FreeBSD -- Use-after-free in TCP RACK stack option handler

Problem Description: The RACK setsockopt2 handler drops the connection lock in order to copy option data from userspace, then reacquires the lock. After reacquiring, it verifies that the TCP stack had not been switched away, but did not reload its pointer to the stack's per-connection control...

FreeBSD -- unlinkat(2) ignores AT_RESOLVE_BENEATH flag

Problem Description: The kernel function that implements unlinkat2 and funlinkat2 validated the ATRESOLVEBENEATH flag but failed to pass it through to the underlying path lookup. The flag was silently dropped, so path resolution was not actually restricted. Impact: A process that uses...

FreeBSD -- Buffer overflow in libalias RTSP handler

Problem Description: The RTSP handler in libalias rewrote outgoing packets into a fixed-length stack buffer without checking whether the rewritten data fit in the buffer, or whether the result fit back in the original packet. Impact: A host sending crafted RTSP traffic from inside a NAT gateway...

FreeBSD -- Multiple vulnerabilities in POSIX largepage objects

Problem Description: Pages belonging to largepage shared memory objects were not explicitly wired. When sendfile2 transmitted such an object with the SFNOCACHE flag, it freed the underlying pages after transmission even though existing mappings still referred to them. CVE-2026-49427 Separately,...

FreeBSD -- Local privilege escalation via execve(2) TOCTOU race

Problem Description: During execve2 of a SUID binary, the new virtual address space is installed before the process credentials are updated. During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging...

FreeBSD -- Jail reference count underflow

Problem Description: When the JAILATDESC flag is specified, kernjailset and kernjailget released the reference to the caller's current prison before looking up the jail descriptor. If the descriptor lookup failed, error-handling paths released the same reference a second time. Impact: An...

FreeBSD -- Use-after-free in device pager page list

Problem Description: When msyncMSINVALIDATE is called on a mapping of an unmanaged device object, the physical pages in the mapping range are marked invalid but remain in the pager's page list. A subsequent page fault will cause the fault handler to re-insert the page into the object's list. This...

FreeBSD -- Multiple vulnerabilities in OpenZFS

Problem Description: The ZFSIOCUSERSPACEMANY ioctl, used by zfs-userspace8, truncated a 64-bit output buffer size to a 32-bit integer for the kernel allocation, but used the original 64-bit size as the buffer limit when writing records. The ZFSIOCRECVNEW ioctl, in the heal receive path, similarly...

PostgresSQL JDBC -- Silent channel-binding authentication downgrade via unsupported certificate algorithms

PostgreSQL project reports: channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to guarantee. An attacker who can intercept the TLS connection...

traefik -- Multiple vulnerabilities

The traefik project releases a new version addressing multiple CVEs: CVE-2026-54763 underscore-variant identity spoofing CVE-2026-54764 ForwardAuth middleware leaks X-Forwarded-Port spoofing CVE-2026-54765 Gateway HTTPRoute backendRef filters can leak backend context...

FreeBSD-kernel -- Kernel stack disclosure in 32-bit compatibility support

Problem Description: The compat32 kevent handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct. Impact: An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information...

FreeBSD -- Incorrect audit records for ptrace(2) syscall requests

Problem Description: When auditing a system call executed via ptracePTSCREMOTE, the kernel passed the return value of an internal setup function to AUDITSYSCALLEXIT rather than the actual result of the executed system call. As a result, committed audit records for system calls which returned an...

icinga2 -- Improper access control for JSON-RPC update certificate messages

The Icinga team reports: The code handling certificate update JSON-RPC messages was flawed and did not properly validate the sender of the message, allowing an unauthenticated attacker that can connect to Icinga 2 to update both the own certificate as well as the trusted CA certificate. Updating...

Fetchmail -- NTLM potential remote code execution

Fetchmail reports: CVE-2026-94184: Fetchmail's NTLM authentication client can in some cases be susceptible to a remote code execution from a malicious server when fetchmail is configured with the NTLM feature enabled, depending on build details. fetchmail 6.6.7 release candidates, 6.6.7 and...

chromium -- security fixes

Chrome Releases reports: This update includes 3 security fixes: 513138301 High CVE-2026-13281: Integer overflow in Mojo. Reported by Google on 2026-05-14 517522620 High CVE-2026-13282: Use after free in Payments. Reported by Google on 2026-05-28 522561151 High CVE-2026-13283: Use after free in...

NSD -- vulnerabilities

NLnet Labs reports: CVE-2026-12244: A specially crafted SVCB RR can cause a heap overflow of up to 65509 attacker controlled bytes. If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rda...

DNSdist -- vulnerabilities

The DNSdist team reports: CVE-2026-40011: Prometheus denial of service via crafted DNS queries CVE-2026-42004: EDNS options smuggling CVE-2026-42005: Insufficient input validation of internal web server CVE-2026-40208: Denial of service via DoH3 queries CVE-2026-40209: Denial of service via IXFR...

