FKIE_CVE-2022-48795
Vulnerability from fkie_nvd - Published: 2024-07-16 12:15 - Updated: 2026-06-17 05:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
parisc: Fix data TLB miss in sba_unmap_sg
Rolf Eike Beer reported the following bug:
[1274934.746891] Bad Address (null pointer deref?): Code=15 (Data TLB miss fault) at addr 0000004140000018
[1274934.746891] CPU: 3 PID: 5549 Comm: cmake Not tainted 5.15.4-gentoo-parisc64 #4
[1274934.746891] Hardware name: 9000/785/C8000
[1274934.746891]
[1274934.746891] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
[1274934.746891] PSW: 00001000000001001111111000001110 Not tainted
[1274934.746891] r00-03 000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000
[1274934.746891] r04-07 0000000040b693c0 0000004140000000 000000004a2b08b0 0000000000000001
[1274934.746891] r08-11 0000000041f98810 0000000000000000 000000004a0a7000 0000000000000001
[1274934.746891] r12-15 0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0
[1274934.746891] r16-19 0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007
[1274934.746891] r20-23 0000000000000006 000000004a368950 0000000000000000 0000000000000001
[1274934.746891] r24-27 0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0
[1274934.746891] r28-31 0000000000000001 0000000041f988b0 0000000041f98840 000000004a171118
[1274934.746891] sr00-03 00000000066e5800 0000000000000000 0000000000000000 00000000066e5800
[1274934.746891] sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[1274934.746891]
[1274934.746891] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000406760e8 00000000406760ec
[1274934.746891] IIR: 48780030 ISR: 0000000000000000 IOR: 0000004140000018
[1274934.746891] CPU: 3 CR30: 00000040e3a9c000 CR31: ffffffffffffffff
[1274934.746891] ORIG_R28: 0000000040acdd58
[1274934.746891] IAOQ[0]: sba_unmap_sg+0xb0/0x118
[1274934.746891] IAOQ[1]: sba_unmap_sg+0xb4/0x118
[1274934.746891] RP(r2): sba_unmap_sg+0xac/0x118
[1274934.746891] Backtrace:
[1274934.746891] [<00000000402740cc>] dma_unmap_sg_attrs+0x6c/0x70
[1274934.746891] [<000000004074d6bc>] scsi_dma_unmap+0x54/0x60
[1274934.746891] [<00000000407a3488>] mptscsih_io_done+0x150/0xd70
[1274934.746891] [<0000000040798600>] mpt_interrupt+0x168/0xa68
[1274934.746891] [<0000000040255a48>] __handle_irq_event_percpu+0xc8/0x278
[1274934.746891] [<0000000040255c34>] handle_irq_event_percpu+0x3c/0xd8
[1274934.746891] [<000000004025ecb4>] handle_percpu_irq+0xb4/0xf0
[1274934.746891] [<00000000402548e0>] generic_handle_irq+0x50/0x70
[1274934.746891] [<000000004019a254>] call_on_stack+0x18/0x24
[1274934.746891]
[1274934.746891] Kernel panic - not syncing: Bad Address (null pointer deref?)
