CVE-2022-50844 (GCVE-0-2022-50844)
Vulnerability from cvelistv5 – Published: 2025-12-30 12:11 – Updated: 2025-12-30 12:11
VLAI?
Title
drm/amdgpu: Fix type of second parameter in odn_edit_dpm_table() callback
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: Fix type of second parameter in odn_edit_dpm_table() callback
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:
drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:3008:29: error: incompatible function pointer types initializing 'int (*)(void *, uint32_t, long *, uint32_t)' (aka 'int (*)(void *, unsigned int, long *, unsigned int)') with an expression of type 'int (void *, enum PP_OD_DPM_TABLE_COMMAND, long *, uint32_t)' (aka 'int (void *, enum PP_OD_DPM_TABLE_COMMAND, long *, unsigned int)') [-Werror,-Wincompatible-function-pointer-types-strict]
.odn_edit_dpm_table = smu_od_edit_dpm_table,
^~~~~~~~~~~~~~~~~~~~~
1 error generated.
There are only two implementations of ->odn_edit_dpm_table() in 'struct
amd_pm_funcs': smu_od_edit_dpm_table() and pp_odn_edit_dpm_table(). One
has a second parameter type of 'enum PP_OD_DPM_TABLE_COMMAND' and the
other uses 'u32'. Ultimately, smu_od_edit_dpm_table() calls
->od_edit_dpm_table() from 'struct pptable_funcs' and
pp_odn_edit_dpm_table() calls ->odn_edit_dpm_table() from 'struct
pp_hwmgr_func', which both have a second parameter type of 'enum
PP_OD_DPM_TABLE_COMMAND'.
Update the type parameter in both the prototype in 'struct amd_pm_funcs'
and pp_odn_edit_dpm_table() to 'enum PP_OD_DPM_TABLE_COMMAND', which
cleans up the warning.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9606bbc271ac86c266d1f4a0285dd69b3fda2d0f
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f9084e9930db562bdcd47fa199a66fb45e16dab5 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 24cba9d865157c9e23128fbcf8b86f5da9570edd (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 36217f676b55932a12d6732c95388150015fdee6 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e4d0ef752081e7aa6ffb7ccac11c499c732a2e05 (git) |
||
{
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"programFiles": [
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"drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c"
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.163",
"versionType": "semver"
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{
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"status": "unaffected",
"version": "5.15.86",
"versionType": "semver"
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{
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"status": "unaffected",
"version": "6.0.16",
"versionType": "semver"
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{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.2",
"versionType": "original_commit_for_fix"
}
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}
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Fix type of second parameter in odn_edit_dpm_table() callback\n\nWith clang\u0027s kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),\nindirect call targets are validated against the expected function\npointer prototype to make sure the call target is valid to help mitigate\nROP attacks. If they are not identical, there is a failure at run time,\nwhich manifests as either a kernel panic or thread getting killed. A\nproposed warning in clang aims to catch these at compile time, which\nreveals:\n\n drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:3008:29: error: incompatible function pointer types initializing \u0027int (*)(void *, uint32_t, long *, uint32_t)\u0027 (aka \u0027int (*)(void *, unsigned int, long *, unsigned int)\u0027) with an expression of type \u0027int (void *, enum PP_OD_DPM_TABLE_COMMAND, long *, uint32_t)\u0027 (aka \u0027int (void *, enum PP_OD_DPM_TABLE_COMMAND, long *, unsigned int)\u0027) [-Werror,-Wincompatible-function-pointer-types-strict]\n .odn_edit_dpm_table = smu_od_edit_dpm_table,\n ^~~~~~~~~~~~~~~~~~~~~\n 1 error generated.