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Advisory [CVE-2026-64444] fix OOB read in OnAssocRsp IE loop
fix OOB read in OnAssocRsp() IE loop. Red Hat rates this a security issue. Weakness: CWE-125.
Advisory [CVE-2026-64498] free scan_mask on buffer release
free scan_mask on buffer release. Red Hat rates this a security issue. Weakness: CWE-772.
Advisory [CVE-2026-64462] Fix resource leaks on probe failure
Fix resource leaks on probe failure. Red Hat rates this a security issue. Weakness: CWE-825.
High [CVE-2026-66041] Arbitrary code execution via crafted PGS/SUP subtitle file
FFmpeg 7.0 through 8.1.2, fixed in commit 4da9812, contains a heap out-of-bounds write vulnerability in the vf_quirc filter that allows an attacker to corrupt heap memory by supplying a crafted PGS/SUP subtitle file with mismatched frame dimensions. Attackers can provide a subtitle file whose second presentation has larger dimensions than its first, causing av_image_copy_plane() to copy data exceeding the initial allocation size into the undersized libquirc grayscale image buffer, resulting in heap corruption and process crash with potential for code execution. A flaw was found in FFmpeg's `vf_quirc` filter, which handles subtitle processing. This file, with mismatched frame dimensions, can cause the software to write data beyond the allocated memory buffer. Successful exploitation can lead to heap corruption, a process crash, and potentially arbitrary code execution, allowing the attacker to run malicious code on the affected system. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI). Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-66040] Arbitrary code execution via crafted PNG image
FFmpeg through 8.1.2, fixed in commit b506faf, contains a heap out-of-bounds write vulnerability in the native PNG and APNG encoders that allows remote attackers to corrupt heap memory by supplying a crafted PNG image with a malicious eXIf chunk. Attackers can craft an eXIf chunk where multiple IFD entries reference the same large value payload, causing canonical serialization to expand the output far beyond the undersized allocation estimated by add_exif_profile_size(), resulting in png_write_chunk() writing tens of thousands of bytes past the buffer boundary, leading to deterministic heap corruption, process crash, and potentially arbitrary code execution. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI). Red Hat does not currently list a fixing RHSA for this CVE.
High [CVE-2026-66039] Arbitrary code execution via crafted CAF file
FFmpeg through 8.1.2, fixed in commit aafb5c6, contains a signed integer overflow vulnerability in the MACE6 audio decoder that allows attackers to corrupt heap memory by supplying a crafted CAF file with a malicious bytes_per_packet value. Attackers can craft a CAF file with oversized bytes_per_packet and frames_per_packet values in the desc chunk to trigger an integer overflow in mace_decode_frame() during output sample count computation, resulting in an undersized buffer allocation and heap out-of-bounds write that could enable code execution. A flaw was found in FFmpeg. This vulnerability could allow an attacker to execute arbitrary code on the affected system. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux AI 3.3 for RHEL 9; Red Hat Enterprise Linux AI 3.4 for RHEL 9; Red Hat Enterprise Linux AI 3.5 for RHEL 9; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI). Red Hat fixing advisory: RHSA-2026:60336, RHSA-2026:60334, RHSA-2026:60335.
High [CVE-2026-66036] Arbitrary code execution via crafted video in vf_hqdn3d filter
FFmpeg through 8.1.2, fixed in commit 5d7112c, contains a heap out-of-bounds write vulnerability in the vf_hqdn3d filter that allows attackers to corrupt heap memory by supplying a crafted video whose frame resolution increases between frames when filtergraph reinitialization is disabled via the -reinit_filter 0 option. Attackers can provide a malicious video input where vf_hqdn3d.config_input() allocates undersized per-plane line-history buffers based on the initial frame width, and subsequent larger frames cause denoise_spatial() to write beyond the allocation boundary, resulting in heap memory corruption. A flaw was found in FFmpeg. A remote attacker can exploit a heap out-of-bounds write vulnerability within the `vf_hqdn3d` filter by providing a specially crafted video file. This can result in arbitrary code execution or a denial of service. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux AI 3.3 for RHEL 9; Red Hat Enterprise Linux AI 3.4 for RHEL 9; Red Hat Enterprise Linux AI 3.5 for RHEL 9; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI). Red Hat fixing advisory: RHSA-2026:60336, RHSA-2026:60334, RHSA-2026:60335.
