RHSA-2026:57189 Red Hat Security Advisory: bind security update

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CVE-2026-18917

A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer...

EUVD-2026-63239

A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer...

CVE-2026-18917 Libvirt: integer overflow in nodegetfreepages rpc handler leading to heap buffer overflow

A flaw was found in libvirt. An unprivileged local user could exploit an integer overflow vulnerability in the NodeGetFreePages RPC handler. This flaw allows crafted values to bypass a size check, leading to an undersized memory buffer. Subsequently, real NUMA node data can overwrite this buffer...

CVE-2026-18917

A heap buffer overflow in libvirt's NodeGetFreePages RPC handler allows an unprivileged local user to bypass a size check via crafted integer values, causing an undersized buffer to be overwritten with real NUMA node data, corrupting the root daemon's memory and potentially enabling denial of ser...

CVE-2026-70461

A flaw was found in rsync. Remote unauthenticated attackers can exploit a heap out-of-bounds write vulnerability by supplying a crafted files-from entry. This entry, containing both an interior and trailing backslash, causes the addimpliedinclude function to under-count the trailing backslash whe...

CVE-2026-70455

A denial-of-service flaw in rsync allows remote attackers to exhaust system memory and CPU. By sending requests using the --zt Zstandard compression alias, an attacker can bypass security directives and spawn an excessive number of worker threads. Mitigation If the rsync daemon is unused,...

CVE-2026-77014

A flaw was found in libsoup's SoupServer HTTP Range header processing. The sortranges comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INTMAX. This causes silent omission of requested byte ranges...

Vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway

Citrix has identified vulnerabilities in NetScaler ADC and NetScaler Gateway. The vulnerability with identifier CVE-2026-19489 involves a memory overflow in NetScaler ADC and NetScaler Gateway when the products are configured as SIP ALG within a Large Scale NAT LSN group. This memory allocation...

vulnerabilities in Apple macOS

Apple has identified vulnerabilities in macOS Tahoe 26.6.2. These vulnerabilities relate to various aspects of memory management, input validation, and state management within Apple’s operating systems and Safari browser. Some of these vulnerabilities allow malicious actors to cause memory...

kernel: smb: client: validate DFS referral PathConsumed

A flaw was found in the Linux kernel's Server Message Block SMB client. A remote attacker could send a specially crafted SMB response containing a malformed Distributed File System DFS referral. This could cause the PathConsumed value to exceed the search name length, leading to an out-of-bounds...

kernel: drm/i915: Fix potential UAF in TTM object purge

A flaw was found in the Linux kernel's Intel i915 graphics driver drm/i915. This use-after-free UAF vulnerability occurs during the TTM object purge operation. An attacker could potentially exploit this to cause a system crash, leading to a denial of service...

kernel: smb: client: fix query_info() replay double-free

A flaw was found in the Linux kernel's Server Message Block SMB client. This vulnerability, a double-free error, occurs when the queryinfo replay mechanism attempts to free a response buffer that has already been released. This can happen if an error occurs during the initialization of an SMB2...

kernel: sched/psi: fix race between file release and pressure write

A flaw was found in the Linux kernel's Pressure Stall Information PSI subsystem. A race condition exists between the file release and pressure write operations, specifically concerning the priv member of struct kernfsopenfile. This can lead to a use-after-free vulnerability or a NULL dereference,...

kernel: drm/amdgpu: Refactor amdgpu_gem_va_ioctl for Handling Last Fence Update and Timeline Management v4

A flaw was found in the Linux kernel's AMD GPU amdgpu driver. Incorrect management of graphics memory dmafence references within the amdgpugemvaioctl function can lead to a reference count underflow and a use-after-after-free condition. A local attacker could exploit this vulnerability to trigger...

kernel: smb: client: fix double-free in SMB2_open() replay

A flaw was found in the Linux kernel's Server Message Block SMB client. A double-free vulnerability exists in the SMB2open replay mechanism. This occurs when a response-bearing attempt returns a replayable error and frees its response buffer, and then the cleanup process attempts to free the same...

kernel: udf: fix partition descriptor append bookkeeping

A flaw was found in the Linux kernel's Universal Disk Format UDF filesystem. A remote attacker could exploit this vulnerability by tricking a user into mounting a specially crafted UDF image containing repeated partition descriptors. This could lead to a heap out-of-bounds write, potentially...

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

A flaw was found in the Linux kernel's drm/amd/display component. The dalvectorreserve function calculates memory allocation size using 32-bit arithmetic, which can lead to an integer overflow. This overflow causes a smaller memory buffer to be allocated than intended, resulting in a heap overflo...

kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd()

A flaw was found in the Linux kernel's iSCSI Internet Small Computer System Interface target subsystem. This vulnerability involves a buffer overread and a double-free error when processing iSCSI Text commands. A remote attacker could exploit these issues by sending specially crafted network...

kernel: ip6_gre: Use cached t->net in ip6erspan_changelink()

A flaw was found in the Linux kernel's ip6gre module. An unprivileged user could exploit this vulnerability by migrating a network device, causing the ip6erspanchangelink function to incorrectly handle network namespace references. This error leads to a use-after-free condition when the original...