\n\nThere are only two implementations of -\u003eodn_edit_dpm_table() in \u0027struct\namd_pm_funcs\u0027: smu_od_edit_dpm_table() and pp_odn_edit_dpm_table(). One\nhas a second parameter type of \u0027enum PP_OD_DPM_TABLE_COMMAND\u0027 and the\nother uses \u0027u32\u0027. Ultimately, smu_od_edit_dpm_table() calls\n-\u003eod_edit_dpm_table() from \u0027struct pptable_funcs\u0027 and\npp_odn_edit_dpm_table() calls -\u003eodn_edit_dpm_table() from \u0027struct\npp_hwmgr_func\u0027, which both have a second parameter type of \u0027enum\nPP_OD_DPM_TABLE_COMMAND\u0027.\n\nUpdate the type parameter in both the prototype in \u0027struct amd_pm_funcs\u0027\nand pp_odn_edit_dpm_table() to \u0027enum PP_OD_DPM_TABLE_COMMAND\u0027, which\ncleans up the warning."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-30T12:11:01.928Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"references": [
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"url": "https://git.kernel.org/stable/c/9606bbc271ac86c266d1f4a0285dd69b3fda2d0f"
},
{
"url": "https://git.kernel.org/stable/c/f9084e9930db562bdcd47fa199a66fb45e16dab5"
},
{
"url": "https://git.kernel.org/stable/c/24cba9d865157c9e23128fbcf8b86f5da9570edd"
},
{
"url": "https://git.kernel.org/stable/c/36217f676b55932a12d6732c95388150015fdee6"
},
{
"url": "https://git.kernel.org/stable/c/e4d0ef752081e7aa6ffb7ccac11c499c732a2e05"
}
],
"title": "drm/amdgpu: Fix type of second parameter in odn_edit_dpm_table() callback",
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"cveId": "CVE-2022-50844",
"datePublished": "2025-12-30T12:11:01.928Z",
"dateReserved": "2025-12-30T12:06:07.133Z",
"dateUpdated": "2025-12-30T12:11:01.928Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
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"nvd": "{\"cve\":{\"id\":\"CVE-2022-50844\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:15:59.013\",\"lastModified\":\"2025-12-31T20:43:05.160\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amdgpu: Fix type of second parameter in odn_edit_dpm_table() callback\\n\\nWith clang\u0027s kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),\\nindirect call targets are validated against the expected function\\npointer prototype to make sure the call target is valid to help mitigate\\nROP attacks. If they are not identical, there is a failure at run time,\\nwhich manifests as either a kernel panic or thread getting killed. A\\nproposed warning in clang aims to catch these at compile time, which\\nreveals:\\n\\n drivers/gpu/drm/amd/amdgpu/../pm/swsmu/amdgpu_smu.c:3008:29: error: incompatible function pointer types initializing \u0027int (*)(void *, uint32_t, long *, uint32_t)\u0027 (aka \u0027int (*)(void *, unsigned int, long *, unsigned int)\u0027) with an expression of type \u0027int (void *, enum PP_OD_DPM_TABLE_COMMAND, long *, uint32_t)\u0027 (aka \u0027int (void *, enum PP_OD_DPM_TABLE_COMMAND, long *, unsigned int)\u0027) [-Werror,-Wincompatible-function-pointer-types-strict]\\n .odn_edit_dpm_table = smu_od_edit_dpm_table,\\n ^~~~~~~~~~~~~~~~~~~~~\\n 1 error generated.\\n\\nThere are only two implementations of -\u003eodn_edit_dpm_table() in \u0027struct\\namd_pm_funcs\u0027: smu_od_edit_dpm_table() and pp_odn_edit_dpm_table(). One\\nhas a second parameter type of \u0027enum PP_OD_DPM_TABLE_COMMAND\u0027 and the\\nother uses \u0027u32\u0027. Ultimately, smu_od_edit_dpm_table() calls\\n-\u003eod_edit_dpm_table() from \u0027struct pptable_funcs\u0027 and\\npp_odn_edit_dpm_table() calls -\u003eodn_edit_dpm_table() from \u0027struct\\npp_hwmgr_func\u0027, which both have a second parameter type of \u0027enum\\nPP_OD_DPM_TABLE_COMMAND\u0027.\\n\\nUpdate the type parameter in both the prototype in \u0027struct amd_pm_funcs\u0027\\nand pp_odn_edit_dpm_table() to \u0027enum PP_OD_DPM_TABLE_COMMAND\u0027, which\\ncleans up the warning.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/24cba9d865157c9e23128fbcf8b86f5da9570edd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/36217f676b55932a12d6732c95388150015fdee6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9606bbc271ac86c266d1f4a0285dd69b3fda2d0f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4d0ef752081e7aa6ffb7ccac11c499c732a2e05\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f9084e9930db562bdcd47fa199a66fb45e16dab5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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