CVE-2022-49650 (GCVE-0-2022-49650)
Vulnerability from cvelistv5
Published
2025-02-26 02:23
Modified
2025-05-04 08:42
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: qcom: bam_dma: fix runtime PM underflow
Commit dbad41e7bb5f ("dmaengine: qcom: bam_dma: check if the runtime pm enabled")
caused unbalanced pm_runtime_get/put() calls when the bam is
controlled remotely. This commit reverts it and just enables pm_runtime
in all cases, the clk_* functions already just nop when the clock is NULL.
Also clean up a bit by removing unnecessary bamclk null checks.
References
Impacted products
{
"containers": {
"cna": {
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"product": "Linux",
"programFiles": [
"drivers/dma/qcom/bam_dma.c"
],
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"vendor": "Linux",
"versions": [
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"versionType": "git"
}
]
},
{
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"programFiles": [
"drivers/dma/qcom/bam_dma.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.17"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.15.54",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.18.*",
"status": "unaffected",
"version": "5.18.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.19",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
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},
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: qcom: bam_dma: fix runtime PM underflow\n\nCommit dbad41e7bb5f (\"dmaengine: qcom: bam_dma: check if the runtime pm enabled\")\ncaused unbalanced pm_runtime_get/put() calls when the bam is\ncontrolled remotely. This commit reverts it and just enables pm_runtime\nin all cases, the clk_* functions already just nop when the clock is NULL.\n\nAlso clean up a bit by removing unnecessary bamclk null checks."
}
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"url": "https://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12"
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"url": "https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96"
},
{
"url": "https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e"
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],
"title": "dmaengine: qcom: bam_dma: fix runtime PM underflow",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-49650",
"datePublished": "2025-02-26T02:23:53.006Z",
"dateReserved": "2025-02-26T02:21:30.433Z",
"dateUpdated": "2025-05-04T08:42:34.836Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2022-49650\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:40.150\",\"lastModified\":\"2025-02-26T07:01:40.150\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndmaengine: qcom: bam_dma: fix runtime PM underflow\\n\\nCommit dbad41e7bb5f (\\\"dmaengine: qcom: bam_dma: check if the runtime pm enabled\\\")\\ncaused unbalanced pm_runtime_get/put() calls when the bam is\\ncontrolled remotely. This commit reverts it and just enables pm_runtime\\nin all cases, the clk_* functions already just nop when the clock is NULL.\\n\\nAlso clean up a bit by removing unnecessary bamclk null checks.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dmaengine: qcom: bam_dma: fix runtime PM underflow El commit dbad41e7bb5f (\\\"dmaengine: qcom: bam_dma: check if the runtime pm enabled\\\") caus\u00f3 llamadas pm_runtime_get/put() desequilibradas cuando el bam se controla de forma remota. Este commit lo revierte y simplemente habilita pm_runtime en todos los casos, las funciones clk_* ya simplemente dejan de funcionar cuando el reloj es NULL. Tambi\u00e9n limpie un poco eliminando las comprobaciones nulas innecesarias de bamclk.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0ac9c3dd0d6fe293cd5044cfad10bec27d171e4e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2f6ded79068cac8cff41d5d5632564165d98ee12\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b702a1077b51fcb39507cc3bd39206f539319a96\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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