CVE-2017-17864
low
CVSS v3
3.3
CVSS v2
2.1
VIR risk
3.3
Description
kernel/bpf/verifier.c in the Linux kernel through 4.14.8 mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."
Predictions
Exploit likelihood
34%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-17864
Vendor advisory: arch — https://security.archlinux.org/ASA-201801-1
Vendor advisory: arch — https://security.archlinux.org/ASA-201801-2
Vendor advisory: arch — https://security.archlinux.org/ASA-201801-3
Vendor advisory: arch — https://security.archlinux.org/ASA-201801-4
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 4.14.11.a-1 | |
| debian | bookworm | fixed | 4.14.7-1 |
| debian | bullseye | fixed | 4.14.7-1 |
| debian | forky | fixed | 4.14.7-1 |
| debian | sid | fixed | 4.14.7-1 |
| debian | trixie | fixed | 4.14.7-1 |
| linux-kernel | affected | | |
| debian | 9.0 | affected | |
References
- https://security.archlinux.org/ASA-201801-4
- https://security.archlinux.org/ASA-201801-3
- https://security.archlinux.org/ASA-201801-2
- https://security.archlinux.org/ASA-201801-1
- http://www.securityfocus.com/bid/102320
- http://www.securitytracker.com/id/1040059
- https://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security&id=ad775f6ff7eebb93eedc2f592bc974260e7757b0
- https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-verifier-fix-states_equal-comparison-of-pointer-and-unknown.patch?h=stretch-security
- https://usn.ubuntu.com/usn/usn-3523-2/
- https://www.debian.org/security/2017/dsa-4073
- https://security-tracker.debian.org/tracker/CVE-2017-17864
CWEs
CWE-200
Verify integrity in audit chain (admin only). AS-IS.