CVE-2021-46966
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-46966
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46966.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-46966
- Related
- Published
- 2024-02-27T19:04:07Z
- Modified
- 2024-09-18T01:00:22Z
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ACPI: custom_method: fix potential use-after-free issue
In cmwrite(), buf is always freed when reaching the end of the function. If the requested count is less than table.length, the allocated buffer will be freed but subsequent calls to cmwrite() will still try to access it.
Remove the unconditional kfree(buf) at the end of the function and set the buf to NULL in the -EINVAL error path to match the rest of function.
- References
-
- https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394
- https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203
- https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b
- https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be
- https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23
- https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17
- https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234
- https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa
- https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b
- https://security-tracker.debian.org/tracker/CVE-2021-46966
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source