ZBar commit 2ea2ca58 contains an undefined-behavior vulnerability in the Code 128 decode6() function. When processing specially crafted Code 128 input, decode_e() can return -1 for an invalid edge pattern, and decode6() subsequently left-shifts this negative signed value while constructing the edge signature. The operation invokes undefined behavior and can terminate trap-mode UBSan builds with SIGILL, resulting in denial of service.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://github.com/mchehab/zbar/issues/336 |
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History
Wed, 07 Oct 2026 10:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | ZBar Code 128 Decoder Undefined Behavior Allowing SIGILL Crash |
Wed, 07 Oct 2026 08:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Undefined Behavior in ZBar Code 128 Decoder Leads to SIGILL Crash | |
| Weaknesses | CWE-20 |
Wed, 07 Oct 2026 06:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 06 Oct 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-682 | |
| Metrics |
cvssV3_1
|
Sun, 27 Sep 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mchehab
Mchehab zbar |
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| Vendors & Products |
Mchehab
Mchehab zbar |
Sat, 26 Sep 2026 05:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Undefined Behavior in ZBar Code 128 Decoder Leads to SIGILL Crash | |
| Weaknesses | CWE-20 |
Thu, 24 Sep 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | ZBar commit 2ea2ca58 contains an undefined-behavior vulnerability in the Code 128 decode6() function. When processing specially crafted Code 128 input, decode_e() can return -1 for an invalid edge pattern, and decode6() subsequently left-shifts this negative signed value while constructing the edge signature. The operation invokes undefined behavior and can terminate trap-mode UBSan builds with SIGILL, resulting in denial of service. | |
| References |
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Status: PUBLISHED
Assigner: mitre
Published: 2026-09-24T00:00:00.000Z
Updated: 2026-10-06T17:42:37.691Z
Reserved: 2026-09-10T00:00:00.000Z
Link: CVE-2026-88371
Updated: 2026-10-06T15:42:32.192Z
Status : Deferred
Published: 2026-09-24T16:17:14.100
Modified: 2026-10-06T18:16:57.523
Link: CVE-2026-88371
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