CVE-2021-47086

phonet/pep: refuse to enable an unbound pipe

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.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.01%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59	patch
https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2aca	patch
https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161	patch
https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235	patch
https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b	patch
https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52	patch
https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa	patch
https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068	patch

Frequently Asked Questions

What is the severity of CVE-2021-47086?: CVE-2021-47086 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47086?: To fix CVE-2021-47086, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47086 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-47086 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47086?: CVE-2021-47086 affects Linux Linux, Linux Linux.

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