CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
10.1%
The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel
before 4.3.4 does not properly use a semaphore, which allows local users to
cause a denial of service (NULL pointer dereference and system crash) or
possibly have unspecified other impact via a crafted application that
leverages a race condition between keyctl_revoke and keyctl_read calls.
Author | Note |
---|---|
jdstrand | android kernels (flo, goldfish, grouper, maguro, mako and manta) are not supported on the Ubuntu Touch 14.10 and earlier preview kernels linux-lts-saucy no longer receives official support linux-lts-quantal no longer receives official support |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 12.04 | noarch | linux | < 3.2.0-99.139 | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < 3.13.0-79.123 | UNKNOWN |
ubuntu | 15.04 | noarch | linux | < 3.19.0-51.57 | UNKNOWN |
ubuntu | 15.10 | noarch | linux | < 4.2.0-27.32 | UNKNOWN |
ubuntu | 12.04 | noarch | linux-armadaxp | < 3.2.0-1662.86 | UNKNOWN |
ubuntu | 12.04 | noarch | linux-lts-trusty | < 3.13.0-79.123~precise1 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-lts-utopic | < 3.16.0-60.80~14.04.1 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-lts-vivid | < 3.19.0-51.57~14.04.1 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-lts-wily | < 4.2.0-27.32~14.04.1 | UNKNOWN |
ubuntu | 15.10 | noarch | linux-raspi2 | < 4.2.0-1022.29 | UNKNOWN |
git.kernel.org/linus/b4a1b4f5047e4f54e194681125c74c0aa64d637d
launchpad.net/bugs/cve/CVE-2015-7550
nvd.nist.gov/vuln/detail/CVE-2015-7550
security-tracker.debian.org/tracker/CVE-2015-7550
ubuntu.com/security/notices/USN-2888-1
ubuntu.com/security/notices/USN-2890-1
ubuntu.com/security/notices/USN-2890-2
ubuntu.com/security/notices/USN-2890-3
ubuntu.com/security/notices/USN-2907-1
ubuntu.com/security/notices/USN-2907-2
ubuntu.com/security/notices/USN-2910-1
ubuntu.com/security/notices/USN-2911-1
ubuntu.com/security/notices/USN-2911-2
www.cve.org/CVERecord?id=CVE-2015-7550
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
10.1%