CVE-2026-63828

In CVE-2026-63828, the Linux kernel patch fixes an AppArmor mediation gap for MSG_FASTOPEN: sendmsg/sendto could trigger an implicit connect, allowing a confined task to open an outbound TCP/MPTCP connection even if connect would be denied. The vulnerability arises because apparmor_socket_sendmsg...

CVE-2026-63827

Root cause: Linux kernel AppArmor uses a use-after-free in the rawdata dedup loop (aa_replace_profiles) due to unsafe refcount handling when traversing ns->rawdata_list. The dedup path calls aa_get_profile_loaddata() which has plain kref_get() semantics, allowing a zero counter to be dereferen...

EUVD-2026-45493

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix use-after-free in rawdata dedup loop aareplaceprofiles walks ns-rawdatalist to dedup the incoming policy blob against entries already attached to existing profiles. Per the kernel-doc on struct aaloaddata, list...

CVE-2026-63828

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

CVE-2026-63827

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix use-after-free in rawdata dedup loop aareplaceprofiles walks ns-rawdatalist to dedup the incoming policy blob against entries already attached to existing profiles. Per the kernel-doc on struct aaloaddata, list...

CVE-2026-63827

In the Linux kernel, the following vulnerability has been resolved: apparmor: fix use-after-free in rawdata dedup loop aareplaceprofiles walks ns-rawdatalist to dedup the incoming policy blob against entries already attached to existing profiles. Per the kernel-doc on struct aaloaddata, list...

CVE-2026-63828

In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection in the SYN. apparmorsocketsendmsg only checks AAMAYSEND, so a profil...

Linux Distros Unpatched Vulnerability : CVE-2026-63827

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - apparmor: fix use-after-free in rawdata dedup loop aareplaceprofiles walks ns-rawdatalist to dedup the incoming policy blob against entries already attached to...

PT-2026-61143

Name of the Vulnerable Software and Affected Versions Linux kernel version 7.1-rc5 Description A use-after-free issue exists in the AppArmor module of the Linux kernel during the rawdata deduplication loop. The function aa replace profiles iterates through ns-rawdata list to deduplicate incoming...

PT-2026-61428

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Linux Security Module LSM where the cred guard mutex is not held during the execution of the lsm set self attr function. This is particularly relevant for SELinux...

Linux Distros Unpatched Vulnerability : CVE-2026-63828

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg/sendto with MSGFASTOPEN is a combination of connect2 and write2: it opens the connection...

EulerOS 2.0 SP12 : kernel (EulerOS-SA-2026-2535)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : Input: alps - fix use-after-free bugs caused by dev3registerworkCVE-2025-68822 ext4: reject mount if bigalloc with sfirstdatablock !=...

EulerOS 2.0 SP12 : kernel (EulerOS-SA-2026-2595)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : Input: alps - fix use-after-free bugs caused by dev3registerworkCVE-2025-68822 ext4: reject mount if bigalloc with sfirstdatablock !=...

USN-8508-1: Linux kernel (NVIDIA) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - S390 architecture; - Block layer subsystem; - Cryptographic API; - DMA engine subsystem; - GP...

USN-8508-1 linux-nvidia-6.17 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - S390 architecture; - Block layer subsystem; - Cryptographic API; - DMA engine subsystem; - GP...

Ubuntu 26.04 LTS : Linux kernel (OEM) vulnerabilities (USN-8489-1)

"The remote Ubuntu 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8489-1 advisory. It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag....

Ubuntu 24.04 LTS : Linux kernel (Xilinx) vulnerabilities (USN-8499-1)

"The remote Ubuntu 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8499-1 advisory. It was discovered that the Linux kernel algifaead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A...

USN-8499-1 linux-xilinx vulnerabilities

It was discovered that the Linux kernel algifaead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-31431 It was discovered that the Linux kernel did n...

USN-8499-1: Linux kernel (Xilinx) vulnerabilities

It was discovered that the Linux kernel algifaead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-31431 It was discovered that the Linux kernel did n...

USN-8497-1: Linux kernel (Low Latency) vulnerabilities

It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processing paged fragments. A local attacker...