CVE-2018-12232

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Summary

CVECVE-2018-12232
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-06-12 12:29:00 UTC
Updated2018-10-31 10:30:00 UTC
DescriptionIn net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.

Risk And Classification

Problem Types: CWE-362

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

References

ReferenceSourceLinkTags
Linux Kernel CVE-2018-12232 Local Denial of Service Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
USN-3752-1: Linux kernel vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com
USN-3752-2: Linux kernel (HWE) vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com
[net] socket: close race condition between sock_close() and sockfs_setattr() - Patchwork MISC patchwork.ozlabs.org Patch, Third Party Advisory
LKML: shankarapailoor: general protection fault in sockfs_setattr MISC lkml.org Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree MISC git.kernel.org Patch, Third Party Advisory
socket: close race condition between sock_close() and sockfs_setattr() · torvalds/linux@6d8c50d · GitHub MISC github.com Patch, Third Party Advisory
USN-3752-3: Linux kernel (Azure, GCP, OEM) vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com
Red Hat Customer Portal REDHAT access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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