Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability

Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

Windows Hyper-V Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

Windows Win32k Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.

drm/amdgpu: serialize vblank counter reads against GPU reset

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: serialize vblank counter reads against GPU reset The vblank counter callback reads display registers and scanout position without holding reset_domain->sem. During GPU recovery, display commit work can call the callback while reset owns the semaphore for writing. The hardware access then triggers the lockdep_assert_held() in amdgpu_device_skip_hw_access() and sets TAINT_WARN when lockdep is enabled. Try to acquire the reset semaphore for reading before accessing the hardware, and hold it across the counter and scanout-position reads. If reset is already in progress, return DRM's cached software vblank count instead. This avoids blocking behind reset and avoids accessing display hardware while it is being reset. The cached count is less accurate than the hardware count, but is used only when reset prevents a safe hardware read. This addresses the reset-time warning from this vblank path; it does not suppress or fix unrelated lockdep warnings. (cherry picked from commit 51a4359f7431a4be5e42803c8bdaf7e0e5be2934)

Gotenberg: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Gotenberg is a Docker-powered stateless API for PDF files. From 8.10.0 until 8.33.0, the newContext function in pkg/modules/api/context.go starts one errgroup.Go goroutine for each multipart downloadFrom entry and allows those goroutines to concurrently write to the shared ctx.files, ctx.diskToOriginal, and ctx.filesByField maps and slices. Go maps and slices are not safe for concurrent mutation, so a crafted multipart request containing many downloadFrom entries can trigger a data race and terminate the process with a fatal concurrent map writes runtime error. The default configuration enables downloadFrom and disables authentication, allowing an unauthenticated remote attacker to crash an exposed conversion service and cause a denial of service. This issue is fixed in version 8.33.0.

KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer

In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Use READ_ONCE() when reading entries/indices from PSC buffer Use READ_ONCE() when reading entries/indices from the guest-accessible Page State Change buffer to defend against TOCTOU bugs. Don't bother with READ_ONCE()/WRITE_ONCE() for cases where KVM is writing (and not consuming the result!), as the guest isn't supposed to touch the buffer while it's being processed. I.e. using READ_ONCE() is all about protecting against misbehaving guests.

Vulnerabilities in IBM AIX and PowerVM VIOS

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to cause a denial of service and compromise data integrity due to a time-of-check time-of-use race condition.

mailbox: imx: Add a channel shutdown field

In the Linux kernel, the following vulnerability has been resolved: mailbox: imx: Add a channel shutdown field sashiko complained about possible teardown problem. The scenario CPU 0 CPU 1 imx_mu_isr() imx_mu_shutdown() imx_mu_xcr_rmw(priv, IMX_MU_RCR, 0, IMX_MU_xCR_RIEn(priv->dcfg->type, cp->idx)); imx_mu_specific_rx() imx_mu_xcr_rmw(priv, IMX_MU_RCR, IMX_MU_xCR_RIEn(priv->dcfg->type, 0), 0); free_irq() The RX event remains enabled because in this short window the RX event was disabled in ->shutdown() while the interrupt was active and then enabled again by the ISR while ->shutdown waited in free_irq(). This race requires timing and if happens can be problematic on shared handlers if the "removed" channel triggers an interrupt. In this case the irq-core will shutdown the interrupt with the "nobody cared" message. Introduce imx_mu_con_priv::shutdown to signal that the channel is shutting down. This flag is set with the lock held (by imx_mu_xcr_clr_shut()). The unmask side uses imx_mu_xcr_set_act() which only enables the event if the channel has not been shutdown and serialises on the same lock.

Wheels 3.0.0 through 4.1.1 can disclose detailed exceptions when allowIPBasedDebugAccess=true (disabled by default). An allowed administrator request changes error/debug-display settings in shared application scope. If it overlaps with an unauthorized client's request that raises an error, that client can receive full exception details, including tag context or a serialized exception, and any sensitive data they contain. This race does not bypass the production gate protecting developer tools. This is fixed in 4.1.2.

AliasVault: Server-Side Request Forgery via DNS rebinding in Favicon Extraction

AliasVault is a privacy-first password manager with built-in email aliasing. Prior to 0.30.3, the AliasVault server API favicon extractor validates a user-supplied hostname with a first DNS lookup but allows the HTTP client to perform a second DNS lookup when connecting. An authenticated low-privileged user operating an attacker-controlled authoritative DNS server can return a public address during validation and a private address during connection, causing a publicly reachable self-hosted server to issue HTTP or HTTPS requests to internal hosts. A valid image response is returned in Base64 form, while other responses can expose limited timing and error information for internal-network reconnaissance. Exploitation requires a publicly reachable self-hosted instance with public registration enabled, an authenticated AliasVault account, an attacker-controlled authoritative DNS server, and a resolver that permits rebinding; default checks limit requests to ports 80 and 443. The browser extensions, web application, and mobile applications are not affected. This issue is fixed in version 0.30.3.