High [CVE-2026-17107] Impersonation header injection in service-proxy grants cluster-admin on every managed cluster
A flaw was found in the cluster-proxy service-proxy component used in Red Hat Advanced Cluster Management for Kubernetes (RHACM) and multicluster-engine (MCE). The service-proxy appends impersonation group headers to proxied requests without first removing caller-supplied values, and the spoke ServiceAccount holds unrestricted impersonation permissions. An authenticated hub principal can inject an Impersonate-Group header to escalate to cluster-admin on every managed cluster. This is due to improper handling of impersonation group headers, enabling unauthorized administrative access. While the impact of successful exploitation is severe, the attack requires authenticated access to the ACM hub cluster, which is a management-plane component not typically exposed to untrusted networks. Exploitation also depends on knowledge of the cluster-proxy architecture and deliberate construction of requests targeting specific managed clusters. These prerequisites significantly reduce the likelihood of opportunistic or widespread exploitation. Red Hat severity: Important — CVSS 8.5 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H). Weakness: CWE-441. Red Hat fixing advisory: RHSA-2026:46885, RHSA-2026:47388, RHSA-2026:47974, RHSA-2026:48284, RHSA-2026:47949, RHSA-2026:47735, RHSA-2026:47953.
High [CVE-2026-66140] Privilege escalation via directory traversal due to mishandled queue-name arguments
Exim before 4.99.5 allows directory traversal to access files outside of the spool area, and consequently gain privileges, because arguments related to queue-name are mishandled. A flaw was found in Exim. This Important flaw in Exim allows a local, unprivileged attacker to achieve privilege escalation through directory traversal. By exploiting mishandled queue-name arguments, an attacker can access sensitive files outside the intended spool area, increasing the risk of system compromise. Red Hat severity: Important — CVSS 8.4 (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-22.
High [CVE-2026-66138] Arbitrary code execution via malicious configuration
In OpenStack Ironic Python Agent through 11.6.0, a project-scoped user with the manager role can achieve arbitrary code execution on a running Ironic-Python-Agent via a maliciously constructed configuration, because the value of ntp_server is passed to a shell. A vulnerability was found in Ironic-Python-Agent's (IPA) time syncing code. The value of the ntp_server configuration option is inserted into a shell command without sanitization. This command is run as root very early in the IPA startup flow, allowing an attacker to run arbitrary commands as root. This value can be set in three ways; directly in an operator-created ramdisk, set via kernel command line using Ironic, or passing the parameters via mDNS responder for mDNS enabled installation. For the most common, and highest security risk case, this means a Manager role associated with the project set as node.owner may be able to trigger this vulnerability. Red Hat OpenStack Platform ships ironic-python-agent as part of bare metal provisioning. Deployments using chrony for time synchronization in the IPA ramdisk are affected by this vulnerability. The impact is limited to the bare metal node running the IPA ramdisk; there is no known method for leveraging ramdisk shell access to compromise the Ironic control plane service.
High [CVE-2026-64255] validate sta_mask before ffs in BA session handlers
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers Three BA session handlers use ffs(ba_data->sta_mask) - 1 to derive a station ID without checking that sta_mask is non-zero. When sta_mask is zero, ffs() returns 0 and the subtraction wraps to 0xFFFFFFFF, causing an out-of-bounds access on fw_id_to_link_sta[]. Add WARN_ON_ONCE(!ba_data->sta_mask) guards before each ffs() call, consistent with the existing check in iwl_mld_ampdu_rx_start(). A flaw was found in the Linux kernel's iwlwifi (Intel Wireless WiFi) driver. This vulnerability allows an attacker to cause an out-of-bounds memory access in the WiFi Block Acknowledgement (BA) session handlers. This occurs when the `sta_mask` value is zero, leading to an incorrect station ID calculation and potential system instability or denial of service. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-823. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel-rt.
