[SECURITY] [DSA 6493-1] libevent security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6493-1 [email protected] https://www.debian.org/security/ Aron Xu September 11, 2026 https://www.debian.org/security/faq -...

SUSE CVE-2026-63383

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

Linux Distros Unpatched Vulnerability : CVE-2026-63495

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Libevent is an event notification library. From 2.2.0-alpha-dev until 2.2.2-alpha, the libevent WebSocket server in ws.c accumulates fragmented frames in...

Linux Distros Unpatched Vulnerability : CVE-2026-63383

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when...

CVE-2026-63495

Libevent is an event notification library. From 2.2.0-alpha-dev until 2.2.2-alpha, the libevent WebSocket server in ws.c accumulates fragmented frames in evws-incompleteframes without enforcing a total message-size limit. An unauthenticated remote client can repeatedly send fragmented WebSocket...

AZL-96921 CVE-2026-63383 affecting package libtevent 0.14.1-1

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

AZL-97521 CVE-2026-63383 affecting package mysql for versions less than 8.0.46-2

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

AZL-96953 CVE-2026-63381 affecting package libevent for versions less than 2.1.13-1

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has a use-after-free in buffer.c when evbufferaddbufferreference processes an output buffer whose outtotallen is zero. evbufferfreeallchains frees the initial empty chain without resetting outbuf-first,...

AZL-97551 CVE-2026-63383 affecting package ntp for versions less than 4.2.8p17-3

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

DEBIAN-CVE-2026-63383

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

CVE-2026-63383

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

AZL-96938 CVE-2026-63383 affecting package libevent for versions less than 2.1.13-1

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

AZL-96915 CVE-2026-63381 affecting package libtevent 0.14.1-1

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has a use-after-free in buffer.c when evbufferaddbufferreference processes an output buffer whose outtotallen is zero. evbufferfreeallchains frees the initial empty chain without resetting outbuf-first,...

CVE-2026-63495 Libevent: Unbounded memory accumulation in WebSocket server via fragmented frames

Libevent is an event notification library. From 2.2.0-alpha-dev until 2.2.2-alpha, the libevent WebSocket server in ws.c accumulates fragmented frames in evws-incompleteframes without enforcing a total message-size limit. An unauthenticated remote client can repeatedly send fragmented WebSocket...

CVE-2026-63383 Libevent: decode_tag_internal() can lead to out-of-bounds read

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

CVE-2026-63383 Libevent: decode_tag_internal() can lead to out-of-bounds read

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

CVE-2026-63383

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

CVE-2026-63383

In libevent prior to 2.1.13 and 2.2.2-alpha, decode_tag_internal() in event_tagging.c requests at most five bytes via evbuffer_pullup but iterates over the full logical buffer length. A fragmented evbuffer holding a six-byte malformed tag can advance past the pullup window, causing an out-of-boun...

PT-2026-76579

Name of the Vulnerable Software and Affected Versions Libevent versions prior to 2.1.13 Libevent versions prior to 2.2.2-alpha Description A use-after-free issue exists in buffer.c when the evbuffer add buffer reference function processes an output buffer where the out total len variable is zero...

PT-2026-76581

Name of the Vulnerable Software and Affected Versions Libevent versions prior to 2.1.13 Libevent versions prior to 2.2.2-alpha Description An out-of-bounds read can occur in the event tagging.c file when the decode tag internal function requests a maximum of five bytes from evbuffer pullup but...