Vulnerability · Published Jul 19, 2026 · Assigned by Linux

CVE-2026-64015security/keys: fix missed RCU read section on lookup

High 7.8

In plain English

A high-severity race condition in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 95.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: security/keys: fix missed RCU read section on lookup Nicholas Carlini reports that the keyring code calls assoc_array_find() in find_key_to_update() without holding the RCU read lock, while the assoc_array_gc() code really is designed around removing the node from the tree and then freeing it after an RCU grace-period. The regular key handling doesn't see this because holding the keyring semaphore hides any lifetime issues, but the persistent key handling uses a different model. Instead of extending the keyring locking, just do the simple RCU locking that the assoc_array was designed for.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:10kernel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-debug5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-debug-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-debug-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-debug-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-64k-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-abi-stablelists6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-abi-stablelists4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-abi-stablelists5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-core4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-cross-headers6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-cross-headers4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-cross-headers5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-debug4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-debug5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-debug-core4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-debug-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-debug-devel4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-debug-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-debug-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-debug-modules4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-debug-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-debug-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-debug-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-uki-virt6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-debug-uki-virt5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-devel4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-doc6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-doc4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-doc5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-headers6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-headers4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-headers5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-modules4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-modules-extra4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-modules-extra-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-debug5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-debug-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-debug-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-debug-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-debug-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-debug-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-64k-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-core4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-debug4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-debug5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-debug-core4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-debug-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-debug-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-debug-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-devel4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-modules4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-rt-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.162.1.rt7.503.el8_10ALSA-2026:66324
AlmaLinux:9kernel-rt-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-tools6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-tools4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-tools5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-tools-libs6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-tools-libs4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-tools-libs5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-tools-libs-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-tools-libs-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-uki-virt6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-uki-virt5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-uki-virt-addons6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-uki-virt-addons5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-zfcpdump4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-zfcpdump5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-zfcpdump-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-zfcpdump-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-zfcpdump-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10libperf6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9libperf5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10perf6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8perf4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9perf5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10python3-perf6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:8python3-perf4.18.0-553.162.1.el8_10ALSA-2026:66325
AlmaLinux:9python3-perf5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10rtla6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9rtla5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10rv6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:9rv5.14.0-687.48.1.el9_8ALSA-2026:67470
Debian:12linux6.1.176-1DEBIAN-CVE-2026-64015
Debian:13linux6.12.94-1DEBIAN-CVE-2026-64015
Debian:14linux7.0.12-1DEBIAN-CVE-2026-64015
Rocky Linux:10kernel0:6.12.0-211.53.1.el10_2RLSA-2026:65334
Rocky Linux:8kernel0:4.18.0-553.162.1.el8_10RLSA-2026:66325
Rocky Linux:9kernel0:5.14.0-687.48.1.el9_8RLSA-2026:67470
Rocky Linux:8kernel-rt0:4.18.0-553.162.1.rt7.503.el8_10RLSA-2026:66324
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-64015
Ubuntu:24.04:LTSlinux6.8.0-139.139USN-8729-1
Ubuntu:24.04:LTSlinux6.8.0-139.139UBUNTU-CVE-2026-64015
Ubuntu:26.04:LTSlinux7.0.0-28.28UBUNTU-CVE-2026-64015
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-64015
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-64015
Ubuntu:24.04:LTSlinux-aws6.8.0-1064.67USN-8729-6
Ubuntu:24.04:LTSlinux-aws6.8.0-1064.67UBUNTU-CVE-2026-64015
Ubuntu:26.04:LTSlinux-aws7.0.0-1009.9UBUNTU-CVE-2026-64015

Affected products (as reported)

VendorProductVersions
Linux Linux b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 – before 1d8d987a2aacde238ecd0f4946f28cef74c42b79b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 – before 5036a9aa7f21fbce89a2a8451bbc177bae2e920db2a4df200d570b2c33a57e1ebfa5896e4bc81b69 – before 4c5d407ba3ff7f30561ff73ba1b07ed70c864edcb2a4df200d570b2c33a57e1ebfa5896e4bc81b69 – before cefa4265b11176c897a7d9e8e54d89e3701c5584b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 – before 5659e6923cb72f8e18e8b539109ab512455fe195b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 – before 50bb3435a5e627bfbdc52eb4536f49f88b3486b8b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 – before 66288dcadf80974436250e9f70ed848836b835b5b2a4df200d570b2c33a57e1ebfa5896e4bc81b69 – before 43a1e3744548e6fd85873e6fb43e293eb4010694
Linux Linux 3.13

Weakness: CWE-362 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References