CVE-2017-7979
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
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
EPSS
Percentile
5.1%
The cookie feature in the packet action API implementation in net/sched/act_api.c in the Linux kernel 4.11.x through 4.11-rc7 mishandles the tb nlattr array, which allows local users to cause a denial of service (uninitialized memory access and refcount underflow, and system hang or crash) or possibly have unspecified other impact via “tc filter add” commands in certain contexts. NOTE: this does not affect stable kernels, such as 4.10.x, from kernel.org.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| linux | linux_kernel | 4.11 | cpe:2.3:o:linux:linux_kernel:4.11:rc1:*:*:*:*:*:* |
| linux | linux_kernel | 4.11 | cpe:2.3:o:linux:linux_kernel:4.11:rc2:*:*:*:*:*:* |
| linux | linux_kernel | 4.11 | cpe:2.3:o:linux:linux_kernel:4.11:rc3:*:*:*:*:*:* |
| linux | linux_kernel | 4.11 | cpe:2.3:o:linux:linux_kernel:4.11:rc4:*:*:*:*:*:* |
| linux | linux_kernel | 4.11 | cpe:2.3:o:linux:linux_kernel:4.11:rc5:*:*:*:*:*:* |
| linux | linux_kernel | 4.11 | cpe:2.3:o:linux:linux_kernel:4.11:rc6:*:*:*:*:*:* |
| linux | linux_kernel | 4.11 | cpe:2.3:o:linux:linux_kernel:4.11:rc7:*:*:*:*:*:* |
References
marc.info/?l=linux-netdev&m=149200742616349
marc.info/?l=linux-netdev&m=149200746116365
marc.info/?l=linux-netdev&m=149200746116366
marc.info/?l=linux-netdev&m=149251041420194
marc.info/?l=linux-netdev&m=149251041420195
www.securityfocus.com/bid/97969
bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368
bugzilla.proxmox.com/show_bug.cgi?id=1351
Related
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
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
EPSS
Percentile
5.1%