Linux Distros Unpatched Vulnerability : CVE-2026-46155

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - smb/client: fix out-of-bounds read in smb2compoundop If a server sends a truncated response but a large OutputBufferLength, and terminates the EA list early,...

Oracle Linux 8 : kernel (ELSA-2026-21706)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-21706 advisory. - smb: client: validate the whole DACL before rewriting it in cifsacl Paulo Alcantara RHEL-172815 CVE-2026-31709 - netfilter: xttcpmss: check remainin...

Unbreakable Enterprise kernel security update

5.4.17-2136.356.4.1 - smb: client: reject userspace cifs.spnego descriptions Asim Viladi Oglu Manizada Orabug: 39463669 5.4.17-2136.356.4 - tun: free page on buildskb failure in tunxdpone Weiming Shi Orabug: 39429147 - tap: free page on error paths in tapgetuserxdp Weiming Shi Orabug: 39429147 -...

Unbreakable Enterprise kernel security update

6.12.0-203.76.7.1 - smb: client: reject userspace cifs.spnego descriptions Asim Viladi Oglu Manizada Orabug: 39474418 6.12.0-203.76.7 - tun: free page on buildskb failure in tunxdpone Weiming Shi Orabug: 39456024 - tap: free page on error paths in tapgetuserxdp Weiming Shi Orabug: 39456024 - tun:...

CVE-2026-46243

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcalltarget that cifs.upcall treats as kernel-originating inputs. However,...

CVE-2026-46243

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcalltarget that cifs.upcall treats as kernel-originating inputs. However,...

UBUNTU-CVE-2026-46243

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcalltarget that cifs.upcall treats as kernel-originating inputs. However,...

CVE-2026-46243

The CVE-2026-46243 entry concerns the Linux kernel CIFS client. It fixes a bug where cifs.spnego key descriptions could be created by userspace (via request_key(2) or add_key(2)) and include fields (pid, uid, creduid, upcall_target) that are treated as kernel-origin inputs. The fix restricts acce...

CVE-2026-46243 smb: client: reject userspace cifs.spnego descriptions

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcalltarget that cifs.upcall treats as kernel-originating inputs. However,...

EUVD-2026-33668

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcalltarget that cifs.upcall treats as kernel-originating inputs. However,...

OESA-2026-2496 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: Revert "smb: client: fix TCP timers deadlock after rmmod" This reverts commit e9f2517a3e18a54a3943c098d2226b245d488801. Commit e9f2517a3e18 "smb: client: fix TCP...

SUSE CVE-2026-46155

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in smb2compoundop If a server sends a truncated response but a large OutputBufferLength, and terminates the EA list early, checkwsleas returns success without validating that the entire...

RHEL 8 : kernel (RHSA-2026:21706)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:21706 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Bluetooth: MGMT: Fix possible...

AlmaLinux 8 : kernel-rt (ALSA-2026:21745)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:21745 advisory. kernel: Bluetooth: MGMT: Fix possible UAFs CVE-2025-39981 kernel: ima: don't clear IMADIGSIG flag when setting or removing non-IMA xattr CVE-2025-68183...

CVE-2026-46139

A flaw was found in the Linux kernel's Server Message Block SMB client. When building an Access Control List ACL descriptor, a buffer was not properly zero-initialized, leaving a reserved field with uninitialized heap data. This can lead to Samba rejecting the security descriptor, causing chmod...

CVE-2026-46155

A flaw was found in the Linux kernel's Server Message Block SMB client. A remote attacker, acting as a malicious SMB server, could send a specially crafted, truncated response with an oversized buffer length. This could lead to an out-of-bounds read in the smb2compoundop function, allowing the...

CVE-2026-46185

A flaw was found in the Linux kernel's Server Message Block SMB client. This vulnerability arises from insufficient length validation in the smb2checkmessage function when processing symlink error responses. A remote attacker could exploit this by sending a specially crafted symlink error respons...

kernel: smb: client: validate dacloffset before building DACL pointers

A flaw was found in the Linux kernel's Server Message Block SMB client. A malicious server can exploit this vulnerability on 32-bit systems by providing a crafted dacloffset value. This can cause a pointer wrap, leading to the dereferencing of invalid Discretionary Access Control List DACL fields...

CVE-2026-46195

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building DACL pointers parsesecdesc, buildsecdesc, and the chown path in idmodetocifsacl all add the server-supplied dacloffset to pntsd before proving a DACL header fits inside the returne...

UBUNTU-CVE-2026-46185

In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in symlinkdata Since smb2checkmessage returns success without length validation for the symlink error response, in symlinkdata it is possible for iov-iovlen to be smaller than sizeofstruct...