High [CVE-2026-64218] fix report_work leak on backbone_gw purge
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: fix report_work leak on backbone_gw purge batadv_bla_purge_backbone_gw() removes stale backbone gateway entries, but fails to properly handle their associated report_work: - If report_work is running, the purge must wait for it to finish before freeing the backbone_gw, otherwise the worker may access freed memory (e.g. bat_priv). - If report_work is pending, the purge must cancel it and release the reference held for that pending work item. The previous implementation called hlist_for_each_entry_safe() inside a spin_lock_bh() section, but cancel_work_sync() may sleep and therefore cannot be called from within a spinlock-protected region. Restructure the loop to handle one entry per spinlock critical section: acquire the lock, find the next entry to purge, remove it from the hash list, then release the lock before calling cancel_work_sync() and dropping the hash_entry reference. Repeat until no more entries require purging. Red Hat severity: Important. Weakness: CWE-825. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux for NVIDIA 26; Red Hat OpenShift Container Platform 4. Affected products named by the advisory: Red Hat package: libkrun; Red Hat package: kernel.
High [CVE-2026-64226] Linux kernel (sched_ext): Use-After-Free vulnerability in scx_root_enable_workfn
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path In scx_root_enable_workfn(), put_task_struct(p) is called before scx_error() dereferences p->comm and p->pid. If the iterator's reference is the last drop, the task is freed synchronously and the deref becomes a UAF. Move put_task_struct() past scx_error(). This Use-After-Free (UAF) vulnerability occurs in the `scx_root_enable_workfn()` function. A local attacker could exploit this to potentially achieve arbitrary code execution or privilege escalation. Red Hat severity: Important — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-825. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
High [CVE-2026-64219] Validate payload length and link_index in dc_process_dmub_aux_transfer_async
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async [Why&How] dc_process_dmub_aux_transfer_async() copies payload->length bytes into a 16-byte stack buffer (dpaux.data[16]) guarded only by an ASSERT(), which is a no-op in release builds. If a caller ever passes length > 16 this results in a stack buffer overflow via memcpy. Additionally, link_index is used to dereference dc->links[] without bounds checking against dc->link_count, risking an out-of-bounds access. Replace the ASSERT with a hard runtime check that returns false when payload->length exceeds the destination buffer size, and add a bounds check for link_index before it is used. (cherry picked from commit ba4caa9fecdf7a38f98c878ad05a8a64148b6881) Red Hat severity: Important — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-120. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2026:57251, RHSA-2026:55765, RHSA-2026:55764, RHSA-2026:57252. Affected products named by the advisory: Red Hat package: kernel-rt.
High [CVE-2026-64247] Denial of Service due to out-of-bounds read
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: hyper-v: Bound the bank index when querying sparse banks When checking if a VP ID is included in a sparse bank set, explicitly check that the ID can actually be contained in a sparse bank (the TLFS allows for a maximum of 64 banks of 64 vCPUs each). When handling a paravirtual TLB flush for L2, the VP ID is copied verbatim from the enlightened VMCS, without any bounds check, i.e. isn't guaranteed to be under the limit of 4096. Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat package: kernel-rt.
High [CVE-2026-64217] Linux kernel netfs: Memory corruption leading to denial of service and potential privilege escalation
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix overrun check in netfs_extract_user_iter() Fix netfs_extract_user_iter() so that if iov_iter_extract_pages() overfills pages[], then those pages don't get included in the iterator constructed at the end of the function. If there was an overfill, memory corruption has already happened. A local user can exploit this vulnerability by performing specific file I/O operations on a netfs-backed mount, leading to an overrun in the `netfs_extract_user_iter()` function. This memory corruption can cause a kernel crash, resulting in a Denial of Service (DoS). In some cases, it may also lead to privilege escalation by allowing unauthorized access to sensitive kernel memory. Red Hat severity: Important — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-787. Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel.
