CVE-2026-46058 (GCVE-0-2026-46058)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-08-05 12:29
VLAI
EPSS
VEX
Title
media: amphion: Fix race between m2m job_abort and device_run
Summary
In the Linux kernel, the following vulnerability has been resolved:
media: amphion: Fix race between m2m job_abort and device_run
Fix kernel panic caused by race condition where v4l2_m2m_ctx_release()
frees m2m_ctx while v4l2_m2m_try_run() is about to call device_run
with the same context.
Race sequence:
v4l2_m2m_try_run(): v4l2_m2m_ctx_release():
lock/unlock v4l2_m2m_cancel_job()
job_abort()
v4l2_m2m_job_finish()
kfree(m2m_ctx) <- frees ctx
device_run() <- use-after-free crash at 0x538
Crash trace:
Unable to handle kernel read from unreadable memory at virtual address
0000000000000538
v4l2_m2m_try_run+0x78/0x138
v4l2_m2m_device_run_work+0x14/0x20
The amphion vpu driver does not rely on the m2m framework's device_run
callback to perform encode/decode operations.
Fix the race by preventing m2m framework job scheduling entirely:
- Add job_ready callback returning 0 (no jobs ready for m2m framework)
- Remove job_abort callback to avoid the race condition
Severity
7.8 (High)
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
3cd084519c6f91cbef9d604bcf26844fa81d4922 , < 516467052fdfc6a13eadc70d43420ae57436bf3c
(git)
Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < 42dc622776f3ce1a6c31b13bdc686f7295e3b323 (git) Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < da4f46c5cf1d26e6b09418ad453e152f2e75a02c (git) Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < fdc150dac1adb9a98be9d6956cff0348838b024a (git) Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < 6be2cb75bc1300080cfc8051579f22efae9401f7 (git) Affected: 3cd084519c6f91cbef9d604bcf26844fa81d4922 , < 8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e (git) |
guessed | |
| Linux | Linux |
Affected:
5.18
Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/media/platform/amphion/vpu_v4l2.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "516467052fdfc6a13eadc70d43420ae57436bf3c",
"status": "affected",
"version": "3cd084519c6f91cbef9d604bcf26844fa81d4922",
"versionType": "git"
},
{
"lessThan": "42dc622776f3ce1a6c31b13bdc686f7295e3b323",
"status": "affected",
"version": "3cd084519c6f91cbef9d604bcf26844fa81d4922",
"versionType": "git"
},
{
"lessThan": "da4f46c5cf1d26e6b09418ad453e152f2e75a02c",
"status": "affected",
"version": "3cd084519c6f91cbef9d604bcf26844fa81d4922",
"versionType": "git"
},
{
"lessThan": "fdc150dac1adb9a98be9d6956cff0348838b024a",
"status": "affected",
"version": "3cd084519c6f91cbef9d604bcf26844fa81d4922",
"versionType": "git"
},
{
"lessThan": "6be2cb75bc1300080cfc8051579f22efae9401f7",
"status": "affected",
"version": "3cd084519c6f91cbef9d604bcf26844fa81d4922",
"versionType": "git"
},
{
"lessThan": "8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e",
"status": "affected",
"version": "3cd084519c6f91cbef9d604bcf26844fa81d4922",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/media/platform/amphion/vpu_v4l2.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"lessThan": "5.18",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.175",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.140",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.86",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.27",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"version": "7.0.4",
"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": "6.1.175",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.140",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.86",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18.27",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0.4",
"versionStartIncluding": "5.18",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.1",
"versionStartIncluding": "5.18",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: amphion: Fix race between m2m job_abort and device_run\n\nFix kernel panic caused by race condition where v4l2_m2m_ctx_release()\nfrees m2m_ctx while v4l2_m2m_try_run() is about to call device_run\nwith the same context.\n\nRace sequence:\n v4l2_m2m_try_run(): v4l2_m2m_ctx_release():\n lock/unlock v4l2_m2m_cancel_job()\n job_abort()\n v4l2_m2m_job_finish()\n kfree(m2m_ctx) \u003c- frees ctx\n device_run() \u003c- use-after-free crash at 0x538\n\nCrash trace:\n Unable to handle kernel read from unreadable memory at virtual address\n 0000000000000538\n v4l2_m2m_try_run+0x78/0x138\n v4l2_m2m_device_run_work+0x14/0x20\n\nThe amphion vpu driver does not rely on the m2m framework\u0027s device_run\ncallback to perform encode/decode operations.\n\nFix the race by preventing m2m framework job scheduling entirely:\n- Add job_ready callback returning 0 (no jobs ready for m2m framework)\n- Remove job_abort callback to avoid the race condition"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The amphion VPU is a V4L2 mem2mem device reached only through a local `/dev/videoN` device file via open/ioctl/close; there is no network or remote path to this code.\nAC:L - The flaw is a race the attacker fully controls by running one thread that streams/queues buffers (scheduling a job) and another that closes the fd (triggering release); it can be retried in a loop until won.\nPR:L - Exploitation requires a local unprivileged user with access to the V4L2 device node (typically granted via the video group or logged-in session ACL); no root is needed.\nUI:N - The attacker performs all steps (open, stream, concurrent close) itself; no action by any other user is required.\nS:U - The vulnerability and its impact are confined to the kernel\u0027s own security authority with no crossing of a VM/IOMMU/sandbox boundary.\nC:H - The freed `m2m_ctx` is dereferenced after `kfree` (use-after-free per the fix), and a UAF over a slab object the attacker can groom/reallocate is treated as enabling arbitrary read of freed contents.\nI:H - The use-after-free on the freed context permits heap grooming/reallocation of the object that is then dereferenced, providing a write/control primitive consistent with kernel UAF integrity impact.\nA:H - The race reliably faults on an invalid pointer in `v4l2_m2m_try_run`, producing a kernel oops/panic and denial of service."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:29:25.621Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/516467052fdfc6a13eadc70d43420ae57436bf3c"