The bug is caused by overrunning the sglist and incorrectly testing
sg_dma_len(sglist) before nents. Normally this doesn't cause a crash,
but in this case sglist crossed a page boundary. This occurs in the
following code:
while (sg_dma_len(sglist) && nents--) {
The fix is simply to test nents first and move the decrement of nents
into the loop.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 5.17 | |
| linux | linux_kernel | 5.17 | |
| linux | linux_kernel | 5.17 | |
| linux | linux_kernel | 5.17 |
{
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{
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{
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"product": "Linux",
"programFiles": [
"drivers/parisc/sba_iommu.c"
],
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"vendor": "Linux",
"versions": [
{
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"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
},
{
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},
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"versionType": "git"
},
{
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{
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{
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}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/parisc/sba_iommu.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.12"
},
{
"lessThan": "2.6.12",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"version": "4.9.303",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.268",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.231",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.181",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.102",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.25",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.16.*",
"status": "unaffected",
"version": "5.16.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
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"negate": false,
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: Fix data TLB miss in sba_unmap_sg\n\nRolf Eike Beer reported the following bug:\n\n[1274934.746891] Bad Address (null pointer deref?): Code=15 (Data TLB miss fault) at addr 0000004140000018\n[1274934.746891] CPU: 3 PID: 5549 Comm: cmake Not tainted 5.15.4-gentoo-parisc64 #4\n[1274934.746891] Hardware name: 9000/785/C8000\n[1274934.746891]\n[1274934.746891] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI\n[1274934.746891] PSW: 00001000000001001111111000001110 Not tainted\n[1274934.746891] r00-03 000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000\n[1274934.746891] r04-07 0000000040b693c0 0000004140000000 000000004a2b08b0 0000000000000001\n[1274934.746891] r08-11 0000000041f98810 0000000000000000 000000004a0a7000 0000000000000001\n[1274934.746891] r12-15 0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0\n[1274934.746891] r16-19 0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007\n[1274934.746891] r20-23 0000000000000006 000000004a368950 0000000000000000 0000000000000001\n[1274934.746891] r24-27 0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0\n[1274934.746891] r28-31 0000000000000001 0000000041f988b0 0000000041f98840 000000004a171118\n[1274934.746891] sr00-03 00000000066e5800 0000000000000000 0000000000000000 00000000066e5800\n[1274934.746891] sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000\n[1274934.746891]\n[1274934.746891] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000406760e8 00000000406760ec\n[1274934.746891] IIR: 48780030 ISR: 0000000000000000 IOR: 0000004140000018\n[1274934.746891] CPU: 3 CR30: 00000040e3a9c000 CR31: ffffffffffffffff\n[1274934.746891] ORIG_R28: 0000000040acdd58\n[1274934.746891] IAOQ[0]: sba_unmap_sg+0xb0/0x118\n[1274934.746891] IAOQ[1]: sba_unmap_sg+0xb4/0x118\n[1274934.746891] RP(r2): sba_unmap_sg+0xac/0x118\n[1274934.746891] Backtrace:\n[1274934.746891] [\u003c00000000402740cc\u003e] dma_unmap_sg_attrs+0x6c/0x70\n[1274934.746891] [\u003c000000004074d6bc\u003e] scsi_dma_unmap+0x54/0x60\n[1274934.746891] [\u003c00000000407a3488\u003e] mptscsih_io_done+0x150/0xd70\n[1274934.746891] [\u003c0000000040798600\u003e] mpt_interrupt+0x168/0xa68\n[1274934.746891] [\u003c0000000040255a48\u003e] __handle_irq_event_percpu+0xc8/0x278\n[1274934.746891] [\u003c0000000040255c34\u003e] handle_irq_event_percpu+0x3c/0xd8\n[1274934.746891] [\u003c000000004025ecb4\u003e] handle_percpu_irq+0xb4/0xf0\n[1274934.746891] [\u003c00000000402548e0\u003e] generic_handle_irq+0x50/0x70\n[1274934.746891] [\u003c000000004019a254\u003e] call_on_stack+0x18/0x24\n[1274934.746891]\n[1274934.746891] Kernel panic - not syncing: Bad Address (null pointer deref?)\n\nThe bug is caused by overrunning the sglist and incorrectly testing\nsg_dma_len(sglist) before nents. Normally this doesn\u0027t cause a crash,\nbut in this case sglist crossed a page boundary. This occurs in the\nfollowing code:\n\n\twhile (sg_dma_len(sglist) \u0026\u0026 nents--) {\n\nThe fix is simply to test nents first and move the decrement of nents\ninto the loop."
