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 Details
- CVSS 3.0 Base Score: 7.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-image-genericUpgrade linux-image-lowlatencyUpgrade linux-image-generic-lpaeUpgrade linux-image-4.10.0-22-genericUpgrade linux-image-4.10.0-1006-raspi2Upgrade linux-image-4.10.0-22-lowlatencyUpgrade linux-image-4.10.0-22-generic-lpaeUpgrade linux-image-raspi2 | Jun 8, 2017 | Apr 19, 2017 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 19, 2017 |
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