Clipboard User Service Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Clipboard User Service allows an authorized attacker to elevate privileges locally.

Windows Storage Elevation of Privilege Vulnerability

Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.

Windows DHCP Server Remote Code Execution Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DHCP Server allows an unauthorized attacker to execute code over a network.

Windows Storage Elevation of Privilege Vulnerability

Use after free in Windows Storage allows an authorized attacker to elevate privileges locally.

drm/gem: fix race between change_handle and handle_delete

In the Linux kernel, the following vulnerability has been resolved: drm/gem: fix race between change_handle and handle_delete drm_gem_change_handle_ioctl leaves the old handle live in the IDR during the window between spin_unlock(table_lock) and the final spin_lock(table_lock). A concurrent drm_gem_handle_delete on the old handle succeeds in this window, decrements handle_count to 0, and frees the GEM object while the new handle's IDR entry still references it. NULL the old handle's IDR entry before dropping table_lock so that any concurrent GEM_CLOSE on the old handle sees NULL and returns -EINVAL. Restore the old entry on the prime-bookkeeping error path.

drm/amdgpu: fix amdgpu_hmm_range_get_pages

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix amdgpu_hmm_range_get_pages The notifier sequence must only be read once or otherwise we could work with invalid pages. While at it also fix the coding style, e.g. drop the pre-initialized return value and use the common define for 2G range. (cherry picked from commit c08972f555945cda57b0adb72272a37910153390)

WordPress Photo Reviews for WooCommerce plugin <= 1.2.31 - Race Condition vulnerability

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in VillaTheme Photo Reviews for WooCommerce woo-photo-reviews allows Leveraging Race Conditions.This issue affects Photo Reviews for WooCommerce: from n/a through 1.2.31.

Cross-session AES key confusion in the Espressif ESP32 hardware crypto driver

The Espressif AES driver drivers/crypto/crypto_esp32_aes.c advertises a multi-session cipher API — it hands out up to CONFIG_ESP32_CRYPTO_AES_SESSIONS_MAX (default 4) independent sessions, each carrying its own key and direction. The AES peripheral, however, has a single chip-global set of key and mode registers, and aes_begin_session() programmed them exactly once, at session start, outside the aes_lock mutex that serialises the transforms. The per-operation handlers aes_ecb_op(), aes_cbc_op() and aes_ctr_op() then ran aes_hal_transform_block() against whatever key and direction the registers happened to hold. As a result, once a second session is opened with a different key, every subsequent operation on the first session silently uses the second session's key and direction, and no error is reported. Because the key programming happened outside the lock, the correct usage pattern of "each thread does begin, then op, then free on its own session" also races: a second thread's cipher_begin_session() landing between the first thread's begin and its operation makes that operation run under the second thread's key. An attacker who can induce session creation on the device — for example a protocol peer whose connection causes a session key to be installed — can influence which key is resident when a victim operation runs. The impact is a cryptographic failure rather than memory corruption: data the application believed it was protecting under one key is encrypted or decrypted under another. Where the resident key is one the attacker knows or supplied, the affected plaintext becomes recoverable by that attacker, and the operation's direction (encrypt versus decrypt) can likewise be inverted. Exposure requires an application that holds two or more concurrent sessions with different keys against this driver; no in-tree Zephyr subsystem does so today (the 802.15.4 security layer, which does open two sessions, uses CCM mode, which this driver rejects), so the risk falls on application code that uses the documented multi-session API. The fix removes all hardware access from aes_begin_session() and reprograms the key and direction at the top of every operation, inside aes_lock, so the chip-global registers can no longer be observed stale by another session.

WordPress Easy Digital Downloads plugin <= 3.7.1 - Race Condition vulnerability

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Awesomemotive Easy Digital Downloads easy-digital-downloads allows Leveraging Race Conditions.This issue affects Easy Digital Downloads: from n/a through 3.7.1.

libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line

libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table. Attackers can provide a crafted TrueType font whose NaN glyph coordinates bypass clip_points(), causing an out-of-bounds raster read in draw_line() during sft_render() and crashing the process.