Multiple vulnerability found in Expat

Expat 2.8.2 was released yesterday. The key motivation for cutting a release and doing so now was getting security and non-security bugsfixes out to users. On the security side, 13 vulnerabilities have been fixed: CVE-2026-50219: missing control flow integrity checks CVE-2026-56131: missing contr...

Gitlab -- Vulnerabilities

Gitlab reports: Cross-site Scripting issue in Analytics Dashboard impacts GitLab EE Cross-site Scripting issue in Web IDE workbench asset handler impacts GitLab CE/EE Information Disclosure issue in Duo Workflows impacts GitLab EE Authorization Bypass issue in Virtual Registry Cleanup Policy API...

rclone -- Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation

https://github.com/rclone/rclone/security/advisories/GHSA-qw24-gh76-8rvv reports: Rclone is a command-line program to sync files and directories to and from different cloud storage providers.From 1.46.0 until 1.74.3, rclone rcd --rc-serve accepts unauthenticated GET and HEAD requests to paths of...

podman -- files outside build context may be included via malicious Git repo or tar archive

The Podman developers report: Building a Dockerfile using an ADD or COPY instruction accessing a malicious Git repository or tar archive could cause files outside the build context directory to be included in the build context or copied into the build...

ffmpeg -- Out-of-bounds write

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23159 reports: An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution. This vulnerability is associated with the...

nginx -- multiple vulnerabilities

The nginx developers report: A heap memory buffer overflow vulnerability when using the "ignoreinvalidheaders off;" and "largeclientheaderbuffers" directives with large configured values while proxying a specially crafted request to an HTTP/2 or gRPC backend may allow memory corruption or a...

mail/mailpit -- Incomplete SSRF protection in Link Check API via uncovered IPv6 forms

Mailpit authorreports: The tools.IsInternalIP deny-list relies on Go's stdlib classification helpers IsLoopback, IsPrivate, IsLinkLocalUnicast, IsLinkLocalMulticast, IsUnspecified, IsMulticast plus an inline CGNAT range, but those helpers do not match two classes of IPv6 address that should be...

nginx -- multiple vulnerabilities

The nginx developers report: A use-after-free vulnerability when using HTTP/3 and processing a specially crafted QUIC session may allow memory corruption or a segmentation fault in a worker process CVE-2026-42530. A heap memory buffer overflow vulnerability when using the "ignoreinvalidheaders...

cacti -- multiple vulnerabilities

Cacti project reports: This release includes fixes for a number of vulnerabilities that were responsibly disclosed by external researchers CVE-2026-39894 RRDtool metric shift via LCNUMERIC locale comma decimal formatting CVE-2026-40082 Session Fixation via missing sessionregenerateid after login...

gstreamer1 -- multiple vulnerabilities

The GStreamer project reports: Multiple security issues were identified and fixed in the GStreamer framework. GStreamer-SA-2026-0030: Missing bounds checks in RTCP SDES packet parsing GStreamer-SA-2026-0031: Integer overflow and truncation in MXF demuxer GStreamer-SA-2026-0032: Out-of-bounds read...

chromium -- security fixes

Chrome Releases reports: This update includes 28 security fixes: 516731749 Critical CVE-2026-12007: Use after free Core. Reported by Google on 2026-05-26 516942828 Critical CVE-2026-12008: Use after free DigitalCredentials. Reported by Google on 2026-05-27 517332006 Critical CVE-2026-12009:...

Gitlab -- vulnerabilities

Gitlab reports: Improper Access Control issue in Group SAML Identity API impacts GitLab EE Cross-site Scripting issue in Analytics Dashboard impacts GitLab EE Denial of Service issue in Grape API JSON parsing middleware impacts GitLab CE/EE HTML injection issue in certain group setting fields...

chromium -- security fixes

Chrome Releases reports: This update includes 33 security fixes: 516496659 Critical CVE-2026-12437: Use after free in WebShare. 516947912 Critical CVE-2026-12438: Inappropriate implementation in WebView. 519728275 Critical CVE-2026-12439: Use after free in Digital Credentials. 519731619 Critical...

Erlang/OTP -- httpc leaks authentication headers on cross-host redirect

https://github.com/erlang/otp/security/advisories/GHSA-m75x-4vwg-ggjh reports: The HTTP client httpc in inets now removes Authorization, Proxy-Authorization, Cookie, Referer, and Origin headers when following a redirect to a different host or port, following the requirements of RFC 9110 section...

ldns -- CWE-346 Origin Validation Error

https://www.nlnetlabs.nl/downloads/ldns/CVE-2026-10846.txt reports: NLnet Labs ldns 1.2.0 up to and including versions 1.9.0, when used in applications as stub resolver over UDP, lacks matching the query destination address and port with the response source address and port. Furthermore not the...

Erlang/OTP -- stack overflow in ei_s_print_term for very large integer terms

https://github.com/erlang/otp/security/advisories/GHSA-xcxj-5pg2-v72j reports: Fixed a stack overflow in eisprintterm in erlinterface for very large integer terms more than 2000 hexadecimal digits long...

