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Sicherheitslücken in linux-azure · Seite 183

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für linux-azure: 1037. Davon im KEV-Katalog: 0.

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  1. CVE-2026-74335

    Nicht bewertetEPSS 0,21%Korrektur verfügbar

    bpf: Fix NULL pointer dereference in bpf_task_from_vpid()

    In the Linux kernel, the following vulnerability has been resolved: bpf: Fix NULL pointer dereference in bpf_task_from_vpid() bpf_task_from_vpid() looks up a task in the pid namespace of the current task, via find_task_by_vpid(): find_task_by_vpid(vpid) find_task_by_pid_ns(vpid, task_active_pid_ns(current)) find_pid_ns(nr, ns) -> idr_find(&ns->idr, nr) cgroup_skb programs run in softirq, which may interrupt a task that is itself in do_exit(). Once that task has passed exit_notify() -> release_task() -> __unhash_process(), its thread_pid is cleared, so task_active_pid_ns(current) returns NULL and find_pid_ns() dereferences &NUL

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  2. CVE-2026-74334

    Hoch · CVSS 7.8EPSS 0,13%Korrektur verfügbar

    RDMA/nldev: Fix locking when accessing mr->pd

    In the Linux kernel, the following vulnerability has been resolved: RDMA/nldev: Fix locking when accessing mr->pd Sashiko points out that, due to rereg_mr, the PD is actually variable and all the touches in nldev are racy. Use mr->device instead of mr->pd->device. Getting the PD restrack ID is more tricky. To avoid disturbing all the happy paths, add an rdma_restrack_sync() operation which is sort of like flush_workqueue() or synchronize_irq(): after it returns, all the old nldev touches to the mr are gone and everything sees the new PD. This makes it safe to reach into the PD pointer.

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  3. CVE-2026-74333

    Hoch · CVSS 8.4EPSS 0,19%Korrektur verfügbar

    ASoC: amd: acp-sdw-legacy: Bound DAI link iteration

    In the Linux kernel, the following vulnerability has been resolved: ASoC: amd: acp-sdw-legacy: Bound DAI link iteration create_sdw_dailinks() walks soc_dais until it finds an entry with initialised cleared, but soc_dais is allocated with exactly num_ends entries. If all entries are initialised, the loop reads past the end of the array. This was reported by KASAN: BUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach] Read of size 1 Pass the allocated entry count to create_sdw_dailinks() and stop before reading past the array.

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  4. CVE-2026-74332

    Hoch · CVSS 8.4EPSS 0,2%Korrektur verfügbar

    ASoC: amd: acp-sdw-sof: Bound DAI link iteration

    In the Linux kernel, the following vulnerability has been resolved: ASoC: amd: acp-sdw-sof: Bound DAI link iteration create_sdw_dailinks() walks sof_dais until it finds an entry with initialised cleared, but sof_dais is allocated with exactly num_ends entries. If all entries are initialised, the loop reads past the end of the array. Pass the allocated entry count to create_sdw_dailinks() and stop before reading past the array.

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  5. CVE-2026-74331

    Nicht bewertetEPSS 0,24%Korrektur verfügbar

    firmware_loader: Fix recursive lock in device_cache_fw_images()

    In the Linux kernel, the following vulnerability has been resolved: firmware_loader: Fix recursive lock in device_cache_fw_images() A recursive locking deadlock can occur in the firmware loader's power management notification handler. During system suspend or hibernation preparation, fw_pm_notify() calls device_cache_fw_images(). This function acquires fw_lock to set the firmware cache state to FW_LOADER_START_CACHE and then iterates over all devices using dpm_for_each_dev() while still holding the lock. For each device, dev_cache_fw_image() schedules asynchronous work to cache the firmware. If memory allocation for the async work entry f

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  6. CVE-2026-74330

    Hoch · CVSS 7.8EPSS 0,13%Korrektur verfügbar

    configfs: fix lockless traversals of ->s_children

    In the Linux kernel, the following vulnerability has been resolved: configfs: fix lockless traversals of ->s_children Having the parent directory locked protects entries from removal by another thread, but it does *not* protect cursors from being moved around by lseek() - or freed, for that matter.