High [CVE-2026-64251] Linux kernel: Use-after-free in pwrseq_debugfs_seq_next can lead to denial of service
In the Linux kernel, the following vulnerability has been resolved: pwrseq: core: fix use-after-free in pwrseq_debugfs_seq_next() pwrseq_debugfs_seq_next() declares 'next' with __free(put_device), which causes put_device() to be called on the returned pointer when the variable goes out of scope. This results in a use-after-free since the seq_file framework receives a pointer whose reference has already been dropped. Simply removing __free(put_device) would fix the UAF but would leak the reference acquired by bus_find_next_device(), as stop() only calls up_read(&pwrseq_sem) and never releases the device reference. Fix this by making the reference counting consistent across all seq_file callbacks, matching the standard pattern used by PCI and SCSI: - start(): use get_device() so it returns a referenced pointer. - next(): explicitly put_device(curr) to release the previous device's reference (no NULL check needed - the seq_file framework only calls next() while the previous return was non-NULL). - stop(): put_device(data) to release the last iterated device's reference, with a NULL guard since stop() may be called with NULL when start() returned NULL or next() reached end-of-sequence. A local attacker with access to the debugfs interface could exploit a use-after-free vulnerability in the `pwrseq_debugfs_seq_next()` function.
High [CVE-2026-64221] Linux kernel: spi: ti-qspi use-after-free allows privilege escalation or denial of service
In the Linux kernel, the following vulnerability has been resolved: spi: ti-qspi: fix use-after-free after DMA setup failure The driver falls back to PIO mode if DMA setup fails during probe. Make sure to clear the DMA channel pointer also if buffer allocation fails to avoid passing a pointer to the released channel to the DMA engine (or trying to free the channel a second time on late probe errors or driver unbind). This issue was flagged by Sashiko when reviewing a devres allocation conversion patch. If the DMA channel pointer is not properly cleared after a buffer allocation failure, it can lead to the use of a freed memory region. This could allow a local attacker to cause a denial of service or potentially escalate privileges. Red Hat severity: Important — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-825. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
High [CVE-2026-64208] crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks
In the Linux kernel, the following vulnerability has been resolved: crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks Change the krb5 crypto library to provide facilities to precheck the length of the message about to be decrypted or verified. Fix AF_RXRPC to make use of this to validate DATA packets secured with RxGK. This vulnerability arises from a lack of proper length checks before decrypting or verifying incoming messages. A remote attacker could exploit this by sending specially crafted messages, leading to a Denial of Service (DoS) condition where the system becomes unavailable. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-120. Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE. Affected products named by the advisory: Red Hat package: kernel.
High [CVE-2026-64216] netfs Use-After-Free vulnerability allows local denial of service and memory corruption
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential UAF in netfs_unlock_abandoned_read_pages() netfs_unlock_abandoned_read_pages(rreq) accesses the index of the folios it is wanting to unlock and compares that to rreq->no_unlock_folio so that it doesn't unlock a folio being read for netfs_perform_write() or netfs_write_begin(). However, given that netfs_unlock_abandoned_read_pages() is called _after_ NETFS_RREQ_IN_PROGRESS is cleared, the one folio that it's not allowed to dereference is the one specified by ->no_unlock_folio as ownership immediately reverts to the caller. Fix this by storing the folio pointer instead and using that rather than the index. Also fix netfs_unlock_read_folio() where the same applies. A local user, by interacting with a mounted `netfs` filesystem, could trigger a Use-After-Free (UAF) vulnerability. This flaw occurs when the system attempts to unlock abandoned read pages, potentially leading to a kernel crash and a denial of service. In some cases, this could also result in memory corruption, allowing for information disclosure or data manipulation. Red Hat severity: Moderate — CVSS 7 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-825. Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE.