CVE-2026-89490 ocfs2: fix readdir position truncation on 32-bit kernels

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix readdir position truncation on 32-bit kernels In ocfs2dirforeachblkel, the directory cookie position is rebuilt with ctx-pos = ctx-pos & sb-sblocksize - 1 | offset; ctx-pos is lofft signed 64-bit, while sb-sblocksize i...

CVE-2026-89490

CVE-2026-89490 affects the ocfs2 filesystem in the Linux kernel on 32-bit systems. In ocfs2_dir_foreach_blk_el(), the directory position mask derived from sb->s_blocksize (a 32-bit unsigned long) is zero-extended to 64 bits when ANDed with the loff_t-typed ctx->pos, silently clearing the hi...

CVE-2026-89476

In the Linux kernel, the following vulnerability has been resolved: sctp: fix stream-outcnt underflow on duplicate RECONF responses A cached RECONF chunk may contain more than one request parameter. A duplicate response can therefore find and process the same ADDOUT request again while another...

EUVD-2026-76382

In the Linux kernel, the following vulnerability has been resolved: sctp: fix stream-outcnt underflow on duplicate RECONF responses A cached RECONF chunk may contain more than one request parameter. A duplicate response can therefore find and process the same ADDOUT request again while another...

CVE-2026-89476

CVE-2026-89476 affects the Linux kernel's SCTP (Stream Control Transmission Protocol) implementation. A cached RECONF chunk may contain multiple request parameters, so a duplicate response can re-process the same ADD_OUT request while another parameter is still outstanding, rolling back stream-&g...

CVE-2026-89476 sctp: fix stream->outcnt underflow on duplicate RECONF responses

In the Linux kernel, the following vulnerability has been resolved: sctp: fix stream-outcnt underflow on duplicate RECONF responses A cached RECONF chunk may contain more than one request parameter. A duplicate response can therefore find and process the same ADDOUT request again while another...

CVE-2026-81000 net: tun: bound receive headroom

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

CVE-2026-81000

CVE-2026-81000 affects the Linux kernel TUN/TAP driver . The root cause is an integer underflow in tun_get_user(): when Open vSwitch (OVS) propagates an oversized headroom request from another port, SKB_MAX_HEAD(align) underflows, causing tun_alloc_skb() to place skb->data outside the allocate...

EUVD-2026-76323

In the Linux kernel, the following vulnerability has been resolved: net: tun: bound receive headroom tungetuser uses tun-align both as skb headroom and when choosing how much packet data to keep linear. OVS can propagate an oversized headroom request from another port to TUN or TAP. When align is...

CVE-2026-18495

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

DEBIAN-CVE-2026-18495

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

AZL-101736 CVE-2026-18495 affecting package libtiff 4.6.0-14

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

CVE-2026-18495

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

UBUNTU-CVE-2026-18495

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

CVE-2026-18495

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the "tiff2pdf" utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit "StripByteCounts" value to be truncated to a 32-b...

CVE-2026-18495

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

EUVD-2026-76166

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

CVE-2026-18495 Libtiff: libtiff: heap-buffer overflow via numeric truncation in the jpeg raw passthrough

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

CVE-2026-18495

A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the tiff2pdf utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit StripByteCounts value to be truncated to a 32-bit...

CVE-2026-18495

CVE-2026-18495 is a heap-buffer overflow in the tiff2pdf utility within libtiff , triggered by an integer truncation error when processing a crafted BigTIFF file. A 64-bit StripByteCounts value is truncated to 32 bits, causing an undersized memory allocation followed by an out-of-bounds copy, lea...