CVE-2017-14954

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-02 · updated 2026-06-17
Weakness: CWE-200

Description

The waitid implementation in kernel/exit.c in the Linux kernel through 4.13.4 accesses rusage data structures in unintended cases, which allows local users to obtain sensitive information, and bypass the KASLR protection mechanism, via a crafted system call.

Affected products

Linux kernel: through 4.13.4

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6c85501f2fabcfc4fc6ed976543d252c4eaf4be9
https://github.com/torvalds/linux/commit/6c85501f2fabcfc4fc6ed976543d252c4eaf4be9
https://grsecurity.net/~spender/exploits/wait_for_kaslr_to_be_effective.c
https://twitter.com/_argp/status/914021130712870912
https://twitter.com/grsecurity/status/914079864478666753
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6c85501f2fabcfc4fc6ed976543d252c4eaf4be9
https://github.com/torvalds/linux/commit/6c85501f2fabcfc4fc6ed976543d252c4eaf4be9
https://grsecurity.net/~spender/exploits/wait_for_kaslr_to_be_effective.c
https://twitter.com/_argp/status/914021130712870912
https://twitter.com/grsecurity/status/914079864478666753

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