CVE-2026-46191 (GCVE-0-2026-46191)
Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-06-19 11:59
VLAI
EPSS
VEX
Title
fbcon: Avoid OOB font access if console rotation fails
Summary
In the Linux kernel, the following vulnerability has been resolved:
fbcon: Avoid OOB font access if console rotation fails
Clear the font buffer if the reallocation during console rotation fails
in fbcon_rotate_font(). The putcs implementations for the rotated buffer
will return early in this case. See [1] for an example.
Currently, fbcon_rotate_font() keeps the old buffer, which is too small
for the rotated font. Printing to the rotated console with a high-enough
character code will overflow the font buffer.
v2:
- fix typos in commit message
Severity
7.1 (High)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
6cc50e1c5b57180fd37a31282000f43859b0fe73 , < b51c343a81e6e806525a4435e22532c107dd7e9d
(git)
Affected: 6cc50e1c5b57180fd37a31282000f43859b0fe73 , < 46cf3646dea54baeaa2eafe3fb1ba769947f31b0 (git) Affected: 6cc50e1c5b57180fd37a31282000f43859b0fe73 , < 524a6079395916fb3d790ef2bb46a1d2939b27dd (git) Affected: 6cc50e1c5b57180fd37a31282000f43859b0fe73 , < 594973a2e54924d8ba31c9faac669fc1ba6fcb80 (git) Affected: 6cc50e1c5b57180fd37a31282000f43859b0fe73 , < ab6c34b9829d5de03f1d08a47a2253729a6e7e27 (git) Affected: 6cc50e1c5b57180fd37a31282000f43859b0fe73 , < 7105d9f1387d63b15c9a860674fc92c959181f2f (git) Affected: 6cc50e1c5b57180fd37a31282000f43859b0fe73 , < b44cc78ff46b96e72d333a3be6aaaa0a14797263 (git) Affected: 6cc50e1c5b57180fd37a31282000f43859b0fe73 , < e4ef723d8975a2694cc90733a6b888a5e2841842 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.15
Unaffected: 0 , < 2.6.15 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.90 , ≤ 6.12.* (semver) Unaffected: 6.18.32 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/video/fbdev/core/fbcon_rotate.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "b51c343a81e6e806525a4435e22532c107dd7e9d",
"status": "affected",
"version": "6cc50e1c5b57180fd37a31282000f43859b0fe73",
"versionType": "git"
},
{
"lessThan": "46cf3646dea54baeaa2eafe3fb1ba769947f31b0",
"status": "affected",
"version": "6cc50e1c5b57180fd37a31282000f43859b0fe73",
"versionType": "git"
},
{
"lessThan": "524a6079395916fb3d790ef2bb46a1d2939b27dd",
"status": "affected",
"version": "6cc50e1c5b57180fd37a31282000f43859b0fe73",
"versionType": "git"
},
{
"lessThan": "594973a2e54924d8ba31c9faac669fc1ba6fcb80",
"status": "affected",
"version": "6cc50e1c5b57180fd37a31282000f43859b0fe73",
"versionType": "git"
},
{
"lessThan": "ab6c34b9829d5de03f1d08a47a2253729a6e7e27",
"status": "affected",
"version": "6cc50e1c5b57180fd37a31282000f43859b0fe73",
"versionType": "git"
},
{
"lessThan": "7105d9f1387d63b15c9a860674fc92c959181f2f",
"status": "affected",
"version": "6cc50e1c5b57180fd37a31282000f43859b0fe73",
"versionType": "git"
},
{
"lessThan": "b44cc78ff46b96e72d333a3be6aaaa0a14797263",
"status": "affected",
"version": "6cc50e1c5b57180fd37a31282000f43859b0fe73",
"versionType": "git"
},
{
"lessThan": "e4ef723d8975a2694cc90733a6b888a5e2841842",
"status": "affected",
"version": "6cc50e1c5b57180fd37a31282000f43859b0fe73",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/video/fbdev/core/fbcon_rotate.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.15"
},
{
"lessThan": "2.6.15",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.90",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.32",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.7",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.259",
"versionStartIncluding": "2.6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.210",
"versionStartIncluding": "2.6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.176",
"versionStartIncluding": "2.6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.140",
"versionStartIncluding": "2.6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.90",
"versionStartIncluding": "2.6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.32",
"versionStartIncluding": "2.6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0.7",
"versionStartIncluding": "2.6.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1",
"versionStartIncluding": "2.6.15",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: Avoid OOB font access if console rotation fails\n\nClear the font buffer if the reallocation during console rotation fails\nin fbcon_rotate_font(). The putcs implementations for the rotated buffer\nwill return early in this case. See [1] for an example.\n\nCurrently, fbcon_rotate_font() keeps the old buffer, which is too small\nfor the rotated font. Printing to the rotated console with a high-enough\ncharacter code will overflow the font buffer.\n\nv2:\n- fix typos in commit message"
}
],
"providerMetadata": {
"dateUpdated": "2026-06-19T11:59:53.468Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/b51c343a81e6e806525a4435e22532c107dd7e9d"
},
{
"url": "https://git.kernel.org/stable/c/46cf3646dea54baeaa2eafe3fb1ba769947f31b0"
},
{
"url": "https://git.kernel.org/stable/c/524a6079395916fb3d790ef2bb46a1d2939b27dd"
},
{
"url": "https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80"
},
{
