Known vulnerabilities in Red Hat Enterprise Linux 6

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CVE list

CVE	Summary	Score	Published
CVE-2026-43964	Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash…	3.7 Low	May 4, 2026
CVE-2026-29004	BusyBox before commit 42202bf contains a heap buffer overflow vulnerability in the DHCPv6 client (udhcpc6) DNS_SERVERS…	7.2 High	May 4, 2026
CVE-2026-23918	Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol	Not rated	May 4, 2026
CVE-2026-33846	Gnutls: gnutls: denial of service via heap buffer overflow in dtls handshake fragment reassembly	7.5 High	May 4, 2026
CVE-2026-7598	A security vulnerability has been detected in libssh2 up to 1.11.1	6.9 Medium	May 1, 2026
CVE-2026-43038	In the Linux kernel, the following vulnerability has been resolved: ipv6: icmp: clear skb2->cb[] in…	9.8 Critical	May 1, 2026
CVE-2026-31709	In the Linux kernel, the following vulnerability has been resolved: smb: client: validate the whole DACL before…	8.8 High	May 1, 2026
CVE-2026-31703	In the Linux kernel, the following vulnerability has been resolved: writeback: Fix use after free in…	7.8 High	May 1, 2026
CVE-2026-5403	SBC codec crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code execution	7.8 High	Apr 30, 2026
CVE-2026-5656	Profile import path traversal in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible code…	7.0 High	Apr 30, 2026
CVE-2026-5405	RDP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service and possible…	7.8 High	Apr 30, 2026
CVE-2026-33845	Gnutls: gnutls: denial of service via dtls zero-length fragment	7.5 High	Apr 30, 2026
CVE-2026-3832	Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response	3.7 Low	Apr 30, 2026
CVE-2026-3833	Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison	6.5 Medium	Apr 30, 2026
CVE-2025-14576	Insufficient validation of node IDs in Qt SVG module allows arbitrary QML/JavaScript code injection when loading…	7.4 High	Apr 30, 2026
CVE-2026-5402	TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution	8.8 High	Apr 30, 2026
CVE-2026-42198	pgjdbc is an open source postgresql JDBC Driver	7.5 High	Apr 29, 2026
CVE-2026-37555	An issue was discovered in libsndfile 1.2.2 IMA ADPCM codec	7.5 High	Apr 29, 2026
CVE-2026-7324	Memory safety bugs present in Thunderbird 150.0.0	7.3 High	Apr 28, 2026
CVE-2026-7323	Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0	7.3 High	Apr 28, 2026
CVE-2026-7322	Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0	7.3 High	Apr 28, 2026
CVE-2026-7320	Information disclosure due to incorrect boundary conditions in the Audio/Video component	7.5 High	Apr 28, 2026
CVE-2026-31663	In the Linux kernel, the following vulnerability has been resolved: xfrm: hold dev ref until after transport_finish…	7.8 High	Apr 24, 2026
CVE-2026-31641	In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix RxGK token loading to check bounds…	7.8 High	Apr 24, 2026
CVE-2026-31617	In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_ncm: validate minimum block_len in…	5.5 Medium	Apr 24, 2026

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