Red Hat Linux Security Advisories & CVEs
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Latest Linux advisories
Medium [CVE-2026-53310] Fix cross-fabric target timeout lookup
In the Linux kernel, the following vulnerability has been resolved: soc/tegra: cbb: Fix cross-fabric target timeout lookup When a fabric receives an error interrupt, the error may have occurred on a different fabric. The target timeout lookup was using the wrong base address (cbb->regs) with offsets from a different fabric's target map, causing a kernel page fault. Unable to handle kernel paging request at virtual address ffff80000954cc00 pc: tegra234_cbb_get_tmo_slv+0xc/0x28 Call trace: tegra234_cbb_get_tmo_slv+0xc/0x28 print_err_notifier+0x6c0/0x7d0 tegra234_cbb_isr+0xe4/0x1b4 Add tegra234_cbb_get_fabric() to look up the correct fabric device using fab_id, and use its base address for accessing target timeout registers. This vulnerability occurs in the `soc/tegra: cbb` component when a fabric receives an error interrupt, causing the system to use an incorrect memory address during a target timeout lookup. This can lead to a kernel page fault, potentially resulting in a denial of service (DoS) for the affected system. Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-823. Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-53280] Fix NULL group->domain dereference in pci_dev_reset_iommu_done
In the Linux kernel, the following vulnerability has been resolved: iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done() Local sashiko review pointed it out that group->domain could be NULL when a default domain fails to allocate during the first probe, which can crash at domain->ops->attach_dev dereference in __iommu_attach_device() invoked by pci_dev_reset_iommu_done(). pci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL. Skip the re-attach in pci_dev_reset_iommu_done() to fix the bug. A flaw was found in the Linux kernel's Input-Output Memory Management Unit (IOMMU) component. This can cause a system crash, resulting in a Denial of Service (DoS). Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-476. Affected Red Hat products: Red Hat Enterprise Linux 10. Red Hat does not currently list a fixing RHSA for this CVE.
Medium [CVE-2026-53279] fix hang on init failure
In the Linux kernel, the following vulnerability has been resolved: drm/gma500/oaktrail_lvds: fix hang on init failure The LVDS init code looks up an I2C adapter using i2c_get_adapter() and tries to read the EDID before falling back to allocating and registering its own adapter. The error handling does not separate these cases so on a late init failure it will try to deregister and free also an adapter that had previously been registered. Since i2c_get_adapter() takes another reference to the adapter, deregistration hangs indefinitely while waiting for the reference to be released. Fix this by only destroying adapters allocated during LVDS init on errors. This issue occurs during the initialization of the Low-Voltage Differential Signaling (LVDS) display interface. Due to improper error handling, the system may attempt to deregister an I2C adapter that is still in use, causing the system to hang indefinitely. This can lead to a Denial of Service (DoS), making the system unresponsive. Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-833. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8. Red Hat does not currently list a fixing RHSA for this CVE.
Low [CVE-2026-48935] Unauthorized file metadata modification
Unauthorized file metadata modification. Red Hat rates this low (CVSS 3.3). Weakness: CWE-279. Red Hat lists fixing advisory RHSA-2026:35272 with package nodejs20-main-20.20.2-1.hum1, nodejs:24-9080020260626074955.rhel9, nodejs:22-9080020260626075442.rhel9, nodejs25-main-25.9.0-1.1.hum1. Affected product named by the advisory: Red Hat Enterprise Linux 1.
Low [CVE-2026-48936] Local server can be started without network permission via Permission API flaw
Local server can be started without network permission via Permission API flaw. Red Hat rates this low (CVSS 3.3). Weakness: CWE-648. Red Hat lists fixing advisory RHSA-2026:35272 with package nodejs20-main-20.20.2-1.hum1, nodejs25-main-25.9.0-1.1.hum1, nodejs26-main-26.4.0-1.3.hum1, nodejs22-main-22.23.1-2.hum1.
