Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: Fixed an out-of-bounds condition during the parsing of TCP options. The TCP option parser in synproxy（synproxyparseoptions）could read one byte out of bounds. When the length is 1, the execution flow enters a...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: schcake: A out-of-bounds access issue was fixed during the parsing of TCP options and headers. The TCP option parser in cake qdisc cakegettcpopt and caketcphmaydrop could read one byte out of bounds. When the length of the data...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: mptcp: fixed TCP options overflow. Syzbot reported the following errors: Oops: general protection fault, likely due to a non-canonical address 0xdffffc0000000001: 0000 1 PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range...

CVE-2026-97417

A flaw was found in the Linux kernel's netfilter connection tracking subsystem. The TCP option processing mechanism improperly assumes memory alignment when reading packet headers. A remote attacker could exploit this vulnerability by sending crafted TCP packets with misaligned SACK options throu...

CVE-2026-16931

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options...

CVE-2026-16931 IBM i is Affected By A Denial of Service Vulnerability []

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options...

CVE-2026-16931

CVE-2026-16931 affects IBM i releases 7.6, 7.5, 7.4 and 7.3. A remote attacker could cause a denial of service through improper handling of zero-length TCP options. The vulnerability has a CVSS v3.1 base score of 7.5 (NETWORK, HIGH impact on availability; no impact on confidentiality/integrity). ...

EUVD-2026-57376

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options...

CVE-2026-16931 IBM i is Affected By A Denial of Service Vulnerability []

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options...

PT-2026-71184

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options...

CVE-2026-16931: Loop with Unreachable Exit Condition

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper handling of zero-length TCP options...

Security Bulletin: IBM i is Affected By A Denial of Service Vulnerability [CVE-2026-16931]

Summary IBM i is vulnerable to a denial of service due to improper handling of TCP options CVE-2026-16931 as described in the vulnerability details section. Vulnerability Details CVEID:CVE-2026-16931 DESCRIPTION: IBM i could allow a remote attacker to cause a denial of service due to improper...

CVE-2026-68119

In the Linux kernel, the following vulnerability has been resolved: tcp: initialize standalone TCP-AO response padding tcpv4sendack and tcpv6sendresponse construct standalone TCP responses with TCP-AO options. The option length carries the actual MAC length, but the TCP header length includes the...

CVE-2026-52999

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlinkosf: fix out-of-bounds read on option matching In nfosfmatch, the nfosfhdrctx structure is initialized once and passed by reference to nfosfmatchone for each fingerprint checked. During TCP option parsing,...

kernel: netfilter: xt_tcpmss: check remaining length before reading optlen

A flaw was found in the Linux kernel, specifically within the netfilter: xttcpmss module. A remote attacker could exploit this vulnerability by sending a specially crafted TCP packet. The TCP option parser does not properly validate the remaining option length, which results in an out-of-bounds...

WS-2021-0334

Linux/Kernel in versions v5.13-rc1 to v5.13-rc6 is vulnerable to out of bounds when parsing TCP options...

WS-2021-0332

Linux/Kernel in versions v5.13-rc1 to v5.13-rc6 is vulnerable to out of bounds when parsing TCP options and header...

CVE-2026-43190 netfilter: xt_tcpmss: check remaining length before reading optlen

In the Linux kernel, the following vulnerability has been resolved: netfilter: xttcpmss: check remaining length before reading optlen Quoting reporter: In net/netfilter/xttcpmss.c lines 53-68, the TCP option parser reads opi+1 directly without validating the remaining option length. If the last...

SUSE CVE-2026-23397

In the Linux kernel, the following vulnerability has been resolved: nfnetlinkosf: validate individual option lengths in fingerprints nfnlosfaddcallback validates optnum bounds and string NUL-termination but does not check individual option length fields. A zero-length option causes nfosfmatchone ...

DEBIAN-CVE-2026-23397

In the Linux kernel, the following vulnerability has been resolved: nfnetlinkosf: validate individual option lengths in fingerprints nfnlosfaddcallback validates optnum bounds and string NUL-termination but does not check individual option length fields. A zero-length option causes nfosfmatchone ...