UBUNTU-CVE-2021-47086
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.
02 / AFFECTED SOFTWARE
Affected packages
12 explicit affected versions
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26 explicit affected versions
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1 explicit affected versions
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10 explicit affected versions
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32 explicit affected versions
10 explicit affected versions
12 explicit affected versions
31 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
37 explicit affected versions
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34 explicit affected versions
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34 explicit affected versions
43 explicit affected versions
1 explicit affected versions
126 explicit affected versions
103 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
35 explicit affected versions
4 explicit affected versions
23 explicit affected versions
1 explicit affected versions
10 explicit affected versions
50 explicit affected versions
6 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/75a2f31520095600f650597c0ac41f48b5ba0068
- https://git.kernel.org/stable/c/0bbdd62ce9d44f3a22059b3d20a0df977d9f6d59
- https://git.kernel.org/stable/c/311601f114859d586d5ef8833d60d3aa23282161
- https://git.kernel.org/stable/c/48c76fc53582e7f13c1e0b11c916e503256c4d0b
- https://git.kernel.org/stable/c/52ad5da8e316fa11e3a50b3f089aa63e4089bf52
- https://git.kernel.org/stable/c/53ccdc73eedaf0e922c45b569b797d2796fbaafa
- https://git.kernel.org/stable/c/75a2f31520095600f650597c0ac41f48b5ba0068
- https://git.kernel.org/stable/c/982b6ba1ce626ef87e5c29f26f2401897554f235
- https://git.kernel.org/stable/c/b10c7d745615a092a50c2e03ce70446d2bec2aca
- https://ubuntu.com/security/CVE-2021-47086
- https://ubuntu.com/security/notices/USN-7183-1
- https://ubuntu.com/security/notices/USN-7184-1
- https://www.cve.org/CVERecord?id=CVE-2021-47086