Unknown [CVE-2026-53299] Move ndesc initialization at end of airoha_qdma_init_tx
In the Linux kernel, the following vulnerability has been resolved: net: airoha: Move ndesc initialization at end of airoha_qdma_init_tx() If queue entry list allocation fails in airoha_qdma_init_tx_queue routine, airoha_qdma_cleanup_tx_queue() will trigger a NULL pointer dereference accessing the queue entry array. A flaw was found in the Linux kernel, specifically within the airoha network driver. This vulnerability arises from an issue where a variable (ndesc) is initialized too early in the airoha_qdma_init_tx_queue routine. This results in a Denial of Service (DoS), making the system unavailable. Red Hat severity: not rated. Weakness: CWE-824. 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.
Unknown [CVE-2026-53301] Fix null reset ops
In the Linux kernel, the following vulnerability has been resolved: reset: amlogic: t7: Fix null reset ops Fix missing reset ops causing kernel null pointer dereference. This SOC's reset is currently not used yet. Missing reset operations can lead to a null pointer dereference, which may cause system instability or a denial of service (DoS). This vulnerability occurs when the system attempts to use uninitialized reset operations, resulting in an unexpected system state. Red Hat severity: not rated. Weakness: CWE-824. 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.
Unknown [CVE-2026-53288] Reserve an extra page for early kernel mapping
In the Linux kernel, the following vulnerability has been resolved: arm64: Reserve an extra page for early kernel mapping The final part of [data, end) segment may overflow into the next page of init_pg_end[1] which is the gap page before early_init_stack[2]: [1] crash_arm64_v9.0.1> vtop ffffffed00601000 VIRTUAL PHYSICAL ffffffed00601000 83401000 PAGE DIRECTORY: ffffffecffd62000 PGD: ffffffecffd62da0 => 10000000833fb003 PMD: ffffff80033fb018 => 10000000833fe003 PTE: ffffff80033fe008 => 68000083401f03 PAGE: 83401000 PTE PHYSICAL FLAGS 68000083401f03 83401000 (VALID|SHARED|AF|NG|PXN|UXN) PAGE PHYSICAL MAPPING INDEX CNT FLAGS fffffffec00d0040 83401000 0 0 1 4000 reserved [2] ffffffed002c8000 (r) __pi__data ffffffed0054e000 (d) __pi___bss_start ffffffed005f5000 (b) __pi_init_pg_dir ffffffed005fe000 (b) __pi_init_pg_end ffffffed005ff000 (B) early_init_stack ffffffed00608000 (b) __pi__end For 4K pages, the early kernel mapping may use 2MB block entries but the kernel segments are only 64KB aligned. Segment boundaries that fall within a 2MB block therefore require a PTE table so that different attributes can be applied on either side of the boundary. KERNEL_SEGMENT_COUNT still correctly counts the five permanent kernel VMAs registered by declare_kernel_vmas().
Unknown [CVE-2026-53312] Remove overflows on the invalidation path
In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Remove overflows on the invalidation path Since RISC-V supports a sign extended page table it should support a gather->end of ULONG_MAX, but if this happens it will infinite loop because of the overflow. Also avoid overflow computing the length by moving the +1 to the other side of the < A flaw was found in the Linux kernel's IOMMU (Input/Output Memory Management Unit) component for RISC-V architectures. This vulnerability could allow a local attacker to cause a Denial of Service (DoS) by triggering the overflow condition. Red Hat severity: not rated. Weakness: CWE-190. 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.
Unknown [CVE-2026-53298] Move ndesc initialization at end of airoha_qdma_init_rx_queue
In the Linux kernel, the following vulnerability has been resolved: net: airoha: Move ndesc initialization at end of airoha_qdma_init_rx_queue() If queue entry or DMA descriptor list allocation fails in airoha_qdma_init_rx_queue routine, airoha_qdma_cleanup() will trigger a NULL pointer dereference running netif_napi_del() for RX queue NAPIs since netif_napi_add() has never been executed to this particular RX NAPI. The issue is due to the early ndesc initialization in airoha_qdma_init_rx_queue() since airoha_qdma_cleanup() relies on ndesc value to check if the queue is properly initialized. Move page_pool allocation after descriptor list allocation in order to avoid memory leaks if desc allocation fails. A flaw was found in the Linux kernel's airoha network driver. An issue with early initialization of the ndesc variable in the airoha_qdma_init_rx_queue() routine can lead to a NULL pointer dereference during cleanup. This can result in a Denial of Service (DoS) condition. Additionally, improper ordering of page pool allocation could lead to memory leaks. Red Hat severity: not rated. Weakness: CWE-476. 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.
