# CVE-2021-33909: kernel-core: The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: s...

CVE-2021-33909 is fixed in 50 products on 1 platform, first by RHSA-2021:2714, released July 20, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-33909
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0981
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 20, 2021

## Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)  * kernel: race condition for removal of the HCI controller (CVE-2021-32399)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Bug Fix(es):  * pinctrl_emmitsburg: improper configuration (BZ#1963984)  * [Ampere] locking/qrwlock: Fix ordering in queued_write_lock_slowpath (BZ#1964419)  * RHEL8.4 - [P10] [NPIV Multi queue Test kernel- 4.18.0-283.el8.ibmvfc_11022021.ppc64le] DLPAR operation fails for ibmvfc on Denali (ibmvfc/dlpar/RHEL8.4) (BZ#1964697)  * Every server is displaying the same power levels for all of our i40e  25G interfaces. 10G interfaces seem to be correct. Ethtool version is 5.0 (BZ#1967099)  * backport fixes for Connection Tracking offload (BZ#1968679)  * fm10k: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969910)  * ixgbevf: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969911)  * ena: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969913)  * b44, bnx2, bnx2x, bnxt, tg3: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969914)  * e1000, e1000e: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969915)  * ice: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969917)  * igb: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969919)  * igbvf: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969920)  * igc: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969921)  * ixgbe: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969922)  * i40e: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969923)  * iavf: removal of MODULE_VERSION deemed improper for y-stream release (BZ#1969925)  * Backport netlink extack tracepoint (BZ#1972938)  * [RHEL8.4] kernel panic when create NPIV port on qedf driver (BZ#1974968)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | bpftool ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-abi-stablelists RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-abi-stablelists ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-core RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-core ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-cross-headers ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-debug RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-debug ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-debug-core RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-debug-core ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-debug-devel RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-debug-devel ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-debug-modules RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-debug-modules ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-debug-modules-extra RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-debug-modules-extra ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-devel RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-devel ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-doc RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-doc ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-headers ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-modules RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-modules ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-modules-extra RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-modules-extra ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-rt RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-core RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-debug RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-debug-core RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-debug-devel RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-debug-kvm RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-debug-modules RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-debug-modules-extra RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-devel RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-kvm RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-modules RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-rt-modules-extra RHEL 8 | 0:4.18.0-305.10.2.rt7.83.el8_4 | [RHSA-2021:2715](https://patchblox.com/security/data/fix/linux/rhsa-2021-2715.md) | Jul 20, 2021 |
| Linux | kernel-tools RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-tools ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-tools-libs RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-tools-libs ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-tools-libs-devel RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-tools-libs-devel ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |
| Linux | kernel-uek ol 8 | 0:5.4.17-2102.204.4.2.el8uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | kernel-uek-container ol 8 | 0:5.4.17-2102.204.4.2.el8 | [ELSA-2021-9406](https://patchblox.com/security/data/fix/linux/elsa-2021-9406.md) | Aug 10, 2021 |
| Linux | kernel-uek-container-debug ol 8 | 0:5.4.17-2102.204.4.2.el8 | [ELSA-2021-9406](https://patchblox.com/security/data/fix/linux/elsa-2021-9406.md) | Aug 10, 2021 |
| Linux | kernel-uek-debug ol 8 | 0:5.4.17-2102.204.4.2.el8uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.4.17-2102.204.4.2.el8uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | kernel-uek-devel ol 8 | 0:5.4.17-2102.204.4.2.el8uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | kernel-uek-doc ol 8 | 0:5.4.17-2102.204.4.2.el8uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | kernel-uek-tools ol 8 | 0:5.4.17-2102.204.4.2.el7uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | kernel-uek-tools-libs ol 8 | 0:5.4.17-2102.204.4.2.el7uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | kernel-zfcpdump RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-zfcpdump-core RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-zfcpdump-devel RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-zfcpdump-modules RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kernel-zfcpdump-modules-extra RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | kpatch-patch-4_18_0-305 RHEL 8 | 0:1-3.el8 | [RHSA-2021:2716](https://patchblox.com/security/data/fix/linux/rhsa-2021-2716.md) | Jul 21, 2021 |
| Linux | kpatch-patch-4_18_0-305_3_1 RHEL 8 | 0:1-2.el8_4 | [RHSA-2021:2716](https://patchblox.com/security/data/fix/linux/rhsa-2021-2716.md) | Jul 21, 2021 |
| Linux | kpatch-patch-4_18_0-305_7_1 RHEL 8 | 0:1-1.el8_4 | [RHSA-2021:2716](https://patchblox.com/security/data/fix/linux/rhsa-2021-2716.md) | Jul 21, 2021 |
| Linux | perf RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | perf ol 8 | 0:5.4.17-2102.204.4.2.el7uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | python-perf ol 8 | 0:5.4.17-2102.204.4.2.el7uek | [ELSA-2021-9404](https://patchblox.com/security/data/fix/linux/elsa-2021-9404.md) | Aug 10, 2021 |
| Linux | python3-perf RHEL 8 | 0:4.18.0-305.10.2.el8_4 | [RHSA-2021:2714](https://patchblox.com/security/data/fix/linux/rhsa-2021-2714.md) | Jul 20, 2021 |
| Linux | python3-perf ol 8 | 0:4.18.0-305.10.2.el8_4 | [ELSA-2021-2714](https://patchblox.com/security/data/fix/linux/elsa-2021-2714.md) | Jul 21, 2021 |

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