# RLSA-2026:19568: kernel security update

RLSA-2026:19568, released May 28, 2026, fixes 17 CVEs in kernel (version 0:5.14.0-687.10.1.el9_8.0.1). One of them is being exploited (CVE-2026-46300); 1 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/linux/rlsa-2026-19568
- Platform: Linux
- Released: May 28, 2026
- Priority: Patch now (Closes CVE-2026-46300, exploited (CISA KEV))
- CVEs: 17, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://errata.rockylinux.org/RLSA-2026:19568

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [kernel](https://patchblox.com/security/data/product/linux/kernel.md) | rocky 9 | 0:5.14.0-687.10.1.el9_8.0.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-46300](https://patchblox.com/security/data/cve/CVE-2026-46300.md) | Patch now | net: skbuff: preserve shared-frag marker during coalescing | 8.1 | 0.1613 | CISA KEV |
| [CVE-2025-68741](https://patchblox.com/security/data/cve/CVE-2025-68741.md) | Urgent | linux: In the Linux kernel, the following vulnerability has been resolved:  scsi: qla2xxx: Fix improper freeing of purex ite... | 9.8 | 0.0043 |  |
| [CVE-2026-43284](https://patchblox.com/security/data/cve/CVE-2026-43284.md) | High | xfrm: esp: avoid in-place decrypt on shared skb frags | 8.8 | 0.9419 |  |
| [CVE-2026-46333](https://patchblox.com/security/data/cve/CVE-2026-46333.md) | High | ptrace: slightly saner 'get_dumpable()' logic | 8.1 | 0.0430 |  |
| [CVE-2026-31402](https://patchblox.com/security/data/cve/CVE-2026-31402.md) | High | kernel-64kb: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (bsc#1261638). | 9.8 | 0.0122 |  |
| [CVE-2025-71116](https://patchblox.com/security/data/cve/CVE-2025-71116.md) | High | libceph: make decode_pool() more resilient against corrupted osdmaps | 8.1 | 0.0046 |  |
| [CVE-2026-22984](https://patchblox.com/security/data/cve/CVE-2026-22984.md) | High | kernel-64kb: libceph: prevent potential out-of-bounds reads in handle_auth_done() (bsc#1257217). | 8.8 | 0.0041 |  |
| [CVE-2026-22990](https://patchblox.com/security/data/cve/CVE-2026-22990.md) | High | kernel: In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_app... | 8.8 | 0.0040 |  |
| [CVE-2026-31607](https://patchblox.com/security/data/cve/CVE-2026-31607.md) | High | usbip: validate number_of_packets in usbip_pack_ret_submit() | 9.8 | 0.0031 |  |
| [CVE-2026-23136](https://patchblox.com/security/data/cve/CVE-2026-23136.md) | High | kernel-livepatch-SLE15-SP7-RT_Update_11: libceph: reset sparse-read state in osd_fault() (bsc#1258303). | 8.1 | 0.0025 |  |
| [CVE-2026-23401](https://patchblox.com/security/data/cve/CVE-2026-23401.md) | High | KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE | 8.8 | 0.0019 |  |
| [CVE-2025-39766](https://patchblox.com/security/data/cve/CVE-2025-39766.md) | High | net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit | 8.1 | 0.0018 |  |
| [CVE-2026-31532](https://patchblox.com/security/data/cve/CVE-2026-31532.md) | High | can: raw: fix ro->uniq use-after-free in raw_rcv() | 8.8 | 0.0017 |  |
| [CVE-2026-23204](https://patchblox.com/security/data/cve/CVE-2026-23204.md) | High | kernel-64kb: net/sched: cls_u32: use skb_header_pointer_careful() (bsc#1258340). | 8.1 | 0.0016 |  |
| [CVE-2026-43128](https://patchblox.com/security/data/cve/CVE-2026-43128.md) | High | kernel-64kb: RDMA/umem: Fix double dma_buf_unpin in failure path (bsc#1264612). | 8.1 | 0.0014 |  |
| [CVE-2026-23270](https://patchblox.com/security/data/cve/CVE-2026-23270.md) | High | kernel-livepatch-SLE15-SP7-RT_Update_11: net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks (bsc#1259886). | 8.1 | 0.0014 |  |
| [CVE-2026-43163](https://patchblox.com/security/data/cve/CVE-2026-43163.md) | High | kernel-64kb: md/bitmap: fix GPF in write_page caused by resize race (bsc#1264335). | 8.1 | 0.0009 |  |

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Data as of 2026-11-11T01:43:54Z 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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