In the Linux kernel, the following vulnerability has been resolved:
regmap: set debugfs_name to NULL after it is freed
There is a upstream commit cffa4b2122f5(“regmap:debugfs:
Fix a memory leak when calling regmap_attach_dev”) that
adds a if condition when create name for debugfs_name.
With below function invoking logical, debugfs_name is
freed in regmap_debugfs_exit(), but it is not created again
because of the if condition introduced by above commit.
regmap_reinit_cache()
regmap_debugfs_exit()
…
regmap_debugfs_init()
So, set debugfs_name to NULL after it is freed.
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/base/regmap/regmap-debugfs.c"
],
"versions": [
{
"version": "5b654b030079",
"lessThan": "2dc1554d5f0f",
"status": "affected",
"versionType": "git"
},
{
"version": "480c5e9c7e4c",
"lessThan": "d8897f7b2283",
"status": "affected",
"versionType": "git"
},
{
"version": "c9698380b01a",
"lessThan": "eb949f891226",
"status": "affected",
"versionType": "git"
},
{
"version": "cffa4b2122f5",
"lessThan": "c764e375ae64",
"status": "affected",
"versionType": "git"
},
{
"version": "cffa4b2122f5",
"lessThan": "b9e569ae1da3",
"status": "affected",
"versionType": "git"
},
{
"version": "cffa4b2122f5",
"lessThan": "e41a962f82e7",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/base/regmap/regmap-debugfs.c"
],
"versions": [
{
"version": "5.11",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.11",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.191",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.119",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.37",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.11.21",
"lessThanOrEqual": "5.11.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.12.4",
"lessThanOrEqual": "5.12.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.13",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867
git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a
git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d
git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52
git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268
git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6