},
{
"url": "https://git.kernel.org/stable/c/42dc622776f3ce1a6c31b13bdc686f7295e3b323"
},
{
"url": "https://git.kernel.org/stable/c/da4f46c5cf1d26e6b09418ad453e152f2e75a02c"
},
{
"url": "https://git.kernel.org/stable/c/fdc150dac1adb9a98be9d6956cff0348838b024a"
},
{
"url": "https://git.kernel.org/stable/c/6be2cb75bc1300080cfc8051579f22efae9401f7"
},
{
"url": "https://git.kernel.org/stable/c/8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e"
}
],
"title": "media: amphion: Fix race between m2m job_abort and device_run",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-46058",
"datePublished": "2026-05-27T12:57:17.853Z",
"dateReserved": "2026-05-13T15:03:33.095Z",
"dateUpdated": "2026-08-05T12:29:25.621Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-46058",
"date": "2026-09-14",
"epss": "0.00097",
"percentile": "0.00825"
},
"microsoft_vex": {
"current_release_date": "2026-06-09T14:50:38.000Z",
"cve": "CVE-2026-46058",
"id": "msrc_CVE-2026-46058",
"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": "media: amphion: Fix race between m2m job_abort and device_run",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46058.json",
"version": "3"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-46058\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-27T14:17:25.537\",\"lastModified\":\"2026-06-17T10:52:59.783\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: amphion: Fix race between m2m job_abort and device_run\\n\\nFix kernel panic caused by race condition where v4l2_m2m_ctx_release()\\nfrees m2m_ctx while v4l2_m2m_try_run() is about to call device_run\\nwith the same context.\\n\\nRace sequence:\\n v4l2_m2m_try_run(): v4l2_m2m_ctx_release():\\n lock/unlock v4l2_m2m_cancel_job()\\n job_abort()\\n v4l2_m2m_job_finish()\\n kfree(m2m_ctx) \u003c- frees ctx\\n device_run() \u003c- use-after-free crash at 0x538\\n\\nCrash trace:\\n Unable to handle kernel read from unreadable memory at virtual address\\n 0000000000000538\\n v4l2_m2m_try_run+0x78/0x138\\n v4l2_m2m_device_run_work+0x14/0x20\\n\\nThe amphion vpu driver does not rely on the m2m framework\u0027s device_run\\ncallback to perform encode/decode operations.\\n\\nFix the race by preventing m2m framework job scheduling entirely:\\n- Add job_ready callback returning 0 (no jobs ready for m2m framework)\\n- Remove job_abort callback to avoid the race condition\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/media/platform/amphion/vpu_v4l2.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3cd084519c6f91cbef9d604bcf26844fa81d4922\",\"lessThan\":\"516467052fdfc6a13eadc70d43420ae57436bf3c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3cd084519c6f91cbef9d604bcf26844fa81d4922\",\"lessThan\":\"42dc622776f3ce1a6c31b13bdc686f7295e3b323\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3cd084519c6f91cbef9d604bcf26844fa81d4922\",\"lessThan\":\"da4f46c5cf1d26e6b09418ad453e152f2e75a02c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3cd084519c6f91cbef9d604bcf26844fa81d4922\",\"lessThan\":\"fdc150dac1adb9a98be9d6956cff0348838b024a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3cd084519c6f91cbef9d604bcf26844fa81d4922\",\"lessThan\":\"6be2cb75bc1300080cfc8051579f22efae9401f7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"3cd084519c6f91cbef9d604bcf26844fa81d4922\",\"lessThan\":\"8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/media/platform/amphion/vpu_v4l2.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.175\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.140\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.86\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.27\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.4\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"6.1.175\",\"matchCriteriaId\":\"FE99B3A9-CC61-4329-91B2-DC8483A7D1CF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.140\",\"matchCriteriaId\":\"A1A92866-F406-43B5-B2D1-CFC274753E9D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.86\",\"matchCriteriaId\":\"55DA1C62-9991-451E-B8A8-E0004E00F789\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.27\",\"matchCriteriaId\":\"A10AC84F-C058-47D5-85B4-E6E51A613B74\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"7.0.4\",\"matchCriteriaId\":\"CDB78D6D-22C3-4154-B0D0-94AF1CE5C2E3\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/42dc622776f3ce1a6c31b13bdc686f7295e3b323\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/516467052fdfc6a13eadc70d43420ae57436bf3c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6be2cb75bc1300080cfc8051579f22efae9401f7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8cd35ceadcfc8c5da2eb7f7ce24525ce9d4ee62e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/da4f46c5cf1d26e6b09418ad453e152f2e75a02c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fdc150dac1adb9a98be9d6956cff0348838b024a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-06-28T07:40:45+00:00",
"cve": "CVE-2026-46058",
"id": "CVE-2026-46058",
"initial_release_date": "2026-05-27T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: media: amphion: Fix race between m2m job_abort and device_run",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46058.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T16:57:19Z",
"cve": "CVE-2026-46058",
"id": "CVE-2026-46058",
"initial_release_date": "2026-05-28T03:53:30Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "424",
"product_status:known_not_affected": "294",
"product_status:recommended": "254",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-46058",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46058.json",
"version": "10"
}
}
}
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…