"url": "https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27"
},
{
"url": "https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f"
},
{
"url": "https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263"
},
{
"url": "https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842"
}
],
"title": "fbcon: Avoid OOB font access if console rotation fails",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-46191",
"datePublished": "2026-05-28T09:36:44.961Z",
"dateReserved": "2026-05-13T15:03:33.104Z",
"dateUpdated": "2026-06-19T11:59:53.468Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-46191",
"date": "2026-09-14",
"epss": "0.00131",
"percentile": "0.03067"
},
"microsoft_vex": {
"current_release_date": "2026-06-09T14:47:29.000Z",
"cve": "CVE-2026-46191",
"id": "msrc_CVE-2026-46191",
"initial_release_date": "2026-05-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "fbcon: Avoid OOB font access if console rotation fails",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46191.json",
"version": "3"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-46191\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-28T10:16:34.740\",\"lastModified\":\"2026-06-19T13:16:34.980\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfbcon: Avoid OOB font access if console rotation fails\\n\\nClear the font buffer if the reallocation during console rotation fails\\nin fbcon_rotate_font(). The putcs implementations for the rotated buffer\\nwill return early in this case. See [1] for an example.\\n\\nCurrently, fbcon_rotate_font() keeps the old buffer, which is too small\\nfor the rotated font. Printing to the rotated console with a high-enough\\ncharacter code will overflow the font buffer.\\n\\nv2:\\n- fix typos in commit message\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/video/fbdev/core/fbcon_rotate.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6cc50e1c5b57180fd37a31282000f43859b0fe73\",\"lessThan\":\"b51c343a81e6e806525a4435e22532c107dd7e9d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6cc50e1c5b57180fd37a31282000f43859b0fe73\",\"lessThan\":\"46cf3646dea54baeaa2eafe3fb1ba769947f31b0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6cc50e1c5b57180fd37a31282000f43859b0fe73\",\"lessThan\":\"524a6079395916fb3d790ef2bb46a1d2939b27dd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6cc50e1c5b57180fd37a31282000f43859b0fe73\",\"lessThan\":\"594973a2e54924d8ba31c9faac669fc1ba6fcb80\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6cc50e1c5b57180fd37a31282000f43859b0fe73\",\"lessThan\":\"ab6c34b9829d5de03f1d08a47a2253729a6e7e27\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6cc50e1c5b57180fd37a31282000f43859b0fe73\",\"lessThan\":\"7105d9f1387d63b15c9a860674fc92c959181f2f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6cc50e1c5b57180fd37a31282000f43859b0fe73\",\"lessThan\":\"b44cc78ff46b96e72d333a3be6aaaa0a14797263\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6cc50e1c5b57180fd37a31282000f43859b0fe73\",\"lessThan\":\"e4ef723d8975a2694cc90733a6b888a5e2841842\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/video/fbdev/core/fbcon_rotate.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.259\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.210\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.176\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.140\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.90\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.32\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.7\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.15\",\"versionEndExcluding\":\"6.6.140\",\"matchCriteriaId\":\"72788083-DE76-436F-8F3A-A2B84197FB84\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.90\",\"matchCriteriaId\":\"3BAAA2BE-6EEC-45D5-AD66-50F63CA20483\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.32\",\"matchCriteriaId\":\"CB9F1FA8-6D5E-42B1-9877-57BACFE5C886\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"7.0.7\",\"matchCriteriaId\":\"D0893CA7-9AE6-4DFE-AC75-48967D73AD8E\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/46cf3646dea54baeaa2eafe3fb1ba769947f31b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/524a6079395916fb3d790ef2bb46a1d2939b27dd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b51c343a81e6e806525a4435e22532c107dd7e9d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T11:15:10+00:00",
"cve": "CVE-2026-46191",
"id": "CVE-2026-46191",
"initial_release_date": "2026-05-28T00:00:00+00:00",
"product_status:known_affected": "232",
"product_status:known_not_affected": "42",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: fbcon: Avoid OOB font access if console rotation fails",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46191.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T01:11:21Z",
"cve": "CVE-2026-46191",
"id": "CVE-2026-46191",
"initial_release_date": "2026-05-29T01:15:28Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "649",
"product_status:recommended": "277",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-46191",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46191.json",
"version": "16"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Loading…
Loading…