In the Linux kernel, the following vulnerability has been resolved:
uio: Fix use-after-free in uio_open
In the core-1 uio_unregister_device(), the device_unregister will kfree
idev when the idev->dev kobject ref is 1. But after core-1
device_unregister, put_device and before doing kfree, the core-2 may
get_device. Then:
To address this issue, we can get idev atomic & inc idev reference with
minor_lock.
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/uio/uio.c"
],
"versions": [
{
"version": "57c5f4df0a5a",
"lessThan": "3174e0f7de1b",
"status": "affected",
"versionType": "git"
},
{
"version": "57c5f4df0a5a",
"lessThan": "e93da893d52d",
"status": "affected",
"versionType": "git"
},
{
"version": "57c5f4df0a5a",
"lessThan": "5e0be1229ae1",
"status": "affected",
"versionType": "git"
},
{
"version": "57c5f4df0a5a",
"lessThan": "5cf604ee538e",
"status": "affected",
"versionType": "git"
},
{
"version": "57c5f4df0a5a",
"lessThan": "17a8519cb359",
"status": "affected",
"versionType": "git"
},
{
"version": "57c5f4df0a5a",
"lessThan": "35f102607054",
"status": "affected",
"versionType": "git"
},
{
"version": "57c5f4df0a5a",
"lessThan": "913205930da6",
"status": "affected",
"versionType": "git"
},
{
"version": "57c5f4df0a5a",
"lessThan": "0c9ae0b86050",
"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/uio/uio.c"
],
"versions": [
{
"version": "4.18",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.18",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.306",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.268",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.209",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.148",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.1.74",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.13",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.7.1",
"lessThanOrEqual": "6.7.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.8",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2
git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea
git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c
git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad
git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7
git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570
git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41
git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50
lists.debian.org/debian-lts-announce/2024/06/msg00016.html
lists.debian.org/debian-lts-announce/2024/06/msg00020.html