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: parisc: corregir la falta de TLB de datos en sba_unmap_sg Rolf Eike Beer inform\u00f3 el siguiente error: [1274934.746891] Direcci\u00f3n incorrecta (\u00bfpuntero nulo deref?): C\u00f3digo = 15 (falla de falta de TLB de datos) en direcci\u00f3n 0000004140000018 [1274934.746891] CPU: 3 PID: 5549 Comunicaciones: cmake No contaminado 5.15.4-gentoo-parisc64 #4 [1274934.746891] Nombre de hardware: 9000/785/C8000 [1274934.746891 ] [1274934.746891] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [1274934.746891] PSW: 000010000000010011111111000001110 No contaminado [1274934.746891] r00-03 000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000 [1274934.746891] r04-07 0b693c0 0000004140000000 000000004a2b08b0 0000000000000001 [1274934.746891] r08-11 0000000041f98810 0000000000000000 00000000 4a0a7000 0000000000000001 [1274934.746891] r12-15 0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0 [1274934.746891 ] r16-19 0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007 [1274934.746891] r20-23 0000000000000006 000000004a368950 0000000000000000 0000000000000001 [1274934.746891 ] r24-27 0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0 [1274934.746891] r28-31 0000000000000001 00000000 41f988b0 0000000041f98840 000000004a171118 [1274934.746891] sr00-03 00000000066e5800 0000000000000000 0000000000000000 000000 00066e5800 [1274934.746891] sr04-07 0000000000000000 0000000000000000 00000000000000000 0000000000000000 [1274934.746891] [1274934.746891] IASQ: 0000000000000000 00000000000000000 IAOQ: 00000000406760e8 00000000406760 ec [1274934.746891] IIR: 48780030 ISR: 0000000000000000 IOR: 0000004140000018 [1274934.746891] CPU: 3 CR30: 00000040e3a9c000 CR31: 1274934.746891] ORIG_R28: 0000000040acdd58 [1274934.746891] IAOQ[ 0]: sba_unmap_sg+0xb0/0x118 [1274934.746891] IAOQ[1]: sba_unmap_sg+0xb4/0x118 [1274934.746891] RP(r2): sba_unmap_sg+0xac/0x118 [1274934.746891] seguimiento: [1274934.746891] [\u0026lt;00000000402740cc\u0026gt;] dma_unmap_sg_attrs+0x6c /0x70 [1274934.746891] [\u0026lt;000000004074d6bc\u0026gt;] scsi_dma_unmap+0x54/0x60 [1274934.746891] [\u0026lt;00000000407a3488\u0026gt;] mptscsih_io_done+0x150/0xd70 4.746891] [\u0026lt;0000000040798600\u0026gt;] mpt_interrupt+0x168/0xa68 [1274934.746891] [\u0026lt;0000000040255a48\u0026gt;] __handle_irq_event_percpu +0xc8/0x278 [1274934.746891] [\u0026lt;0000000040255c34\u0026gt;] handle_irq_event_percpu+0x3c/0xd8 [1274934.746891] [\u0026lt;000000004025ecb4\u0026gt;] handle_percpu_irq+0xb4/0xf0 [1 274934.746891] [\u0026lt;00000000402548e0\u0026gt;] generic_handle_irq+0x50/0x70 [1274934.746891] [\u0026lt;000000004019a254\u0026gt; ] call_on_stack+0x18/0x24 [1274934.746891] [1274934.746891] P\u00e1nico del kernel - no se sincroniza: Direcci\u00f3n incorrecta (\u00bfpuntero nulo deref?) El error se debe a que se sobrepasa sglist y se prueba incorrectamente sg_dma_len(sglist) antes de nents. Normalmente esto no causa un bloqueo, pero en este caso sglist cruz\u00f3 el l\u00edmite de una p\u00e1gina. Esto ocurre en el siguiente c\u00f3digo: while (sg_dma_len(sglist) \u0026amp;\u0026amp; nents--) { La soluci\u00f3n es simplemente probar nents primero y mover la disminuci\u00f3n de nents al bucle."
}
],
"id": "CVE-2022-48795",
"lastModified": "2026-06-17T05:16:12.833",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2022-48795",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T16:59:22.558593Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-07-16T12:15:04.220",
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"url": "https://git.kernel.org/stable/c/8c8e949ae81e7f5ab58f9f9f8e9b573b93173dd2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b7d6f44a0fa716a82969725516dc0b16bc7cd514"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/de75676ee99bf9f25b1124ff301b3f7b8ba597d4"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/e40ae3133ed87d6d526f3c8fc6a5f9a2d72dcdbf"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/efccc9b0c7e28d0eb7918a236e59f60dc23db4c3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/f23f0444ead4d941165aa82ce2fcbb997dc00e97"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/f8f519d7df66c334b5e08f896ac70ee3b53add3b"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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