vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-47086): Linux kernel vulnerabilities
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Mar 4, 2024 | Nov 19, 2024 | Jan 30, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Mar 4, 2024
Added
Nov 19, 2024
Modified
Jan 30, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
phonet/pep: refuse to enable an unbound pipe
This ioctl() implicitly assumed that the socket was already bound to
a valid local socket name, i.e. Phonet object. If the socket was not
bound, two separate problems would occur:
1) We'd send an pipe enablement request with an invalid source object.
2) Later socket calls could BUG on the socket unexpectedly being
connected yet not bound to a valid object.
Solution(s)
ubuntu-upgrade-linux-image-4-4-0-1139-awsubuntu-upgrade-linux-image-4-4-0-1140-kvmubuntu-upgrade-linux-image-4-4-0-1177-awsubuntu-upgrade-linux-image-4-4-0-262-genericubuntu-upgrade-linux-image-4-4-0-262-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-lts-xenial
References
- CVE-2021-47086
- https://attackerkb.com/topics/CVE-2021-47086
- UBUNTU-USN-7183-1
- UBUNTU-USN-7184-1
- URL-https://git.kernel.org/linus/75a2f31520095600f650597c0ac41f48b5ba0068
- URL-https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59
- URL-https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161
- URL-https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b
- URL-https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52
- URL-https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa
- URL-https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068
- URL-https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235
- URL-https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2aca
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47086

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