# RHSA-2026:88477: kernel security update

RHSA-2026:88477, released September 24, 2026, fixes 18 CVEs in kernel (version 6.12.0-211.68.1.el10_2). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-88477
- Platform: Linux
- Released: Sep 24, 2026
- Priority: Urgent (Closes CVE-2026-68236, rated Critical)
- CVEs: 18, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:88477

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-211.68.1.el10_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-68236](https://patchblox.com/security/data/cve/CVE-2026-68236.md) | Urgent | drm/amd/display: set new_stream to NULL after release | 9.8 | 0.0013 |  |
| [CVE-2026-80590](https://patchblox.com/security/data/cve/CVE-2026-80590.md) | High | inet: frags: strip GSO state from fragments before reassembly | 8.8 | 0.0058 |  |
| [CVE-2026-64048](https://patchblox.com/security/data/cve/CVE-2026-64048.md) | High | python3-perf: The kernel packages contain the Linux kernel, the core of any Linux operating system.  Security Fix(es):  * kernel: n... | 7.8 | 0.0050 |  |
| [CVE-2026-68278](https://patchblox.com/security/data/cve/CVE-2026-68278.md) | High | drm/dp/mst: fix buffer overflows in sideband chunk accumulation | 8.1 | 0.0024 |  |
| [CVE-2025-38147](https://patchblox.com/security/data/cve/CVE-2025-38147.md) | High | calipso: Don't call calipso functions for AF_INET sk. | 7.8 | 0.0023 |  |
| [CVE-2026-64572](https://patchblox.com/security/data/cve/CVE-2026-64572.md) | High | ipv4: fib: free fib_alias with kfree_rcu() on insert error path | 8.8 | 0.0020 |  |
| [CVE-2026-89791](https://patchblox.com/security/data/cve/CVE-2026-89791.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved:  perf: Fix use-after-free when perf mmap() reviva... | 7.8 | 0.0018 |  |
| [CVE-2026-68202](https://patchblox.com/security/data/cve/CVE-2026-68202.md) | High | ALSA: seq: close a re-opened queue timer in the destructor | 7.8 | 0.0018 |  |
| [CVE-2026-64481](https://patchblox.com/security/data/cve/CVE-2026-64481.md) | High | ALSA: hda/cs35l41: Fix firmware load work teardown | 7.8 | 0.0018 |  |
| [CVE-2026-89811](https://patchblox.com/security/data/cve/CVE-2026-89811.md) | High | drm/amdkfd: Add TLB flush after MES queue eviction/suspension | 8.8 | 0.0018 |  |
| [CVE-2026-97493](https://patchblox.com/security/data/cve/CVE-2026-97493.md) | High | drm/amdgpu: Bound GPIO I2C table entry count from VBIOS | 7.8 | 0.0017 |  |
| [CVE-2026-80887](https://patchblox.com/security/data/cve/CVE-2026-80887.md) | High | drm/vmwgfx: use check_add_overflow for shader size+offset bound | 8.1 | 0.0017 |  |
| [CVE-2026-68448](https://patchblox.com/security/data/cve/CVE-2026-68448.md) | High | ovl: check access to copy_file_range source with src mounter creds | 7.8 | 0.0016 |  |
| [CVE-2026-80536](https://patchblox.com/security/data/cve/CVE-2026-80536.md) | High | xfs: bounds-check buffer log item's dirty bitmap | 8.4 | 0.0014 |  |
| [CVE-2026-64114](https://patchblox.com/security/data/cve/CVE-2026-64114.md) | High | kernel: The kernel packages contain the Linux kernel, the core of any Linux operating system | 8.8 | 0.0014 |  |
| [CVE-2026-68245](https://patchblox.com/security/data/cve/CVE-2026-68245.md) | High | drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid() | 7.8 | 0.0013 |  |
| [CVE-2026-93817](https://patchblox.com/security/data/cve/CVE-2026-93817.md) | High | perf: Fix addr_filter_ranges lifetime | 8.8 | 0.0013 |  |
| [CVE-2026-64266](https://patchblox.com/security/data/cve/CVE-2026-64266.md) | High | fuse: re-lock request before returning from fuse_ref_folio() | 7.8 | 0.0013 |  |

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Data as of 2026-11-07T18:46:35Z 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

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