CVE-2017-7979
Ubuntu Security Notice USN-3314-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
La característica cookie en la implementación del paquete de acción API en net/sched/act_api.c en el kernel de Linux 4.11.x hasta la versión 4.11-rc7 no maneja adecuadamente el array tb nlattr, lo que permite a usuarios locales provocar una denegación de servicio (acceso a memoria no inicializado y desbordamiento inferior de conteo de referencias y cuelgue o caída de sistema) o posiblemente tener otro impacto no especificado a través de comandos "tc filter add" en ciertos contextos. NOTA: esto no afecta a kernels estables, como 4.10.x, de kernel.org.
It was discovered that the keyring implementation in the Linux kernel in some situations did not prevent special internal keyrings from being joined by userspace keyrings. A privileged local attacker could use this to bypass module verification. It was discovered that a buffer overflow existed in the trace subsystem in the Linux kernel. A privileged local attacker could use this to execute arbitrary code. Various other issues were also addressed.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2017-04-19 CVE Reserved
- 2017-04-19 CVE Published
- 2024-08-05 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
CAPEC
References (8)
URL | Tag | Source |
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http://www.securityfocus.com/bid/97969 | Vdb Entry |
URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
http://marc.info/?l=linux-netdev&m=149200742616349 | 2017-04-26 | |
http://marc.info/?l=linux-netdev&m=149200746116365 | 2017-04-26 | |
http://marc.info/?l=linux-netdev&m=149200746116366 | 2017-04-26 | |
http://marc.info/?l=linux-netdev&m=149251041420194 | 2017-04-26 | |
http://marc.info/?l=linux-netdev&m=149251041420195 | 2017-04-26 | |
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368 | 2017-04-26 | |
https://bugzilla.proxmox.com/show_bug.cgi?id=1351 | 2017-04-26 |
URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11" | rc1 |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11" | rc2 |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11" | rc3 |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11" | rc4 |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11" | rc5 |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11" | rc6 |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.11 Search vendor "Linux" for product "Linux Kernel" and version "4.11" | rc7 |
Affected
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