CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
5.1%
In the Linux kernel, the following vulnerability has been resolved:
media: pvrusb2: fix use after free on context disconnection
Upon module load, a kthread is created targeting the
pvr2_context_thread_func function, which may call pvr2_context_destroy
and thus call kfree() on the context object. However, that might happen
before the usb hub_event handler is able to notify the driver. This
patch adds a sanity check before the invalid read reported by syzbot,
within the context disconnection call stack.
Vendor | Product | Version | CPE |
---|---|---|---|
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/media/usb/pvrusb2/pvrusb2-context.c"
],
"versions": [
{
"version": "e5be15c63804",
"lessThan": "ec36c134dd02",
"status": "affected",
"versionType": "git"
},
{
"version": "e5be15c63804",
"lessThan": "47aa8fcd5e8b",
"status": "affected",
"versionType": "git"
},
{
"version": "e5be15c63804",
"lessThan": "3233d8bf7893",
"status": "affected",
"versionType": "git"
},
{
"version": "e5be15c63804",
"lessThan": "ec3634ebe23f",
"status": "affected",
"versionType": "git"
},
{
"version": "e5be15c63804",
"lessThan": "30773ea47d41",
"status": "affected",
"versionType": "git"
},
{
"version": "e5be15c63804",
"lessThan": "2cf0005d3155",
"status": "affected",
"versionType": "git"
},
{
"version": "e5be15c63804",
"lessThan": "437b5f57732b",
"status": "affected",
"versionType": "git"
},
{
"version": "e5be15c63804",
"lessThan": "ded85b0c0edd",
"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/media/usb/pvrusb2/pvrusb2-context.c"
],
"versions": [
{
"version": "2.6.26",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.26",
"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": "6.1.75",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.14",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.7.2",
"lessThanOrEqual": "6.7.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.8",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/2cf0005d315549b8d2b940ff96a66c2a889aa795
git.kernel.org/stable/c/30773ea47d41773f9611ffb4ebc9bda9d19a9e7e
git.kernel.org/stable/c/3233d8bf7893550045682192cb227af7fa3defeb
git.kernel.org/stable/c/437b5f57732bb4cc32cc9f8895d2010ee9ff521c
git.kernel.org/stable/c/47aa8fcd5e8b5563af4042a00f25ba89bef8f33d
git.kernel.org/stable/c/ded85b0c0edd8f45fec88783d7555a5b982449c1
git.kernel.org/stable/c/ec3634ebe23fc3c44ebc67c6d25917300bc68c08
git.kernel.org/stable/c/ec36c134dd020d28e312c2f1766f85525e747aab
lists.debian.org/debian-lts-announce/2024/06/msg00016.html
lists.debian.org/debian-lts-announce/2024/06/msg00020.html