Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv-len is a multiple of 4, then dstlen / 4 can write past the destination array which leads to stack corruption. This construct is necessary to clean th...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel, which stems from a vulnerability in the tcp module...

SUSE CVE-2023-52881

In the Linux kernel, the following vulnerability has been resolved: tcp: do not accept ACK of bytes we never sent This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. ACK seq validation is currently following RFC 5961 5.2 guidelines: The ACK value is considered...

CVE-2023-52881

A flaw was found in the Linux kernel. Two TCP spoofing primitives exist where an attacker can brute force the server-chosen send window by acknowledging data that was never sent, called "ghost ACKs." There are side channels that also allow the attacker to leak the otherwise secret server-chosen...

CVE-2023-52881

In the Linux kernel, the following vulnerability has been resolved: tcp: do not accept ACK of bytes we never sent This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. ACK seq validation is currently following RFC 5961 5.2 guidelines: The ACK value is considered...

CVE-2023-52881

In the Linux kernel, the following vulnerability has been resolved: tcp: do not accept ACK of bytes we never sent This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. ACK seq validation is currently following RFC 5961 5.2 guidelines: The ACK value is considered...

CVE-2023-52881 tcp: do not accept ACK of bytes we never sent

In the Linux kernel, the following vulnerability has been resolved: tcp: do not accept ACK of bytes we never sent This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. ACK seq validation is currently following RFC 5961 5.2 guidelines: The ACK value is considered...

CVE-2023-52881

The CVE-2023-52881 entry describes a Linux kernel defect where the TCP ACK validation allowed acknowledging data never sent (ghost ACKs). Root cause: ACK sequence checks (per RFC 5961 guidance) could be bypassed, enabling ACKs that acknowledge bytes not yet transmitted, potentially leaking server...

CVE-2023-52881 tcp: do not accept ACK of bytes we never sent

In the Linux kernel, the following vulnerability has been resolved: tcp: do not accept ACK of bytes we never sent This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. ACK seq validation is currently following RFC 5961 5.2 guidelines: The ACK value is considered...

CVE-2023-52881 tcp: do not accept ACK of bytes we never sent

In the Linux kernel, the following vulnerability has been resolved: tcp: do not accept ACK of bytes we never sent This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. ACK seq validation is currently following RFC 5961 5.2 guidelines: The ACK value is considered...

krb5 security update

1.18.2-27.0.1 - Fixed race condition in krb5setpassword Orabug: 33609767 1.18.2-27 - Fix memory leak in GSSAPI interface Resolves: RHEL-27250 - Fix memory leak in PMAP RPC interface Resolves: RHEL-27244 - Make TCP waiting time configurable Resolves: RHEL-17131...

Oracle Linux 8 : krb5 (ELSA-2024-3268)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-3268 advisory. 1.18.2-27.0.1 - Fixed race condition in krb5setpassword Orabug: 33609767 1.18.2-27 - Fix memory leak in GSSAPI interface Resolves: RHEL-27250 - Fix...

Ubuntu 22.04 LTS : Linux kernel (Intel IoTG) vulnerabilities (USN-6795-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6795-1 advisory. Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux kernel contained a race condition during device removal, leading to a use-...

CVE-2023-30314

An issue discovered in 360 V6G, 360 T5G, 360 T6M, and 360 P1 routers allows attackers to hijack TCP sessions which could lead to a denial of service...

CVE-2023-30312

An issue discovered in OpenWrt 18.06, 19.07, 21.02, 22.03, and beyond allows off-path attackers to hijack TCP sessions, which could lead to a denial of service, impersonating the client to the server e.g., for access to files over FTP, and impersonating the server to the client e.g., to deliver...

CVE-2023-30314

An issue discovered in 360 V6G, 360 T5G, 360 T6M, and 360 P1 routers allows attackers to hijack TCP sessions which could lead to a denial of service...

CVE-2023-30314

An issue discovered in 360 V6G, 360 T5G, 360 T6M, and 360 P1 routers allows attackers to hijack TCP sessions which could lead to a denial of service...

CVE-2023-30306

An issue discovered in Mercury x30g, Mercury YR1800XG routers allows attackers to hijack TCP sessions which could lead to a denial of service...

CVE-2023-30310

An issue discovered in Comfast Comfast CF-616AC routers allows attackers to hijack TCP sessions which could lead to a denial of service...

CVE-2023-30307

An issue discovered in TP-LINK TL-R473GP-AC, TP-LINK XDR6020, TP-LINK TL-R479GP-AC, TP-LINK TL-R4239G, TP-LINK TL-WAR1200L, and TP-LINK TL-R476G routers allows attackers to hijack TCP sessions which could lead to a denial of service...