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": { "cve.org": { "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" }, { "lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.19", "versionType": "custom" }, { "lessThanOrEqual": "6.7.*", "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" }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/2d623c94fbba3554f4446ba6f3c764994e8b0d26" }, { "name": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/673629018ba04906899dcb631beec34d871f709c" }, { "name": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/19a77b27163820f793b4d022979ffdca8f659b77" }, { "name": "https://git.kernel.org/stable/c/e169bd4fb2b36c4b2bee63c35c740c85daeb2e86", "refsource": "MISC", "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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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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