CVE-2026-23397 nfnetlink_osf: validate individual option lengths in fingerprints

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 ...

CVE-2026-23397 nfnetlink_osf: validate individual option lengths in fingerprints

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 ...

CVE-2026-23397

CVE-2026-23397 affects the Linux kernel nfnetlink_osf fingerprint matching. The issue arises when parsing TCP option fingerprints: add-time checks for option lengths are insufficient, allowing a zero-length option to bypass bounds checks and potentially trigger a fault in nf_osf_match_one() (kern...

Linux Distros Unpatched Vulnerability : CVE-2026-23397

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfnetlinkosf: validate individual option lengths in fingerprints nfnlosfaddcallback validates optnum bounds and string NUL-termination but does not check...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000744)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000744 advisory. The sfc aka Solarflare Solarstorm driver in the Linux kernel before 3.2.30 allows remote attackers to cause a denial of service DMA descriptor consumption and...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003742)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003742 advisory. Jonathan Looney discovered that the Linux kernel default MSS is hard-coded to 48 bytes. This allows a remote peer to fragment TCP resend queues significantly more th...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003015)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003015 advisory. The tcpmssmanglepacket function in net/netfilter/xtTCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of...

PT-2026-28330

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw within the nfnetlink osf module related to the validation of option lengths in network packet fingerprints. Specifically, the nfnl osf add callback...

SUSE CVE-2025-68291

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

EUVD-2025-203789

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

AZL-74172 CVE-2025-68291 affecting package kernel for versions less than 6.6.121.1-1

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

CVE-2025-68291

In the Linux kernel, the following vulnerability has been resolved: mptcp: Initialise rcvmss before calling tcpsendactivereset in mptcpdofastclose. syzbot reported divide-by-zero in tcpselectwindow by MPTCP socket. 0 We had a similar issue for the bare TCP and fixed in commit 499350a5a6e7 "tcp:...

EUVD-2023-60157

In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp-dccpsmsscache dccpsendmsg reads dp-dccpsmsscache before locking the socket. Same thing in dodccpgetsockopt. Add READONCE/WRITEONCE annotations, and change dccpsendmsg to check again dccpsmsscache aft...

DEBIAN-CVE-2023-53839

In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp-dccpsmsscache dccpsendmsg reads dp-dccpsmsscache before locking the socket. Same thing in dodccpgetsockopt. Add READONCE/WRITEONCE annotations, and change dccpsendmsg to check again dccpsmsscache aft...

UBUNTU-CVE-2023-53839

In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp-dccpsmsscache dccpsendmsg reads dp-dccpsmsscache before locking the socket. Same thing in dodccpgetsockopt. Add READONCE/WRITEONCE annotations, and change dccpsendmsg to check again dccpsmsscache aft...

CVE-2023-53839

In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp-dccpsmsscache dccpsendmsg reads dp-dccpsmsscache before locking the socket. Same thing in dodccpgetsockopt. Add READONCE/WRITEONCE annotations, and change dccpsendmsg to check again dccpsmsscache aft...

CVE-2023-53839 dccp: fix data-race around dp->dccps_mss_cache

In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp-dccpsmsscache dccpsendmsg reads dp-dccpsmsscache before locking the socket. Same thing in dodccpgetsockopt. Add READONCE/WRITEONCE annotations, and change dccpsendmsg to check again dccpsmsscache aft...

CVE-2023-53839 dccp: fix data-race around dp->dccps_mss_cache

In the Linux kernel, the following vulnerability has been resolved: dccp: fix data-race around dp-dccpsmsscache dccpsendmsg reads dp-dccpsmsscache before locking the socket. Same thing in dodccpgetsockopt. Add READONCE/WRITEONCE annotations, and change dccpsendmsg to check again dccpsmsscache aft...

CVE-2023-53839

The CVE-2023-53839 entry concerns a data race in the Linux kernel's DCCP path. Specifically, dccp_sendmsg() and do_dccp_getsockopt() read dp->dccps_mss_cache before acquiring the socket lock, allowing a race with concurrent updates. The fix adds READ_ONCE()/WRITE_ONCE() annotations and modifie...

Linux kernel 安全漏洞

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 that stems from the presence of data contention in dccpsmsscache...