integrity_inline_recheck\ncompute the checksum of each block into an on-stack buffer of\nHASH_MAX_DIGESTSIZE bytes. integrity_sector_checksum pads its result\nwith zeroes up to the tag size, so if the tag size is larger than\nHASH_MAX_DIGESTSIZE, the padding runs past the end of the buffer. With\nCONFIG_STACKPROTECTOR the kernel panics in dm_integrity_check on the\nfirst read.\n\nEnlarge both buffers to hold MAX_TAG_SIZE bytes, as commit b93b6643e9b5\n(\"dm integrity: fix a crash with unusually large tag size\") did for\nintegrity_metadata.\n\nNote that this is not a security bug because the buffer overflow can only\nbe triggered by root."
}
],
"providerMetadata": {
"dateUpdated": "2026-10-26T14:52:04.416Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3c7aad85aeb9e28386672e3a009aa2e61f751b86"
},
{
"url": "https://git.kernel.org/stable/c/4f0ee735dc68e3e6c4dd9a666d7f7047163c4165"
},
{
"url": "https://git.kernel.org/stable/c/f49cd7820cd0a96f20e1aa2708adb002124e38a7"
},
{
"url": "https://git.kernel.org/stable/c/764b683a6180fd72c931c13fea98d383506a3475"
}
],
"title": "dm-integrity: fix buffer overflow in inline mode with large tag size",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-99098",
"datePublished": "2026-10-26T14:52:04.416Z",
"dateReserved": "2026-09-25T10:25:14.391Z",
"dateUpdated": "2026-10-26T14:52:04.416Z",
"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…