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CVE-2026-123151

Medium priority
Needs evaluation

A flaw was found in the GNU debugger (GDB). When GDB connects to a remote debug target, a malicious target can cause GDB to overflow a buffer on the stack while parsing the target's replies. This can crash GDB or potentially allow...

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-121997

Medium priority
Needs evaluation

A heap buffer overflow in gdbserver's QTDPsrc packet handler allows an unauthenticated remote attacker to achieve native code execution in the gdbserver process. The vulnerability results from a mismatch between a packet's...

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-121996

Medium priority
Needs evaluation

A length validation flaw in gdbserver's agent-expression parser allows an unauthenticated remote attacker to read uninitialized heap memory from the gdbserver process and cause a denial of service. Disclosed heap content includes...

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-121995

Medium priority
Needs evaluation

A stack buffer overflow in the GDB client's tracepoint upload handler allows an attacker-controlled debug stub to corrupt stack memory automatically during connection setup. The overflow results from GDB reading beyond the current...

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-121994

Medium priority
Needs evaluation

A stack buffer overflow in the GDB client's remote protocol handler allows an attacker-controlled debug target to execute arbitrary code in the GDB process. The vulnerability exists in fetch_register_using_p, which decodes a...

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-13732

Medium priority
Needs evaluation

A flaw was found in GDB's STABS debug format parser. The read_member_functions() function in gdb/stabsread.c contains a linked list removal bug in the code that separates destructor and non-destructor member functions of C++...

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2024-36699

Medium priority
Ignored

Rejected reason: DO NOT USE THIS CVE RECORD. ConsultIDs: none. Reason: This record was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: none.

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb — Not affected Not affected Not affected Not affected
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CVE-2023-39130

Low priority

Some fixes available 4 of 5

GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a heap buffer overflow via the function pe_as16() at /gdb/coff-pe-read.c.

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb — Not affected Fixed Fixed Fixed
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CVE-2023-39129

Low priority

Some fixes available 4 of 5

GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a heap use after free via the function add_pe_exported_sym() at /gdb/coff-pe-read.c.

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb — Not affected Fixed Fixed Fixed
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CVE-2023-39128

Low priority

Some fixes available 4 of 5

GNU gdb (GDB) 13.0.50.20220805-git was discovered to contain a stack overflow via the function ada_decode at /gdb/ada-lang.c.

1 affected package

gdb

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
gdb — Not affected Fixed Fixed Fixed
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