Unknown [CVE-2026-53302] eip93 - fix hmac setkey algo selection
In the Linux kernel, the following vulnerability has been resolved: crypto: eip93 - fix hmac setkey algo selection eip93_hmac_setkey() allocates a temporary ahash transform for computing HMAC ipad/opad key material. The allocation uses the driver-specific cra_driver_name (e.g. "sha256-eip93") but passes CRYPTO_ALG_ASYNC as the mask, which excludes async algorithms. Since the EIP93 hash algorithms are the only ones registered under those driver names and they are inherently async, the lookup is self-contradictory and always fails with -ENOENT. When called from the AEAD setkey path, this failure leaves the SA record partially initialized with zeroed digest fields.
Unknown [CVE-2026-53308] Free allocated workqueue and fix removal order
In the Linux kernel, the following vulnerability has been resolved: power: supply: max77705: Free allocated workqueue and fix removal order Use devm interface for allocating workqueue to fix two bugs at the same time: 1. Driver leaks the memory on remove(), because the workqueue is not destroyed. 2. Driver allocates workqueue and then registers interrupt handlers with devm interface. The interrupt handler schedules work on this exact workqueue, thus if interrupt is hit in this short time window - after destroying workqueue, but before devm() frees the interrupt - the schedulled work will lead to use of freed memory. Change is not equivalent in the workqueue itself: use non-legacy API which does not set (__WQ_LEGACY | WQ_MEM_RECLAIM). The workqueue is used to update power supply (power_supply_changed()) status, thus there is no point to run it for memory reclaim. Note that dev_name() is not directly used in second argument to prevent possible unlikely parsing any "%" character in device name as format. Incorrect management of workqueues and interrupt handlers during device removal can lead to a use-after-free vulnerability. This allows for the potential use of freed memory, which could result in system instability or, in certain scenarios, arbitrary code execution. Red Hat severity: not rated. Weakness: CWE-364.
Unknown [CVE-2026-53300] fix NTMP DMA use-after-free issue
In the Linux kernel, the following vulnerability has been resolved: net: enetc: fix NTMP DMA use-after-free issue The AI-generated review reported a potential DMA use-after-free issue [1]. If netc_xmit_ntmp_cmd() times out and returns an error, the pending command is not explicitly aborted, while ntmp_free_data_mem() unconditionally frees the DMA buffer. If the buffer has already been reallocated elsewhere, this may lead to silent memory corruption. Because the hardware eventually processes the pending command and perform a DMA write of the response to the physical address of the freed buffer. To resolve this issue, this patch does the following modifications: 1. Convert cbdr->ring_lock from a spinlock to a mutex The lock was originally a spinlock in case NTMP operations might be invoked from atomic context. After downstream support for all NTMP tables, no such usage has materialized. A mutex lock is now required because the driver now needs to reclaim used BDs and release associated DMA memory within the lock's context, while dma_free_coherent() might sleep. 2. Introduce software command BD (struct netc_swcbd) The hardware write-back overwrites the addr and len fields of the BD, so the driver cannot rely on the hardware BD to free the associated DMA memory. The driver now maintains a software shadow BD storing the DMA buffer pointer, DMA address, and size.
