Medium
libsixel — security advisory
In Libsixel prior to and including v1.10.3, a NULL pointer dereference in the stb_image.h component of libsixel allows attackers to cause a denial of service (DOS) via a crafted PICT file.
- Products
- libsixel
- Affected versions
- 1.10.3-2, 1.10.3-3, 1.10.3-3build1, 1.10.5-1, 1.10.5-1build1, 1.4.2-1, 1.5.2-2, 1.7.3-1, 1.8.2-1, 1.8.2-2.1, 1.8.6-2, 1:1.8.7-r2-1
- Fixed versions
- Not specified
- CVEs
- CVE-2021-45340
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:35 UTC · Revision 1
Source evidence
In Libsixel prior to and including v1.10.3, a NULL pointer dereference in the stb_image.h component of libsixel allows attackers to cause a denial of service (DOS) via a crafted PICT file.
osv:UBUNTU-CVE-2021-45340
libsixel
Fixed versions: Not specified
libsixel
Fixed versions: Not specified
libsixel
Fixed versions: Not specified
libsixel
Fixed versions: Not specified
libsixel
Fixed versions: Not specified
libsixel
Fixed versions: Not specified
libsixel
Fixed versions: Not specified
libsixel
Fixed versions: Not specified
Complete source record
{
"id": "e391c17147ace345e94b105d4335fba80401738eed72e39d990a4b94ead2c212",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-45340",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2021-45340",
"summary": "In Libsixel prior to and including v1.10.3, a NULL pointer dereference in the stb_image.h component of libsixel allows attackers to cause a denial of service (DOS) via a crafted PICT file.",
"evidence": "osv:UBUNTU-CVE-2021-45340",
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"modified": "2026-10-17T12:55:47.752867165Z",
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