gsd-2024-26775
Vulnerability from gsd
Modified
2024-02-20 06:02
Details
In the Linux kernel, the following vulnerability has been resolved:
aoe: avoid potential deadlock at set_capacity
Move set_capacity() outside of the section procected by (&d->lock).
To avoid possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
[1] lock(&bdev->bd_size_lock);
local_irq_disable();
[2] lock(&d->lock);
[3] lock(&bdev->bd_size_lock);
<Interrupt>
[4] lock(&d->lock);
*** DEADLOCK ***
Where [1](&bdev->bd_size_lock) hold by zram_add()->set_capacity().
[2]lock(&d->lock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc()
is trying to acquire [3](&bdev->bd_size_lock) at set_capacity() call.
In this situation an attempt to acquire [4]lock(&d->lock) from
aoecmd_cfg_rsp() will lead to deadlock.
So the simplest solution is breaking lock dependency
[2](&d->lock) -> [3](&bdev->bd_size_lock) by moving set_capacity()
outside.
Aliases
{
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2024-26775"
],
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\naoe: avoid potential deadlock at set_capacity\n\nMove set_capacity() outside of the section procected by (\u0026d-\u003elock).\nTo avoid possible interrupt unsafe locking scenario:\n\n CPU0 CPU1\n ---- ----\n[1] lock(\u0026bdev-\u003ebd_size_lock);\n local_irq_disable();\n [2] lock(\u0026d-\u003elock);\n [3] lock(\u0026bdev-\u003ebd_size_lock);\n \u003cInterrupt\u003e\n[4] lock(\u0026d-\u003elock);\n\n *** DEADLOCK ***\n\nWhere [1](\u0026bdev-\u003ebd_size_lock) hold by zram_add()-\u003eset_capacity().\n[2]lock(\u0026d-\u003elock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc()\nis trying to acquire [3](\u0026bdev-\u003ebd_size_lock) at set_capacity() call.\nIn this situation an attempt to acquire [4]lock(\u0026d-\u003elock) from\naoecmd_cfg_rsp() will lead to deadlock.\n\nSo the simplest solution is breaking lock dependency\n[2](\u0026d-\u003elock) -\u003e [3](\u0026bdev-\u003ebd_size_lock) by moving set_capacity()\noutside.",
"id": "GSD-2024-26775",
"modified": "2024-02-20T06:02:29.272286Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"CVE_data_meta": {
"ASSIGNER": "cve@kernel.org",
"ID": "CVE-2024-26775",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Linux",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "1da177e4c3f4",
"version_value": "2d623c94fbba"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"defaultStatus": "affected",
"versions": [
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.80",
"versionType": "custom"
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{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.19",
"versionType": "custom"
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{
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"status": "unaffected",
"version": "6.7.7",
"versionType": "custom"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.8",
"versionType": "original_commit_for_fix"
}
]
}
}
]
}
}
]
},
"vendor_name": "Linux"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\naoe: avoid potential deadlock at set_capacity\n\nMove set_capacity() outside of the section procected by (\u0026d-\u003elock).\nTo avoid possible interrupt unsafe locking scenario:\n\n CPU0 CPU1\n ---- ----\n[1] lock(\u0026bdev-\u003ebd_size_lock);\n local_irq_disable();\n [2] lock(\u0026d-\u003elock);\n [3] lock(\u0026bdev-\u003ebd_size_lock);\n \u003cInterrupt\u003e\n[4] lock(\u0026d-\u003elock);\n\n *** DEADLOCK ***\n\nWhere [1](\u0026bdev-\u003ebd_size_lock) hold by zram_add()-\u003eset_capacity().\n[2]lock(\u0026d-\u003elock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc()\nis trying to acquire [3](\u0026bdev-\u003ebd_size_lock) at set_capacity() call.\nIn this situation an attempt to acquire [4]lock(\u0026d-\u003elock) from\naoecmd_cfg_rsp() will lead to deadlock.\n\nSo the simplest solution is breaking lock dependency\n[2](\u0026d-\u003elock) -\u003e [3](\u0026bdev-\u003ebd_size_lock) by moving set_capacity()\noutside."
}
]
},
"generator": {
"engine": "bippy-d3b290d2becc"
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"problemtype": {
"problemtype_data": [
{
"description": [
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"lang": "eng",
"value": "n/a"
}
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}
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"references": {
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"name": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26"
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{
"name": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c",
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"url": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c"
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"name": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77"
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{
"name": "https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86",
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"url": "https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86"
}
]
}
},
"nvd.nist.gov": {
"cve": {
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\naoe: avoid potential deadlock at set_capacity\n\nMove set_capacity() outside of the section procected by (\u0026d-\u003elock).\nTo avoid possible interrupt unsafe locking scenario:\n\n CPU0 CPU1\n ---- ----\n[1] lock(\u0026bdev-\u003ebd_size_lock);\n local_irq_disable();\n [2] lock(\u0026d-\u003elock);\n [3] lock(\u0026bdev-\u003ebd_size_lock);\n \u003cInterrupt\u003e\n[4] lock(\u0026d-\u003elock);\n\n *** DEADLOCK ***\n\nWhere [1](\u0026bdev-\u003ebd_size_lock) hold by zram_add()-\u003eset_capacity().\n[2]lock(\u0026d-\u003elock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc()\nis trying to acquire [3](\u0026bdev-\u003ebd_size_lock) at set_capacity() call.\nIn this situation an attempt to acquire [4]lock(\u0026d-\u003elock) from\naoecmd_cfg_rsp() will lead to deadlock.\n\nSo the simplest solution is breaking lock dependency\n[2](\u0026d-\u003elock) -\u003e [3](\u0026bdev-\u003ebd_size_lock) by moving set_capacity()\noutside."
}
],
"id": "CVE-2024-26775",
"lastModified": "2024-04-03T17:24:18.150",
"metrics": {},
"published": "2024-04-03T17:15:53.187",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
}
}
}
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