vulnerability
Ubuntu: (CVE-2021-47289): linux-gkeop vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | May 21, 2024 | Nov 19, 2024 | Oct 29, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
May 21, 2024
Added
Nov 19, 2024
Modified
Oct 29, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
ACPI: fix NULL pointer dereference
Commit 71f642833284 ("ACPI: utils: Fix reference counting in
for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer
that was possibly NULL. That fails miserably, because that helper
inline function is not set up to handle that case.
Just make acpi_dev_put() silently accept a NULL pointer, rather than
calling down to put_device() with an invalid offset off that NULL
pointer.
Solution
ubuntu-upgrade-linux-gkeop
References
- CVE-2021-47289
- https://attackerkb.com/topics/CVE-2021-47289
- CWE-476
- URL-https://git.kernel.org/linus/fc68f42aa737dc15e7665a4101d4168aadb8e4c4
- URL-https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e
- URL-https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc
- URL-https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4
- URL-https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47289
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