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CVE-2026-6928

Multiple Vulnerabilities in IBM Concert Software

IBM Concert 1.0.0 through 3.0.0 references or accesses memory after it has been freed. This allows an attacker who can influence program execution or input may exploit this condition to corrupt memory, cause application crashes, or execute arbitrary code.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Ibm Linux
Products
Concert Linux Kernel
CVE-2026-74766

Net::IDN::Punycode versions from 2.301 before 2.590 for Perl allow a heap use-after-free via a decoded code point that reallocates the output buffer in decode_punycode

Net::IDN::Punycode versions from 2.301 before 2.590 for Perl allow a heap use-after-free via a decoded code point that reallocates the output buffer in decode_punycode. The XS backend inserts each decoded code point into the string buffer of the scalar it returns. decode_punycode computes the insertion pointer first and only then grows the buffer when the code point does not fit. The growth reallocates the buffer and updates every pointer except the insertion pointer, so the move that follows and the write of the code point go through a freed pointer. The buffer starts at twice the label length, and a code point above U+FFFF takes four bytes in the output, so a label of such code points outgrows it and forces the reallocation. Version 2.301, the fix for CVE-2016-15059, introduced the defect. Only the XS backend is affected. Decoding an attacker-supplied punycode label reads and writes freed heap memory.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
Vendors
Perl
Products
Net::idn::punycode
CVE-2024-44986

ipv6: fix possible UAF in ip6_finish_output2()

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in ip6_finish_output2() If skb_expand_head() returns NULL, skb has been freed and associated dst/idev could also have been freed. We need to hold rcu_read_lock() to make sure the dst and associated idev are alive.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Debian Linux
Products
Debian Linux Linux Kernel
CVE-2026-6794

Multiple Vulnerabilities in IBM Concert Software

IBM Concert 1.0.0 through 3.0.0 has a double free vulnerability that exists due to incorrect memory management. A local attacker can exploit this flaw to corrupt heap memory and execute arbitrary code in the context of the affected process.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Ibm Linux
Products
Concert Linux Kernel
CVE-2026-70582

Windows Management Instrumentation Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 23 more
CVE-2026-93709

Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler

Dancer2 versions before 2.2.0 for Perl serve a layout as a page when an equivalent spelling of its path misses the guard in the AutoPage handler. The handler compares the request path against the layout directory name as text, while the lookup that follows canonicalises it. A doubled slash, a dot segment, a percent-encoded slash, or a different capitalisation on a case-insensitive filesystem therefore misses the guard. The handler is off by default, enabled with auto_page. The layout wrapping every page is already public, so this discloses one of the application's other layouts.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Perldancer
Products
Dancer2
CVE-2026-45751

Suricata detect/transform: use-after-free in dotprefix transform

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's inspection-buffer helper could leave an inspection pointer referencing freed memory after a chained transform caused the backing buffer to be reallocated. The issue is reached during a specific network traffic processing, and requires a specific but not malicious rule. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, avoid rules that chain `dotprefix` transform after another one.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Oisf
Products
Suricata
CVE-2026-45752

Suricata detect/transform: use-after-free in decompress transforms

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, when certain detection transforms are chained, the decompress transform pipeline could read from an inspection buffer after it had been reallocated and freed. The issue is reached during network traffic processing, but requires a malicious rule as Suricata will crash whatever the traffic. Version 8.0.5 contains a fix. As a workaround, avoid rules that chain `gunzip` or `zlib_deflate` with `max-size` bigger than 4096 after another transform.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Oisf
Products
Suricata
CVE-2026-98060

bpf: Reject resilient lock operations in rbtree callbacks

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject resilient lock operations in rbtree callbacks __bpf_rbtree_add() keeps parent and link pointers live across calls to the program-supplied comparison callback. The verifier therefore requires the root's lock to remain held throughout the callback. The helper path enforces this rule for bpf_spin_lock() and bpf_spin_unlock(), but the resilient lock kfunc argument path does not. Since resilient locks may protect BPF rbtree roots, a callback can release the root lock and let another CPU remove and free the node referenced by the in-progress tree walk. The walk then resumes using freed pointers. Reject resilient lock kfuncs in an rbtree comparison callback, matching the existing policy for the spin lock helpers. Resilient-lock-protected trees remain valid when their comparison callbacks leave lock state alone.

CVSS 3.1 · 7.0 High EPSS < 1% KEV · Not listed
Vendors
Linux
Products
Linux Kernel