7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
0.974 High
EPSS
Percentile
99.9%
This kernel-linus update is based on the upstream 4.14.127 and fixes at least the following security issues: Jonathan Looney discovered that it is possible to send a crafted sequence of SACKs which will fragment the RACK send map. An attacker may be able to further exploit the fragmented send map to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection (CVE-2019-5599). A flaw was found in the Linux kernel’s freescale hypervisor manager implementation. A parameter passed via to an ioctl was incorrectly validated and used in size calculations for the page size calculation. An attacker can use this flaw to crash the system or corrupt memory or, possibly, create other adverse security affects (CVE-2019-10142). Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service (CVE-2019-11477). Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service (CVE-2019-11478). Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more than if a larger MSS were enforced. A remote attacker could use this to cause a denial of service (CVE-2019-11479). fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem (CVE-2019-11833). It also fixes an upstream regression that caused older ‘legacy’ bluetooth adapters to stop working (mga #24840). For other uptstream fixes in this update, see the referenced changelogs.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Mageia | 6 | noarch | kernel-linus | < 4.14.127-1 | kernel-linus-4.14.127-1.mga6 |
bugs.mageia.org/show_bug.cgi?id=24840
bugs.mageia.org/show_bug.cgi?id=24974
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.120
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.121
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.122
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.123
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.124
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.125
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.126
cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.127
github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
0.974 High
EPSS
Percentile
99.9%