Vulnerability CVE-2019-7308
Published: 2019-02-01

Description:
kernel/bpf/verifier.c in the Linux kernel before 4.20.6 performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different state or limits to sanitize, leading to side-channel attacks.

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:L/AC:M/Au:N/C:C/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.7/10
6.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
None
None
Affected software
Opensuse -> LEAP 
Linux -> Linux kernel 
Canonical -> Ubuntu linux 

 References:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=979d63d50c0c0f7bc537bf821e056cc9fe5abd38
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d3bd7413e0ca40b60cf60d4003246d067cafdeda
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html
http://www.securityfocus.com/bid/106827
https://bugs.chromium.org/p/project-zero/issues/detail?id=1711
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.6
https://github.com/torvalds/linux/commit/979d63d50c0c0f7bc537bf821e056cc9fe5abd38
https://github.com/torvalds/linux/commit/d3bd7413e0ca40b60cf60d4003246d067cafdeda
https://support.f5.com/csp/article/K43030517
https://usn.ubuntu.com/3930-1/
https://usn.ubuntu.com/3930-2/
https://usn.ubuntu.com/3931-1/
https://usn.ubuntu.com/3931-2/
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