CVE-2022-49053 (GCVE-0-2022-49053)
Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-08-05 08:53
VLAI
EPSS
VEX
Title
scsi: target: tcmu: Fix possible page UAF
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: tcmu: Fix possible page UAF
tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not
take refcount properly and just returns page pointer. When
tcmu_try_get_data_page() returns, the returned page may have been freed by
tcmu_blocks_release().
We need to get_page() under cmdr_lock to avoid concurrent
tcmu_blocks_release().
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 17:59 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
141685a39151aea95eb56562d2953e919c6c73da , < d7c5d79e50be6e06b669141e3db1f977a0dd4e8e
(git)
Affected: 141685a39151aea95eb56562d2953e919c6c73da , < e3e0e067d5b34e4a68e3cc55f8eebc413f56f8ed (git) Affected: 141685a39151aea95eb56562d2953e919c6c73da , < fb7a5115422fbd6a4d505e8844f1ef5529f10489 (git) Affected: 141685a39151aea95eb56562d2953e919c6c73da , < aec36b98a1bbaa84bfd8299a306e4c12314af626 (git) Affected: 141685a39151aea95eb56562d2953e919c6c73da , < b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322 (git) Affected: 141685a39151aea95eb56562d2953e919c6c73da , < a9564d84ed9f6ee71017d062d0d2182154294a4b (git) Affected: 141685a39151aea95eb56562d2953e919c6c73da , < a6968f7a367f128d120447360734344d5a3d5336 (git) |
guessed | |
| Linux | Linux |
Affected:
4.12
Unaffected: 0 , < 4.12 (semver) Unaffected: 4.14.276 , ≤ 4.14.* (semver) Unaffected: 4.19.239 , ≤ 4.19.* (semver) Unaffected: 5.4.190 , ≤ 5.4.* (semver) Unaffected: 5.10.112 , ≤ 5.10.* (semver) Unaffected: 5.15.35 , ≤ 5.15.* (semver) Unaffected: 5.17.4 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix) |
guessed |
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"product_status:recommended": "362",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2022-49053",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49053.json",
"version": "62"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49053\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T17:59:25.641949Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T17:59:27.457Z\"}}], \"cna\": {\"title\": \"scsi: target: tcmu: Fix possible page UAF\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"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\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The UAF is triggered in tcmu_vma_fault() when a local process faults on the mmap\u0027d TCMU UIO device (/dev/uioX); network I/O can only drive reclaim, not the use side.\\nAC:L - A malicious TCMU handler controls page faults on the mmap and can drive command completion/allocation patterns that schedule tcmu_blocks_release(), so both sides of the race are attacker-influenced and retryable.\\nPR:L - Exploitation requires opening/mmap\u0027ing an existing TCMU UIO device and acting as (or replacing) the userspace handler; TCMU\\u2019s design assumes a malicious handler and no capability check exists on the fault path beyond ordinary local device access.\\nUI:N - No separate victim action is required; the attacker triggers faults and reclaim themselves once they have the mapped TCMU device.\\nS:U - Impact is confined to the local kernel/host authority (memory corruption/privilege escalation); this is not a VM/IOMMU/sandbox boundary escape.\\nC:H - Page UAF in the fault path can map a freed and reallocated page into userspace, enabling arbitrary kernel/user memory disclosure.\\nI:H - The same UAF/page remap primitive enables heap spraying and arbitrary writes/control-flow hijacking in the kernel.\\nA:H - Use-after-free of a page during fault handling can cause kernel oops/panic even without a full exploit.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"141685a39151aea95eb56562d2953e919c6c73da\", \"lessThan\": \"d7c5d79e50be6e06b669141e3db1f977a0dd4e8e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"141685a39151aea95eb56562d2953e919c6c73da\", \"lessThan\": \"e3e0e067d5b34e4a68e3cc55f8eebc413f56f8ed\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"141685a39151aea95eb56562d2953e919c6c73da\", \"lessThan\": \"fb7a5115422fbd6a4d505e8844f1ef5529f10489\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"141685a39151aea95eb56562d2953e919c6c73da\", \"lessThan\": \"aec36b98a1bbaa84bfd8299a306e4c12314af626\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"141685a39151aea95eb56562d2953e919c6c73da\", \"lessThan\": \"b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"141685a39151aea95eb56562d2953e919c6c73da\", \"lessThan\": \"a9564d84ed9f6ee71017d062d0d2182154294a4b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"141685a39151aea95eb56562d2953e919c6c73da\", \"lessThan\": \"a6968f7a367f128d120447360734344d5a3d5336\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/target/target_core_user.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.14.276\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.239\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.190\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.112\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.35\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/target/target_core_user.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d7c5d79e50be6e06b669141e3db1f977a0dd4e8e\"}, {\"url\": \"https://git.kernel.org/stable/c/e3e0e067d5b34e4a68e3cc55f8eebc413f56f8ed\"}, {\"url\": \"https://git.kernel.org/stable/c/fb7a5115422fbd6a4d505e8844f1ef5529f10489\"}, {\"url\": \"https://git.kernel.org/stable/c/aec36b98a1bbaa84bfd8299a306e4c12314af626\"}, {\"url\": \"https://git.kernel.org/stable/c/b7f3b5d70c834f49f7d87a2f2ed1c6284d9a0322\"}, {\"url\": \"https://git.kernel.org/stable/c/a9564d84ed9f6ee71017d062d0d2182154294a4b\"}, {\"url\": \"https://git.kernel.org/stable/c/a6968f7a367f128d120447360734344d5a3d5336\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: target: tcmu: Fix possible page UAF\\n\\ntcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not\\ntake refcount properly and just returns page pointer. When\\ntcmu_try_get_data_page() returns, the returned page may have been freed by\\ntcmu_blocks_release().\\n\\nWe need to get_page() under cmdr_lock to avoid concurrent\\ntcmu_blocks_release().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.276\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.239\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.190\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.112\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.35\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.4\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18\", \"versionStartIncluding\": \"4.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:53:37.868Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-49053\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:53:37.868Z\", \"dateReserved\": \"2025-02-26T01:49:39.242Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T01:54:26.806Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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.
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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.
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