Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.4.297 |
References
- https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59Patch
- https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161Patch
- https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0bPatch
- https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52Patch
- https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafaPatch
- https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068Patch
- https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235Patch
- https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2acaPatch
- https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59Patch
- https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161Patch
- https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0bPatch
- https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52Patch
- https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafaPatch
- https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068Patch
- https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235Patch
FAQ
What is CVE-2021-47086?
CVE-2021-47086 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 so...
How severe is CVE-2021-47086?
CVE-2021-47086 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47086?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.