# RLSA-2026:85321: kernel security update

RLSA-2026:85321, released November 7, 2026, fixes 17 CVEs in kernel (version 0:6.12.0-211.67.1.el10_2). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rlsa-2026-85321
- Platform: Linux
- Released: Nov 7, 2026
- Priority: Urgent (Closes CVE-2026-89633, rated Critical)
- CVEs: 17, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://errata.rockylinux.org/RLSA-2026:85321

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | rocky 10 | 0:6.12.0-211.67.1.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-89633](https://patchblox.com/security/data/cve/CVE-2026-89633.md) | Urgent | linux: In the Linux kernel, the following vulnerability has been resolved:  smb: client: fix OOB read/write from unvalidated... | 9.8 | 0.0055 |  |
| [CVE-2026-89631](https://patchblox.com/security/data/cve/CVE-2026-89631.md) | Urgent | smb: client: reject a tree connect response whose byte count is too small | 9.1 | 0.0049 |  |
| [CVE-2026-68300](https://patchblox.com/security/data/cve/CVE-2026-68300.md) | High | sctp: auth: verify auth requirement when auth_chunk is NULL | 9.8 | 0.0058 |  |
| [CVE-2026-68117](https://patchblox.com/security/data/cve/CVE-2026-68117.md) | High | tipc: clear sock->sk on the failed-insert path in tipc_sk_create() | 9.8 | 0.0053 |  |
| [CVE-2026-74752](https://patchblox.com/security/data/cve/CVE-2026-74752.md) | High | sctp: validate cookie AUTH state before use | 9.8 | 0.0052 |  |
| [CVE-2026-63801](https://patchblox.com/security/data/cve/CVE-2026-63801.md) | High | tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done | 8.8 | 0.0051 |  |
| [CVE-2026-68315](https://patchblox.com/security/data/cve/CVE-2026-68315.md) | High | sctp: validate stream count in sctp_process_strreset_inreq() | 8.8 | 0.0051 |  |
| [CVE-2026-74588](https://patchblox.com/security/data/cve/CVE-2026-74588.md) | High | sctp: keep chunk->transport in step with the list it is queued on | 9.8 | 0.0050 |  |
| [CVE-2026-74509](https://patchblox.com/security/data/cve/CVE-2026-74509.md) | High | Bluetooth: hci_sync: Fix advertising data UAFs | 8.8 | 0.0025 |  |
| [CVE-2026-68162](https://patchblox.com/security/data/cve/CVE-2026-68162.md) | High | sctp: avoid auth_enable sysctl UAF during netns teardown | 8.8 | 0.0020 |  |
| [CVE-2026-98260](https://patchblox.com/security/data/cve/CVE-2026-98260.md) | High | exec: Cleanup POSIX timers right after de_thread() | 8.8 | 0.0019 |  |
| [CVE-2026-63962](https://patchblox.com/security/data/cve/CVE-2026-63962.md) | High | usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() | 8.8 | 0.0016 |  |
| [CVE-2026-98256](https://patchblox.com/security/data/cve/CVE-2026-98256.md) | High | signal: Prevent exec() race | 8.8 | 0.0014 |  |
| [CVE-2026-31678](https://patchblox.com/security/data/cve/CVE-2026-31678.md) | High | openvswitch: defer tunnel netdev_put to RCU release | 8.8 | 0.0013 |  |
| [CVE-2026-63971](https://patchblox.com/security/data/cve/CVE-2026-63971.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0013 |  |
| [CVE-2026-52917](https://patchblox.com/security/data/cve/CVE-2026-52917.md) | High | sctp: diag: reject stale associations in dump_one path | 8.8 | 0.0013 |  |
| [CVE-2026-52935](https://patchblox.com/security/data/cve/CVE-2026-52935.md) | High | xfrm: espintcp: do not reuse an in-progress partial send | 8.8 | 0.0010 |  |

---

Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.