CVE-2026-101337

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD...

DEBIAN-CVE-2026-101337

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD...

CVE-2026-101338 Stack overwrite from a specially crafted and formatted SVCB or HTTPS RR

When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64 decoder can write attacker controlled data of unlimited size. Zone files which are written out by NSD itself, such as for zones for which t...

EUVD-2026-100983

When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64 decoder can write attacker controlled data of unlimited size. Zone files which are written out by NSD itself, such as for zones for which t...

CVE-2026-101338

The NSD name server is vulnerable to a stack-based buffer overflow (CWE-121) when processing specially crafted SVCB or HTTPS resource records (RR ). If the wire format RDATA is filled to its limit, an additional ECH parameter can overwrite the stack. Furthermore, if the limit is exceeded, the bas...

CVE-2026-101338

When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64 decoder can write attacker controlled data of unlimited size. Zone files which are written out by NSD itself, such as for zones for which t...

CVE-2026-101338 Stack overwrite from a specially crafted and formatted SVCB or HTTPS RR

When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64 decoder can write attacker controlled data of unlimited size. Zone files which are written out by NSD itself, such as for zones for which t...

CVE-2026-101337 Stack overwrite from specially formatted base64 RDATA field

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD...

EUVD-2026-100982

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD...

CVE-2026-101337 Stack overwrite from specially formatted base64 RDATA field

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD...

CVE-2026-101337

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD...

CVE-2026-101337

The NSD (Name Server Daemon) is vulnerable to a stack-based buffer overflow (CWE-121 ) due to an incorrect calculation of tokens when base64 data is split into pieces of 3 characters or less. This flaw causes the system to produce 0 bytes incorrectly, allowing an attacker to overwrite the stack w...

CVE-2026-101337

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD...

CVE-2026-101337

When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the stack with up to 64K of attacker controlled data. Zone files which are written out by NSD itself, such as for zones for which the NSD...

Linux Distros Unpatched Vulnerability : CVE-2026-101337

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When base64 data is split up in pieces, of 3 character or less, tokens were incorrectly calculated to produce 0 bytes. This enables attackers to overwrite the...

Linux Distros Unpatched Vulnerability : CVE-2026-101338

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64...

CVE-2026-101338: Stack-based Buffer Overflow

When a SVCB or HTTPS RR has filled the wire format RDATA up to the brim, another ECH parameter may overwrite the stack, and once beyond the limit, the base64 decoder can write attacker controlled data of unlimited size. Zone files which are written out by NSD itself, such as for zones for which t...

PT-2026-113785

Name of the Vulnerable Software and Affected Versions NSD affected versions not specified Description An issue exists where a SVCB or HTTPS Resource Record RR that fills the wire format RDATA to capacity can allow an ECH parameter to overwrite the stack. Once the limit is exceeded, the base64...

PT-2026-113784

Name of the Vulnerable Software and Affected Versions NSD versions 4.10.0 through 4.15.2 Description An issue occurs when base64 data is split into pieces of 3 characters or less, causing tokens to be incorrectly calculated as 0 bytes. This allows an attacker to overwrite the stack with up to 64K...

K000163654: GLib vulnerabilities CVE-2026-1484 and CVE-2026-1489

Security Advisory Description CVE-2026-1484 A flaw was found in the GLib Base64 encoding routine when processing very large input data. Due to incorrect use of integer types during length calculation, the library may miscalculate buffer boundaries. This can cause memory writes outside the allocat...