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  7. CVE-2026-74329

    Nicht bewertetEPSS 0,21%Korrektur verfügbar

    watchdog: unregister PM notifier on watchdog unregister

    In the Linux kernel, the following vulnerability has been resolved: watchdog: unregister PM notifier on watchdog unregister watchdog_register_device() registers wdd->pm_nb when WDOG_NO_PING_ON_SUSPEND is set, but watchdog_unregister_device() does not remove it. This leaves an embedded notifier block on the PM notifier chain after the watchdog device has been unregistered. A later suspend/resume notification can then call watchdog_pm_notifier() with a stale watchdog_device pointer, or at minimum after wdd->wd_data has been cleared by watchdog_dev_unregister(). Unregister the PM notifier before tearing down the watchdog device.

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  8. CVE-2026-74328

    Hoch · CVSS 8.8EPSS 0,17%Korrektur verfügbar

    iommufd: Destroy the pages content after detaching from dmabuf

    In the Linux kernel, the following vulnerability has been resolved: iommufd: Destroy the pages content after detaching from dmabuf Sashiko points out this has gotten out of order, the mutex could still be in use through the dmabuf invalidation callbacks. Don't destroy any of the pages content until the dmabuf is fully detached.

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  9. CVE-2026-74327

    Nicht bewertetEPSS 0,21%Korrektur verfügbar

    vmalloc: fix NULL pointer dereference in is_vm_area_hugepages()

    In the Linux kernel, the following vulnerability has been resolved: vmalloc: fix NULL pointer dereference in is_vm_area_hugepages() find_vm_area() can return NULL if the given address is not a valid vmalloc area. Check the return value before dereferencing it to avoid a kernel crash.

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  10. CVE-2026-74325

    Hoch · CVSS 7.8EPSS 0,17%Korrektur verfügbar

    wifi: mt76: use kfree_rcu for offchannel link in mt76_put_vif_phy_link

    In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: use kfree_rcu for offchannel link in mt76_put_vif_phy_link mt76_put_vif_phy_link() frees the offchannel mlink with plain kfree() after rcu_assign_pointer(NULL). However, rcu_assign_pointer only prevents future RCU readers from obtaining the pointer -- it does not wait for existing readers that already hold it via rcu_dereference. The TX datapath (e.g. mt7996_mac_write_txwi) dereferences mlink->wcid and mlink->idx under rcu_read_lock. If a TX softirq obtained the pointer via rcu_dereference just before the NULL assignment, it will dereference freed memory after

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  11. CVE-2026-74324

    Nicht bewertetEPSS 0,21%Korrektur verfügbar

    wifi: mt76: mt7925: validate skb length in testmode query

    In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: validate skb length in testmode query In mt7925_tm_query(), the response skb from mt76_mcu_send_and_get_msg() is used in a memcpy without validating its length: memcpy(evt_resp, skb->data + 8, MT7925_EVT_RSP_LEN); where MT7925_EVT_RSP_LEN is 512. If the firmware returns a response shorter than 520 bytes (8 + 512), this reads beyond the skb data buffer. The over-read data is then returned to userspace via nla_put() in mt7925_testmode_dump(). Add a length check before the memcpy to ensure the skb contains sufficient data.

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  12. CVE-2026-74323

    Hoch · CVSS 8.8EPSS 0,38%Korrektur verfügbar

    wifi: mt76: mt7996: Fix possible token leak in mt7996_tx_prepare_skb()

    In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Fix possible token leak in mt7996_tx_prepare_skb() If link_conf or link_sta lookup fails in mt7996_tx_prepare_skb routine, mt7996 driver leaks an already allocated tx token. Fix the issue releasing the token in case of error.

