CVE-2026-23355

In the Linux kernel, the following vulnerability has been resolved: ata: libata: cancel pending work after clearing deferredqc Syzbot reported a WARNON in atascsideferredqcwork, caused by ap-ops-qcdefer returning non-zero before issuing the deferred qc. atascsischeduledeferredqc is called during...

CVE-2026-23355 ata: libata: cancel pending work after clearing deferred_qc

In the Linux kernel, the following vulnerability has been resolved: ata: libata: cancel pending work after clearing deferredqc Syzbot reported a WARNON in atascsideferredqcwork, caused by ap-ops-qcdefer returning non-zero before issuing the deferred qc. atascsischeduledeferredqc is called during...

CVE-2026-23355 ata: libata: cancel pending work after clearing deferred_qc

In the Linux kernel, the following vulnerability has been resolved: ata: libata: cancel pending work after clearing deferredqc Syzbot reported a WARNON in atascsideferredqcwork, caused by ap-ops-qcdefer returning non-zero before issuing the deferred qc. atascsischeduledeferredqc is called during...

CVE-2026-23355

The CVE-2026-23355 issue affects the Linux kernel libata subsystem. It describes a defect where queued work for a deferred command (deferred_qc) is not canceled when cleared, allowing a WARN_ON() condition to fire later if ap->ops->qc_defer() returns non-zero. The root cause is that, althou...

CVE-2026-23352 x86/efi: defer freeing of boot services memory

In the Linux kernel, the following vulnerability has been resolved: x86/efi: defer freeing of boot services memory efifreebootservices frees memory occupied by EFIBOOTSERVICESCODE and EFIBOOTSERVICESDATA using memblockfreelate. There are two issue with that: memblockfreelate should be used for...

CVE-2026-23352

In the Linux kernel, the following vulnerability has been resolved: x86/efi: defer freeing of boot services memory efifreebootservices frees memory occupied by EFIBOOTSERVICESCODE and EFIBOOTSERVICESDATA using memblockfreelate. There are two issue with that: memblockfreelate should be used for...

CVE-2026-23352

CVE-2026-23352 affects Linux kernel's x86 EFI code: efi_free_boot_services() defers freeing of EFI_BOOT_SERVICES memory, but memblock_free_late() is not suitable for reserved memory and may miss uninitialized memory maps when CONFIG_DEFERRED_STRUCT_PAGE_INIT=y. This can cause a RAM leak (~140 MB ...

CVE-2026-23352 x86/efi: defer freeing of boot services memory

In the Linux kernel, the following vulnerability has been resolved: x86/efi: defer freeing of boot services memory efifreebootservices frees memory occupied by EFIBOOTSERVICESCODE and EFIBOOTSERVICESDATA using memblockfreelate. There are two issue with that: memblockfreelate should be used for...

PT-2026-27720

In the Linux kernel, the following vulnerability has been resolved: ata: libata: cancel pending work after clearing deferred qc Syzbot reported a WARN ON in ata scsi deferred qc work, caused by ap-ops-qc defer returning non-zero before issuing the deferred qc. ata scsi schedule deferred qc is...

Linux Distros Unpatched Vulnerability : CVE-2026-23352

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - x86/efi: defer freeing of boot services memory efifreebootservices frees memory occupied by EFIBOOTSERVICESCODE and EFIBOOTSERVICESDATA using memblockfreelate...

CVE-2026-23554

CVE-2026-23554 covers a use-after-free in the Intel EPT paging code where deferred flushing of cached EPT state can leave freed paging structures briefly cached. The issue affects Xen hypervisor components (as reported in multiple distro advisories) and can allow a local attacker to access memory...

CVE-2026-23275

In the Linux kernel, the following vulnerability has been resolved: iouring: ensure ctx-rings is stable for task work flags manipulation If DEFERTASKRUN | SETUPTASKRUN is used and task work is added while the ring is being resized, it's possible for the OR'ing of IORINGSQTASKRUN to happen in the...

GHSA-84XM-R438-86PX Envoy: HTTP - filter chain execution on reset streams causing UAF crash

Note: This vulnerability was originally reported to the Google OSS VRP Issue ID: 477542544. The Google Security Team requested that I coordinate directly with the Envoy maintainers for triage and remediation. I am submitting this report here to facilitate that process. Technical Details I have...

Envoy: HTTP - filter chain execution on reset streams causing UAF crash

Note: This vulnerability was originally reported to the Google OSS VRP Issue ID: 477542544. The Google Security Team requested that I coordinate directly with the Envoy maintainers for triage and remediation. I am submitting this report here to facilitate that process. Technical Details I have...

PT-2026-24622

Note: This vulnerability was originally reported to the Google OSS VRP Issue ID: 477542544. The Google Security Team requested that I coordinate directly with the Envoy maintainers for triage and remediation. I am submitting this report here to facilitate that process. Technical Details I have...

Important: kernel6.12

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: bpf: Reject narrower access to pointer ctx fields CVE-2025-38591 In the Linux kernel, the following vulnerability has been resolved: schedext: Fix possible deadlock in the deferredirqworkfn CVE-2025-68333 In the...

PT-2026-30187

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw within the NFS daemon NFSD related to the handling of sub-object cleanup during export release. Specifically, the svc export put function calls path put...

Siemens SCALANCE and RUGGEDCOM Improper Input Validation (CVE-2025-39841)

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix buffer free/clear order in deferred receive path Fix a use-after-free window by correcting the buffer release sequence in the deferred receive path. The code freed the RQ buffer first and only then cleared the...

CVE-2025-71089

A security vulnerability was found in the Linux kernel's IOMMU Shared Virtual Addressing SVA implementation on x86 architecture. When SVA is enabled, the IOMMU caches kernel page table entries. Since the kernel lacks a mechanism to notify the IOMMU when kernel page table pages are freed and...

kernel: smb: client: fix race with concurrent opens in rename(2)

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix race with concurrent opens in rename2 Besides sending the rename request to the server, the rename process also involves closing any deferred close, waiting for outstanding I/O to complete as well as marking all...