CVE-2017-7979
Summary
| CVE | CVE-2017-7979 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-04-19 23:59:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.0 7.8 HIGH from [email protected]
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-20 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 7.8 | HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:L/AC:L/Au:N/C:C/I:C/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | 4.11 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 4.11 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 4.11 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 4.11 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 4.11 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 4.11 | rc6 | All | All |
| Operating System | Linux | Linux Kernel | 4.11 | rc7 | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| '[RFC PATCH linux 0/2] net sched actions: access to uninitialized data and error handling' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | Mailing List, Patch, Third Party Advisory |
| Bug #1682368 “refcount underflow / kernel NULL dereference after...” : Bugs : linux package : Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | bugs.launchpad.net | Issue Tracking, Patch |
| Linux Kernel CVE-2017-7979 Local Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| '[PATCH linux 1/2] net sched actions: fix access to uninitialized data' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | Mailing List, Patch, Third Party Advisory |
| '[PATCH v2 net 1/2] net sched actions: fix access to uninitialized data' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | Mailing List, Patch, Third Party Advisory |
| '[PATCH v2 net 2/2] net sched actions: decrement module refcount earlier' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | Mailing List, Patch, Third Party Advisory |
| '[PATCH linux 2/2] net sched actions: fix refcount decrement on error' - MARC | af854a3a-2127-422b-91ae-364da2661108 | marc.info | Mailing List, Patch, Third Party Advisory |
| 1351 – VM not start if use network rate limit (like 12.5) | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.proxmox.com | Issue Tracking, Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.