PYSEC-2026-1056 Potential double free of buffer during string decoding

Impact What kind of vulnerability is it? Who is impacted? When an error occurs while reallocating the buffer for string decoding, the buffer gets freed twice. Due to how UltraJSON uses the internal decoder, this double free is impossible to trigger from Python. Patches Has the problem been patche...

drm/amd/display: Use krealloc_array() in dal_vector_reserve()

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SUSE CVE-2026-53047

In the Linux kernel, the following vulnerability has been resolved: efi/capsule-loader: fix incorrect sizeof in phys array reallocation The krealloc call for capinfo-phys in eficapsulesetupinfo uses sizeofphysaddrt instead of sizeofphysaddrt, which might be causing an undersized allocation. The...

CVE-2026-58051 libssh2 - Free of Uninitialized Pointer in publickey List Cleanup

libssh2 through 1.11.1 grows its publickey list with SSH2REALLOC but does not zero-initialize new entries before parsing populates them, so a parse failure reaching the cleanup path leaves libssh2publickeylistfree operating on an uninitialized entry. A malicious SSH server offering the publickey...

efi/capsule-loader: fix incorrect sizeof in phys array reallocation

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CVE-2026-53228

A flaw was found in the Linux kernel's Simple Internet Transition SIT tunnel driver for IPv6. When processing network traffic with Generic Segmentation Offload GSO enabled, the driver may use a stale pointer to the inner IPv6 header after the socket buffer skb head has been reallocated. This can...

CVE-2026-56132

A flaw was found in libexpat, a library used for parsing XML data. An attacker could exploit a heap-based buffer overflow, a type of memory error, by providing specially crafted XML input. This vulnerability occurs when the library mishandles memory reallocation while processing XML, particularly...

PT-2026-53083

Name of the Vulnerable Software and Affected Versions libssh2 versions prior to 1.11.2 Description An issue exists in the public key parsing process where the software expands its public key list using SSH2 REALLOC but fails to zero-initialize new entries before they are populated. If a parse...

CVE-2026-52993

A flaw was found in the Linux kernel's Transparent Inter-Process Communication TIPC module. This vulnerability, a double-free, occurs when the tipcbufappend function incorrectly handles memory after a socket buffer skb reallocation. An attacker could potentially exploit this to cause system...

CVE-2026-53213 drm/vc4: fix krealloc() memory leak

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: fix krealloc memory leak Don't just overwrite the original pointer passed to krealloc with its return value without checking latter: MEM = kreallocMEM, SZ, GFP; If krealloc returns NULL, that erases the pointer to the...

Linux Distros Unpatched Vulnerability : CVE-2026-52993

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tipc: fix double-free in tipcbufappend tipcmsgvalidate can potentially reallocate the skb it is validating, freeing the old one. In tipcbufappend, it was being...

EUVD-2026-38861

In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipcbufappend tipcmsgvalidate can potentially reallocate the skb it is validating, freeing the old one. In tipcbufappend, it was being called with a pointer to a local variable which was a copy of the...

CVE-2026-52993

In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipcbufappend tipcmsgvalidate can potentially reallocate the skb it is validating, freeing the old one. In tipcbufappend, it was being called with a pointer to a local variable which was a copy of the...

CVE-2026-53047 efi/capsule-loader: fix incorrect sizeof in phys array reallocation

In the Linux kernel, the following vulnerability has been resolved: efi/capsule-loader: fix incorrect sizeof in phys array reallocation The krealloc call for capinfo-phys in eficapsulesetupinfo uses sizeofphysaddrt instead of sizeofphysaddrt, which might be causing an undersized allocation. The...

CVE-2026-53047

CVE-2026-53047 concerns the Linux kernel EFI capsule-loader heap allocation due to incorrect sizeof in phys array reallocation, potentially enabling a heap overflow on 32-bit PAEs. Public records in OSV show multiple vendor-specific patches and mitigations (e.g., Root Linux packages for Ubuntu 22...

CVE-2026-52993 tipc: fix double-free in tipc_buf_append()

In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipcbufappend tipcmsgvalidate can potentially reallocate the skb it is validating, freeing the old one. In tipcbufappend, it was being called with a pointer to a local variable which was a copy of the...

CVE-2026-52993

Summary (CVE-2026-52993): In the Linux kernel TIPC module, a double-free flaw occurs in tipc_buf_append() when tipc_msg_validate() reallocates an skb and the code incorrectly frees the original skb. The root cause is that the validation path may free a previously freed skb if reallocation occurs,...

CVE-2026-52993 tipc: fix double-free in tipc_buf_append()

In the Linux kernel, the following vulnerability has been resolved: tipc: fix double-free in tipcbufappend tipcmsgvalidate can potentially reallocate the skb it is validating, freeing the old one. In tipcbufappend, it was being called with a pointer to a local variable which was a copy of the...

Astra Linux – Vulnerability in freerdp3

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in yuvensurebuffer in libfreerdp/codec/h264.c, h264-width and h264-height were updated before the reallocation loop. If any winpralignedrecalloc call fails, the function returns FALSE, but width/height have...

Astra Linux – Vulnerability in expat

In libexpat before version 2.7.4, the doContent function does not properly determine the buffer size bufSize, as there is no check for integer overflow during the reallocation of the tag buffer...