FFmpeg 2.1 through 9.0.2 contains an uninitialized memory disclosure vulnerability in pcx_decode_frame() in libavcodec/pcx.c that leaves scanline buffer bytes uncleared when input ends early. Attackers can supply a crafted truncated RLE-compressed or uncompressed PCX image to leak heap memory contents through the decoded pixels.
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Affected Vendors & Products
References
History
Wed, 11 Nov 2026 02:45:00 +0000
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| Description | FFmpeg 2.1 through 9.0.2 contains a use of uninitialized resource vulnerability in the PCX decoder that allows attackers to leak heap memory through truncated RLE scanlines. Attackers can craft a PCX image whose RLE data ends early, causing pcx_decode_frame() to copy uninitialized av_malloc() buffer contents into visible decoded pixels. | FFmpeg 2.1 through 9.0.2 contains an uninitialized memory disclosure vulnerability in pcx_decode_frame() in libavcodec/pcx.c that leaves scanline buffer bytes uncleared when input ends early. Attackers can supply a crafted truncated RLE-compressed or uncompressed PCX image to leak heap memory contents through the decoded pixels. |
Mon, 02 Nov 2026 18:30:00 +0000
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ssvc
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Sun, 01 Nov 2026 12:30:00 +0000
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threat_severity
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threat_severity
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Sun, 01 Nov 2026 01:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | FFmpeg 2.1 through 9.0.2 contains a use of uninitialized resource vulnerability in the PCX decoder that allows attackers to leak heap memory through truncated RLE scanlines. Attackers can craft a PCX image whose RLE data ends early, causing pcx_decode_frame() to copy uninitialized av_malloc() buffer contents into visible decoded pixels. | |
| Title | FFmpeg 2.1 through 9.0.2 Uninitialized Memory Leak via PCX Decoder | |
| First Time appeared |
Ffmpeg
Ffmpeg ffmpeg |
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| Weaknesses | CWE-908 | |
| CPEs | cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Ffmpeg
Ffmpeg ffmpeg |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-11-01T00:57:10.036Z
Updated: 2026-11-11T02:37:13.267Z
Reserved: 2026-10-31T22:05:57.768Z
Link: CVE-2026-120244
Updated: 2026-11-02T17:04:03.157Z
Status : Awaiting Analysis
Published: 2026-11-01T01:17:17.787
Modified: 2026-11-02T19:34:23.993
Link: CVE-2026-120244