kernel: selinux: fix overlayfs mmap() and mprotect() access checks

A flaw was found in the Linux kernel's SELinux security module when handling overlayfs. The existing security model for overlayfs does not properly enforce access controls for mmap and mprotect operations. This oversight could allow a local attacker to bypass intended security policies, potential...

ALPINE-CVE-2026-42489

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. To create and manage guests, domctl operations are used by the control domain, a possible Xenstore domain, or by a domain controlling a particular guest. Some of these...

CVE-2026-42490

The Xen hypervisor is vulnerable to a security issue in its domctl operations, which are used to create and manage guests. When XSM/Flask is active, the system-wide lock for certain operations is acquired before permission checks occur. This vulnerability could potentially lead to privilege escal...

CVE-2026-42489 domctl lock open to abuse

This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE. To create and manage guests, domctl operations are used by the control domain, a possible Xenstore domain, or by a domain controlling a particular guest. Some of these...

kernel: selinux: fix overlayfs mmap() and mprotect() access checks

A flaw was found in the Linux kernel's SELinux security module when handling overlayfs. The existing security model for overlayfs does not properly enforce access controls for mmap and mprotect operations. This oversight could allow a local attacker to bypass intended security policies, potential...

CVE-2026-46054

A flaw was found in the Linux kernel's SELinux security module when handling overlayfs. The existing security model for overlayfs does not properly enforce access controls for mmap and mprotect operations. This oversight could allow a local attacker to bypass intended security policies, potential...

CVE-2026-46055 apparmor: Fix string overrun due to missing termination

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix string overrun due to missing termination When booting Ubuntu 26.04 with Linux 7.0-rc4 on an ARM64 Qualcomm Snapdragon X1 we see a string buffer overrun: BUG: KASAN: slab-out-of-bounds in aadfamatch...

PT-2026-43921

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The SELinux security model for overlayfs allows access if the current task can access the top-level user file and the mounter's credentials are sufficient for the lower-level backing fil...

CVE-2026-47672

epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. In 1.2.4 and earlier, any network-reachable caller can write arbitrary documents to any patient's electronic health record accessible by the institution's SMC-B card. In a misconfigured deployment e.g.,...

ALSA-2026:19664 Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation LPE vulnerability in th...

CVE-2026-41971

Permission control vulnerability in the security control module. Impact: Successful exploitation of this vulnerability may affect service confidentiality...

PT-2026-41292

Permission control vulnerability in the security control module. Impact: Successful exploitation of this vulnerability may affect service confidentiality...

USN-8267-1: Linux kernel vulnerabilities

Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module LSM. An unprivileged local attacker could use these issues to load, replace, and remove arbitrary AppArmor profiles causing denial of service, exposure of sensitive information kernel memory, local...

Exploit for CVE-2026-31431

copy-fail-blocker BPF-LSM mitigation for CVE-2026-31431htt...

USN-8201-1: Linux kernel (Azure) vulnerabilities

Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module LSM. An unprivileged local attacker could use these issues to load, replace, and remove arbitrary AppArmor profiles causing denial of service, exposure of sensitive information kernel memory, local...

USN-8098-10 linux-raspi, linux-raspi-5.4 vulnerabilities

Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module LSM. An unprivileged local attacker could use these issues to load, replace, and remove arbitrary AppArmor profiles causing denial of service, exposure of sensitive information kernel memory, local...

USN-8163-1 linux-azure-fips vulnerabilities

Qualys discovered that several vulnerabilities existed in the AppArmor Linux kernel Security Module LSM. An unprivileged local attacker could use these issues to load, replace, and remove arbitrary AppArmor profiles causing denial of service, exposure of sensitive information kernel memory, local...

PT-2026-61182

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description Certain sleepable LSM Linux Security Module programs cannot be used with the bpf lsm task to inode function because it is called under rcu read lock, and the bpf lsm inet conn establishe...

USN-8152-1 linux-oem-6.17 vulnerabilities

It was discovered that some AMD Zen 5 processors supporting RDSEED instruction did not properly handle entropy, potentially resulting in the consumption of insufficiently random values. A local attacker could possibly use this issue to influence the values returned by the RDSEED instruction causi...

CVE-2026-35199

SymCrypt is the core cryptographic function library currently used by Windows. From 103.5.0 to before 103.11.0, The SymCryptXmssSign function passes a 64-bit leaf count value to a helper function that accepts a 32-bit parameter. For XMSS^MT parameter sets with total tree height = 32 which include...