# RHSA-2026:27731: kernel security update

RHSA-2026:27731, released March 12, 2026, fixes 14 CVEs in kernel (version 6.12.0-55.82.1.el10_0). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-27731
- Platform: Linux
- Released: Mar 12, 2026
- Priority: Urgent (Closes CVE-2026-45898, rated Critical)
- CVEs: 14, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:27731

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | RHEL 10 | 6.12.0-55.82.1.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-45898](https://patchblox.com/security/data/cve/CVE-2026-45898.md) | Urgent | linux: In the Linux kernel, the following vulnerability has been resolved:  RDMA/iwcm: Fix workqueue list corruption by remo... | 9.8 | 0.0053 |  |
| [CVE-2026-43501](https://patchblox.com/security/data/cve/CVE-2026-43501.md) | High | ipv6: rpl: reserve mac_len headroom when recompressed SRH grows | 9.8 | 0.0073 |  |
| [CVE-2025-40135](https://patchblox.com/security/data/cve/CVE-2025-40135.md) | High | ipv6: use RCU in ip6_xmit() | 8.4 | 0.0071 |  |
| [CVE-2026-46331](https://patchblox.com/security/data/cve/CVE-2026-46331.md) | High | net/sched: fix pedit partial COW leading to page cache corruption | 8.1 | 0.0064 |  |
| [CVE-2025-40158](https://patchblox.com/security/data/cve/CVE-2025-40158.md) | High | ipv6: use RCU in ip6_output() | 8.1 | 0.0056 |  |
| [CVE-2026-46125](https://patchblox.com/security/data/cve/CVE-2026-46125.md) | High | wifi: mac80211: remove station if connection prep fails | 8.8 | 0.0030 |  |
| [CVE-2026-23136](https://patchblox.com/security/data/cve/CVE-2026-23136.md) | High | linux: In the Linux kernel, the following vulnerability has been resolved:  libceph: reset sparse-read state in osd_fault()... | 8.1 | 0.0025 |  |
| [CVE-2025-40170](https://patchblox.com/security/data/cve/CVE-2025-40170.md) | High | net: use dst_dev_rcu() in sk_setup_caps() | 8.1 | 0.0019 |  |
| [CVE-2025-38154](https://patchblox.com/security/data/cve/CVE-2025-38154.md) | High | kernel-64kb: The SUSE Linux Enterprise 15 SP7 kernel was updated to receive various security bugfixes.  The following security bug... | 7.8 | 0.0019 |  |
| [CVE-2026-46323](https://patchblox.com/security/data/cve/CVE-2026-46323.md) | High | net: gro: don't merge zcopy skbs | 8.4 | 0.0014 |  |
| [CVE-2026-46227](https://patchblox.com/security/data/cve/CVE-2026-46227.md) | High | sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL | 8.4 | 0.0010 |  |
| [CVE-2026-31474](https://patchblox.com/security/data/cve/CVE-2026-31474.md) | High | can: isotp: fix tx.buf use-after-free in isotp_sendmsg() | 7.8 | 0.0010 |  |
| [CVE-2026-43116](https://patchblox.com/security/data/cve/CVE-2026-43116.md) | High | netfilter: ctnetlink: ensure safe access to master conntrack | 8.8 | 0.0010 |  |
| [CVE-2025-30156](https://patchblox.com/security/data/cve/CVE-2025-30156.md) | High | Ceph: AES-CBC misuse in CephX and RADOSGW enables authentication bypass and credential forgery | 8.9 | 0.0009 |  |

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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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