| Vulnerability Name: | CVE-2017-7979 (CCN-125075) | ||||||||||||||||||||
| Assigned: | 2017-04-13 | ||||||||||||||||||||
| Published: | 2017-04-13 | ||||||||||||||||||||
| Updated: | 2017-04-26 | ||||||||||||||||||||
| Summary: | 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. | ||||||||||||||||||||
| CVSS v3 Severity: | 7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) 6.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)
5.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
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| CVSS v2 Severity: | 7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
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| Vulnerability Type: | CWE-20 | ||||||||||||||||||||
| Vulnerability Consequences: | Denial of Service | ||||||||||||||||||||
| References: | Source: MITRE Type: CNA CVE-2017-7979 Source: MISC Type: Mailing List, Patch, Third Party Advisory http://marc.info/?l=linux-netdev&m=149200742616349 Source: MISC Type: Mailing List, Patch, Third Party Advisory http://marc.info/?l=linux-netdev&m=149200746116365 Source: MISC Type: Mailing List, Patch, Third Party Advisory http://marc.info/?l=linux-netdev&m=149200746116366 Source: MISC Type: Mailing List, Patch, Third Party Advisory http://marc.info/?l=linux-netdev&m=149251041420194 Source: MISC Type: Mailing List, Patch, Third Party Advisory http://marc.info/?l=linux-netdev&m=149251041420195 Source: BID Type: UNKNOWN 97969 Source: CCN Type: BID-97969 Linux Kernel CVE-2017-7979 Local Denial of Service Vulnerability Source: CCN Type: Launchpad Bug #1682368 refcount underflow / kernel NULL dereference after attempting to add basic tc filter Source: MISC Type: Issue Tracking, Patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368 Source: MISC Type: Issue Tracking, Patch https://bugzilla.proxmox.com/show_bug.cgi?id=1351 Source: XF Type: UNKNOWN linux-kernel-cve20177979-dos(125075) Source: CCN Type: Linux Kernel Web site The Linux Kernel Archives | ||||||||||||||||||||
| Vulnerable Configuration: | Configuration 1: Configuration CCN 1:  Denotes that component is vulnerable | ||||||||||||||||||||
| Oval Definitions | |||||||||||||||||||||
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