CVE-2026-64009

The CVE-2026-64009 family affects the Linux kernel xfrm subsystem, specifically an out-of-bounds write in ESP handling due to an underflow in xfrm_state_mtu(). The function computes using unsigned arithmetic: it subtracts attacker-influenced header_len + authsize + net_adj from a small mtu, allow...

CVE-2026-63912

The CVE concerns the Linux kernel XFRM/ESP path. The vulnerability arises in the ESP out-of-place fast path where an out-of-line trailer is written before dest page frag allocation; the head gate and tail code previously treated skb->data_len and tailen separately, risking an overflow when the...

CVE-2026-63912 xfrm: esp: restore combined single-frag length gate

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: restore combined single-frag length gate The ESP out-of-place fast path appends the trailer in espoutputhead before espoutputtail allocates the destination page frag. The head-side gate currently checks skb-datalen and...

CVE-2026-63912 xfrm: esp: restore combined single-frag length gate

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: restore combined single-frag length gate The ESP out-of-place fast path appends the trailer in espoutputhead before espoutputtail allocates the destination page frag. The head-side gate currently checks skb-datalen and...

EUVD-2026-45685

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: restore combined single-frag length gate The ESP out-of-place fast path appends the trailer in espoutputhead before espoutputtail allocates the destination page frag. The head-side gate currently checks skb-datalen and...

CVE-2026-63912

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: restore combined single-frag length gate The ESP out-of-place fast path appends the trailer in espoutputhead before espoutputtail allocates the destination page frag. The head-side gate currently checks skb-datalen and...

EUVD-2026-45557

In the Linux kernel, the following vulnerability has been resolved: esp: fix page frag reference leak on skbtosgvec failure In espoutputtail, when esp-inplace is false, the old skb page frags are replaced with a new page from the xfrm pagefrag cache. The source scatterlist sg is built from the ol...

CVE-2026-63872

Removed by vendor...

CVE-2026-63872

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PT-2026-61189

In the Linux kernel, the following vulnerability has been resolved: esp: fix page frag reference leak on skb to sgvec failure In esp output tail, when esp-inplace is false, the old skb page frags are replaced with a new page from the xfrm page frag cache. The source scatterlist sg is built from t...

CVE-2026-53363

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: preserve shared-frag marker in iptfsconsumefrags iptfsconsumefrags transfers paged fragments from one socket buffer to another but fails to propagate the SKBFLSHAREDFRAG flag. This is the same class of bug that was...

PT-2026-57153

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: preserve shared-frag marker in iptfs consume frags iptfs consume frags transfers paged fragments from one socket buffer to another but fails to propagate the SKBFL SHARED FRAG flag. This is the same class of bug that...

PYSEC-2026-1330 ESP-IDF web_server basic auth bypass using empty or incomplete Authorization header

Summary On the ESP-IDF platform, ESPHome's webserver authentication check can pass incorrectly when the client-supplied base64-encoded Authorization value is empty or is a substring of the correct value e.g., correct username with partial password. This allows access to webserver functionality...

USN-8501-1 linux vulnerabilities

It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. CVE-2026-43503 Several security issues...

kernel: "Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel

A flaw was found in the Linux kernel's xfrm-ESP and RxRPC subsystems. Unsafe in-place cryptographic processing of shared socket buffer fragments allows a low-privileged local attacker to corrupt page-cache contents of readable files, including sensitive system files, and gain root privileges. The...

EulerOS Virtualization 2.13.0 : kernel (EulerOS-SA-2026-2518)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : xfrm: esp: avoid in-place decrypt on shared skb fragsCVE-2026-43284 Tenable has extracted the preceding description block directly...

SUSE-SU-2026:22488-1 Security update for the Linux Kernel RT (Live Patch 20 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-42.1 fixes various security issues The following security issues were fixed: - CVE-2025-54518: AMD-SN-7052: CPU OP Cache Corruption bsc1264096. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache bsc1261640. - CVE-2026-3150...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 RT kernel was updated to fix various security issues The following security issues were fixed: CVE-2025-38549: efivarfs: Fix memory leak of efivarfsfsinfo in fscontext error paths bsc1248235. CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished...

Ubuntu 20.04 LTS : Linux kernel (Oracle) vulnerabilities (USN-8462-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8462-1 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...

SUSE-SU-2026:2482-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-38549: efivarfs: Fix memory leak of efivarfsfsinfo in fscontext error paths bsc1248235. - CVE-2025-68324: scsi: imm: Fix use-after-free bug caused by unfinished...