Erlang/OTP -- TLS distribution check_ip flag does not enforce same-LAN constraint

https://github.com/erlang/otp/security/advisories/GHSA-gp7x-mfv6-52cv reports: Erlang distribution over TLS run with the kernel checkip flag now properly enforces connecting nodes to be on the same LAN. Previously the constraint was not enforced...

jenkins -- multiple vulnerabilities

Jenkins Security Advisory 2026-06-10: SECURITY-3707 / CVE-2026-53435: Deserialization vulnerability High SECURITY-3711+3755 / CVE-2026-53436, CVE-2026-53437: Open redirect vulnerability Medium SECURITY-3712 / CVE-2026-53438: Missing permission check allows canceling queue items Medium SECURITY-37...

Erlang/OTP -- buffer overflow parsing SCTP ERROR/ABORT chunks

https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97 reports: A buffer overflow error when parsing SCTP ERROR or ABORT chunks has been fixed. This could lead to stack corruption and VM crash, but ultimately with hard work by an attacker be refined into maybe even remote code...

Erlang/OTP -- FTP passive-mode client does not validate server response IP

https://github.com/erlang/otp/security/advisories/GHSA-24cv-hwgr-37fq reports: The FTP client in passive mode did not validate the IP address returned in the server's response, allowing a compromised or malicious server to redirect the data connection to an arbitrary host. This enables server-sid...

Erlang/OTP -- SFTP READLINK discloses server filesystem paths

https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fh reports: The SSH SFTP daemon's handling of SSHFXPREADLINK returned symbolic link targets containing the server's absolute filesystem path, disclosing the backend root prefix to clients. The handler now strips the backend root...

Erlang/OTP -- timing-based username enumeration in SSH password authentication

https://github.com/erlang/otp/security/advisories/GHSA-3w6p-vwhf-wvp4 reports: A timing-based username enumeration vulnerability during password authentication with the userpasswords option has been fixed by performing a dummy PBKDF2 computation for invalid usernames, so authentication timing no...

rabbitmq-c -- multiple vulnerabilities

The rabbitmq-c project reports: CVE-2026-44236: A malicious AMQP server can send an undersized connection.tune.framemax value during the login handshake. The library does not enforce the protocol minimum frame size, reallocates its outbound buffer to an invalid size and then writes frame data...

OpenSSL -- Multiple vulnerabilities

The OpenSSL project reports: Eighteen vulnerabilities in OpenSSL library. Highest classification High...

FreeBSD -- Multiple vulnerabilities in OpenSSL

Problem Description: Multiple issues have been reported as part of this advisory with different issues affecting different OpenSSL versions and therefore different FreeBSD versions. Instead of exhaustively listing detailed writeups for each issue, please see the referenced advisory from OpenSSL...

FreeBSD -- Arm CPU errata may bypass page table permission changes

Problem Description: Some Arm CPUs have errata where the ordering of stores and the TLBI+DSB sequence may be incorrect. If one CPU stores to a virtual address while another CPU invalidates the translation for that address, the second CPU's TLBI+DSB may complete before the first CPU's store has be...

FreeBSD -- Multiple vulnerabilities in the sound(4) mmap path

Problem Description: The sound4 driver contained two memory-safety errors in its mmap2 support. First, dspmmapsingle validated the requested mapping by checking the sum of the user-supplied offset and length against the buffer size. This addition could overflow, so that a large offset and length...

FreeBSD -- Insufficient response validation in the ldns stub resolver

Problem Description: When used as a stub resolver over UDP, ldns failed to verify that a received response belonged to the outstanding query. It did not check that the response source address and port matched the query destination, that the transaction ID matched, or that the question section of...

FreeBSD -- Integer overflow in vt(4) CONS_HISTORY ioctl

Problem Description: The CONSHISTORY ioctl handler did not adequately validate the requested history size. A large value caused an integer overflow in the buffer size calculation, resulting in a heap allocation smaller than expected. Subsequent initialization of the buffer wrote beyond the end of...

FreeBSD -- Use-after-free bug in the IPV6_MSFILTER socket option handler

Problem Description: The kernel handler for IPV6MSFILTER dropped a serializing lock in order to copy the source-filter list from userspace, then reacquired the lock. During this window another thread could free the multicast filter structure, leaving the handler with a stale pointer to freed...

FreeBSD -- sigqueue(2) missing capability mode restriction

Problem Description: sigqueue2 was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation of kernsigqueue did not include a capability mode check restricting signal delivery to the calling process's own PID. Impact: A process in capability mode ca...

FreeBSD-kernel -- ASLR bypass for setuid executables via procctl(2)

Problem Description: The ELF image activator cleared per-process ASLR preference flags for setuid binaries after the code that computes the PIE base address, rather than before. As a result, a user-requested ASLR disable was still in effect at the point where the base address was chosen. Impact: ...

FreeBSD -- Flaw in Linuxulator execution of setugid binaries

Problem Description: The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the PSUGID process flag. During execve2, this flag is not yet set at the point where the auxiliary vector is constructed, so ATSECURE was incorrectly set to zero for set-user-ID and...