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Ubuntu security notices

http://www.ubuntu.com/usn/rss.xml (RSS订阅地址)

USN-8716-2: FFmpeg vulnerabilities

USN-8716-1 fixed several vulnerabilities in FFmpeg. This update provides the corresponding fix for Ubuntu 26.04 LTS. Original advisory details: It was discovered that FFmpeg incorrectly handled certain crafted media files in the VobSub subtitle demuxer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-64830) It was discovered that FFmpeg incorrectly handled certain crafted HEVC bitstreams in the Vulkan HEVC hardware decoder. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-64831) It was discovered that FFmpeg incorrectly handled certain crafted video files in the NVDEC hardware decoder. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-64832) It was discovered that FFmpeg incorrectly handled certain crafted DTS audio streams in the S/PDIF muxer. An attacker could possibly use this issue to cause a denial of service or expose sensitive information. (CVE-2026-64833) It was discovered that FFmpeg incorrectly handled certain crafted RTP/ASF streams. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-64834) It was discovered that FFmpeg incorrectly handled certain crafted ADX audio files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-64835) It was discovered that FFmpeg incorrectly handled certain crafted AVI files in the TDSC video decoder. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-65703) It was discovered that FFmpeg incorrectly handled certain crafted ffconcat files processed via the TY demuxer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-65704) It was discovered that FFmpeg incorrectly handled certain crafted video streams in the vf_floodfill video filter. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-65705) It was discovered that FFmpeg incorrectly handled certain crafted NV12 video frames in the vf_swaprect video filter. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-65706) It was discovered that FFmpeg incorrectly handled certain crafted hvcC NAL arrays in the HEVC parser. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-75141) It was discovered that FFmpeg incorrectly handled certain crafted MPEG system headers. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-75142) It was discovered that FFmpeg incorrectly handled certain crafted network input in the librist protocol handler. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-75143) It was discovered that FFmpeg incorrectly handled certain crafted Dirac data units in the VC2 HQ RTP packetizer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-75144) It was discovered that FFmpeg incorrectly handled certain crafted DASH manifests. An attacker could possibly use this issue to cause a denial of service or expose sensitive information. (CVE-2026-75146)

2026/9/9
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USN-8739-1: ImageMagick vulnerabilities

It was discovered that ImageMagick incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2026-56366, CVE-2026-56368, CVE-2026-56371, CVE-2026-56373) It was discovered that ImageMagick incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 22.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-56370) It was discovered that ImageMagick incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service or expose sensitive information. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2026-56378) It was discovered that ImageMagick incorrectly handled certain images. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2026-56379) It was discovered that ImageMagick incorrectly handled memory allocation in certain operations. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-61465) It was discovered that ImageMagick incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-61857) It was discovered that ImageMagick incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-61863, CVE-2026-61864, CVE-2026-61865, CVE-2026-61870) It was discovered that ImageMagick incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-61866) It was discovered that ImageMagick incorrectly handled certain images on 32-bit systems. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-62946)

2026/9/8
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USN-8670-3: curl vulnerability

USN-8670-1 fixed a vulnerability in curl. This update provides the corresponding update for Ubuntu 26.04 LTS. Original advisory details: Joshua Rogers discovered that curl incorrectly handled reusing connections when client certificate settings changed. This could result in the wrong client certificates being used, contrary to expectations.

2026/9/8
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USN-8679-2: Vim vulnerability

USN-8679-1 fixed a vulnerability in Vim. This update provides the corresponding update for Ubuntu 26.04 LTS. Original advisory details: It was discovered that Vim incorrectly handled certain tags files. An attacker could possibly use this issue to execute arbitrary code.

2026/9/8
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USN-8738-1: FFmpeg vulnerabilities

It was discovered that FFmpeg incorrectly handled certain video frames when using the hqdn3d filter. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-66036) Adrian Junge discovered that FFmpeg incorrectly handled certain compressed video files. An attacker could possibly use this issue to expose sensitive information. (CVE-2026-66038) Adrian Junge discovered that FFmpeg incorrectly handled certain audio files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-66039) Adrian Junge discovered that FFmpeg incorrectly handled certain subtitle files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-70628) Adrian Junge discovered that FFmpeg incorrectly handled certain video files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-70632)

2026/9/8
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USN-8737-1: GNU C Library vulnerabilities

It was discovered that GNU C Library had a buffer overflow in the strfmon function when handling right-justification padding. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-19499) It was discovered that GNU C Library had an out-of-bounds stack array access in the tdelete function. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-19542) It was discovered that GNU C Library incorrectly handled memory when calling wordexp with the WRDE_APPEND flag. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-6368) It was discovered that GNU C Library had a stack overflow in the wordexp function when expanding paths beginning with a tilde followed by a long username. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-6791) It was discovered that GNU C Library had a hang in the SHIFT_JISX0213 character set converter. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-77117) It was discovered that GNU C Library had a hang in the EUC_JISX0213 character set converter. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-80489)

2026/9/8
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USN-8736-1: Perl vulnerabilities

It was discovered that Perl incorrectly handled certain large inputs during regular expression matching. An attacker could possibly use this issue to trigger out-of-bounds heap reads or writes, resulting in a denial of service or arbitrary code execution. (CVE-2026-15534) It was discovered that Perl incorrectly handled certain regular expression containing alternative matching branches. An attacker could possibly use this issue to cause incorrect regular expression matches, resulting in security restrictions being bypassed. (CVE-2026-19487)

2026/9/8
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USN-8735-1: HSQLDB vulnerability

It was discovered that HSQLDB incorrectly handled specially crafted database files. An attacker could possibly use this issue to overwrite arbitrary files.

2026/9/8
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USN-8734-1: PHP vulnerabilities

It was discovered that PHP incorrectly handled Apache map decoding in SOAP servers with a typemap configured. A remote attacker could use this issue to cause a NULL pointer dereference, resulting in a denial of service. (CVE-2026-7262) It was discovered that PHP incorrectly handled signed integer overflow in the metaphone() function. An attacker could use this issue to cause an out-of-bounds read, resulting in a denial of service. (CVE-2026-7568) It was discovered that PHP incorrectly handled circular symbolic links in phar archives. An attacker could use this issue to cause unbounded recursion, resulting in a denial of service. (CVE-2026-7260) It was discovered that PHP incorrectly escaped backslashes in the pgsql extension when standard_conforming_strings is enabled. An attacker could use this issue to perform SQL injection via a backslash breakout. (CVE-2026-17543)

2026/9/7
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USN-8733-1: Gzip vulnerabilities

Michał Majchrowicz and Marcin Wyczechowski discovered that Gzip's gzexe utility created temporary files in an insecure manner when mktemp was unavailable. A local attacker could possibly use this issue to overwrite arbitrary files. (CVE-2026-41991) Elias Hasas, Michał Majchrowicz and Marcin Wyczechowski discovered that Gzip incorrectly handled certain compressed files. An attacker could possibly use this issue to obtain sensitive information or cause Gzip to crash, resulting in a denial of service. (CVE-2026-41992)

2026/9/7
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