CVE-2021-47086
phonet/pep: refuse to enable an unbound pipe
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.3
References 8
git.kernel.org
- stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59
- stable/c/b10c7d745615a092a50c2e03ce70446d2bec2aca
- stable/c/311601f114859d586d5ef8833d60d3aa23282161
- stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235
- stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b
- stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52
- stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa
- stable/c/75a2f31520095600f650597c0ac41f48b5ba0068