CVE-2017-5550

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-02-06 · updated 2026-06-17
Weakness: CWE-200

Description

Off-by-one error in the pipe_advance function in lib/iov_iter.c in the Linux kernel before 4.9.5 allows local users to obtain sensitive information from uninitialized heap-memory locations in opportunistic circumstances by reading from a pipe after an incorrect buffer-release decision.

Affected products

Linux kernel: through 4.9.4

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5
http://www.openwall.com/lists/oss-security/2017/01/21/3
http://www.securityfocus.com/bid/95716
https://bugzilla.redhat.com/show_bug.cgi?id=1416116
https://github.com/torvalds/linux/commit/b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5
http://www.openwall.com/lists/oss-security/2017/01/21/3
http://www.securityfocus.com/bid/95716
https://bugzilla.redhat.com/show_bug.cgi?id=1416116
https://github.com/torvalds/linux/commit/b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb

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