Unknown [CVE-2026-53320] reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty
In the Linux kernel, the following vulnerability has been resolved: nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty() nilfs_ioctl_mark_blocks_dirty() uses bd_oblocknr to detect dead blocks by comparing it with the current block number bd_blocknr. If they differ, the block is considered dead and skipped. However, bd_oblocknr should never be 0 since block 0 typically stores the primary superblock and is never a valid GC target block. A corrupted ioctl request with bd_oblocknr set to 0 causes the comparison to incorrectly match when the lookup returns -ENOENT and sets bd_blocknr to 0, bypassing the dead block check and calling nilfs_bmap_mark() on a non-existent block. This causes nilfs_btree_do_lookup() to return -ENOENT, triggering the WARN_ON(ret == -ENOENT). Fix this by rejecting ioctl requests with bd_oblocknr set to 0 at the beginning of each iteration. [ryusuke: slightly modified the commit message and comments for accuracy] A local attacker could exploit this vulnerability by sending a specially crafted input/output control (ioctl) request to the `nilfs_ioctl_mark_blocks_dirty()` function. By providing a zero block number, the attacker can bypass a critical dead block check, causing the system to attempt operations on a non-existent block. This ultimately leads to a system crash, resulting in a Denial of Service (DoS). Red Hat severity: not rated.
Unknown [CVE-2026-53307] Fully validate 'pinmux' property
In the Linux kernel, the following vulnerability has been resolved: pinctrl: pinconf-generic: Fully validate 'pinmux' property The pinconf_generic_parse_dt_pinmux() assumes that the 'pinmux' property is not empty when present. This might be not true. With that, the allocator will give a special value in return and not NULL which lead to the crash when trying to access that (invalid) memory. Fix that by fully validating 'pinmux' value, including its length. An attacker could provide an empty 'pinmux' property, which would cause the system to crash due to invalid memory access. This could lead to a denial of service. Red Hat severity: not rated. Weakness: CWE-824. 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.
Unknown [CVE-2026-53303] protect extension_list reading with sb_lock in f2fs_sbi_show
In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the extension_list, extension_count and hot_ext_count are read without holding sbi->sb_lock. If a concurrent sysfs store modifies the extension list via f2fs_update_extension_list(), the show path may read inconsistent count and array contents, potentially leading to out-of-bounds access or displaying stale data. Fix this by holding sb_lock around the entire extension list read and format operation. It occurs because the `extension_list` and related counts are read without proper synchronization, enabling a concurrent system file system (sysfs) store operation to modify the list while it is being accessed. This inconsistency can lead to system instability or incorrect information being presented. Red Hat severity: not rated. Weakness: CWE-366. 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.
Unknown [CVE-2026-53319] remove WARN_ON_ONCE from wbt_init_enable_default
In the Linux kernel, the following vulnerability has been resolved: blk-wbt: remove WARN_ON_ONCE from wbt_init_enable_default() wbt_init_enable_default() uses WARN_ON_ONCE to check for failures from wbt_alloc() and wbt_init(). However, both are expected failure paths: - wbt_alloc() can return NULL under memory pressure (-ENOMEM) - wbt_init() can fail with -EBUSY if wbt is already registered syzbot triggers this by injecting memory allocation failures during MTD partition creation via ioctl(BLKPG), causing a spurious warning. wbt_init_enable_default() is a best-effort initialization called from blk_register_queue() with a void return type. Failure simply means the disk operates without writeback throttling, which is harmless. Replace WARN_ON_ONCE with plain if-checks, consistent with how wbt_set_lat() in the same file already handles these failures. Add a pr_warn() for the wbt_init() failure to retain diagnostic information without triggering a full stack trace. A flaw was found in the Linux kernel's block writeback throttling (blk-wbt) component. The `wbt_init_enable_default()` function used a warning mechanism (WARN_ON_ONCE) for expected failure paths during memory allocation or if writeback throttling was already registered. Red Hat severity: not rated. Weakness: CWE-544.
Critical [CVE-2026-13283] Use after free in AdFilter
Use after free in AdFilter. Red Hat rates this important (CVSS 9.6). Weakness: CWE-825.
High [CVE-2026-40941] Package Import Signature Validation Bypass Allows Self-Signed Packages
Package Import Signature Validation Bypass Allows Self-Signed Packages. Red Hat rates this important (CVSS 8.8). Weakness: CWE-347.
High [CVE-2026-13281] Integer overflow in Mojo
Integer overflow in Mojo. Red Hat rates this important (CVSS 8.7). Weakness: CWE-190.