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  13. CVE-2026-74322

    Nicht bewertetEPSS 0,21%Korrektur verfügbar

    wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()

    In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211() For injected frames (e.g. via radiotap), mac80211 can pass info->control.vif = NULL, as explicitly noted in struct ieee80211_tx_info. Check vif pointer before executing ieee80211_vif_is_mld() in mt7996_mac_write_txwi_80211 routine in order to avoid a possible NULL pointer dereference.

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  14. CVE-2026-74321

    Hoch · CVSS 7.5EPSS 0,72%Korrektur verfügbar

    btrfs: fix invalid pointer dereference in __btrfs_run_delayed_refs()

    In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid pointer dereference in __btrfs_run_delayed_refs() In the beginning of the loop, we try to obtain a locked delayed ref head, if 'locked_ref' is currently NULL, by calling btrfs_select_ref_head(), which can return an error pointer. If the error pointer is -EAGAIN we do a continue and go back to the beginning of the loop, which will not try again to call btrfs_select_ref_head() since 'locked_ref' is no longer NULL but it's ERR_PTR(-EAGAIN), and then we do: spin_lock(&locked_ref->lock); against a ERR_PTR(-EAGAIN) value, generating an invalid pointer dere

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  15. CVE-2026-74320

    Nicht bewertetEPSS 0,22%Korrektur verfügbar

    fbdev: sm501fb: Fix buffer errors in OF binding code

    In the Linux kernel, the following vulnerability has been resolved: fbdev: sm501fb: Fix buffer errors in OF binding code The code that gets the frame buffer mode from OF has 'use after free', 'buffer overrun' and memory leaks. info->edid_data isn't free if the probe functions fail or if pd->def_mode is set. If both the CRT and PANEL are enabled info->edid_data is used after being freed and is freed twice. The string returned by of_get_property(np, "mode", &len) is just written over either the static "640x480-16@60" or the module parameter string without any regard for the length (which is most likely longer). Use kstrump() for the OF mo

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  16. CVE-2026-74318

    Mittel · CVSS 5.7EPSS 0,21%Korrektur verfügbar

    btrfs: fix deadlock cloning inline extent when using flushoncommit

    In the Linux kernel, the following vulnerability has been resolved: btrfs: fix deadlock cloning inline extent when using flushoncommit In commit b48c980b6a7e ("btrfs: fix deadlock between reflink and transaction commit when using flushoncommit") a deadlock was fixed between reflinks and transaction commits when the fs is mounted with the flushoncommit option. This happened when we had to copy an inline extent's data to the destination file. However the issue was fixed only for the case where the destination offset is 0, it missed the case when the offset is greater than zero. Fix this by ensuring we get i_size update whenever we copied an

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  17. CVE-2026-74317

    Hoch · CVSS 7.8EPSS 0,13%Korrektur verfügbar

    ixgbe: do not configure xps for XDP queues

    In the Linux kernel, the following vulnerability has been resolved: ixgbe: do not configure xps for XDP queues netif_set_xps_queue() should not be called for an XDP Tx queue, since such queues are not netdev-exposed. On systems with number of CPUs >=64, on E610 adapter, netdev is configured with maximum number queue pairs being 63 (due to MSI-X assignment), but configuring XDP results in 64 XDP queues. So, during XDP program load, when netif_set_xps_queue() is called for the last XDP queue, we get a WARNING with a call trace and KASAN report afterwards (if enabled). [ 2012.699800] WARNING: net/core/dev.c:2854 at __netif_set_xps_queue+0x11

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  18. CVE-2026-74316

    Hoch · CVSS 7.5EPSS 0,63%Korrektur verfügbar

    NFSD: Handle layout stid in nfsd4_drop_revoked_stid()

    In the Linux kernel, the following vulnerability has been resolved: NFSD: Handle layout stid in nfsd4_drop_revoked_stid() nfsd4_drop_revoked_stid() has no SC_TYPE_LAYOUT case, so when a client sends FREE_STATEID for an admin-revoked layout stid, the default branch releases cl_lock and returns without unhashing or releasing the stid. The stid remains in the IDR and on the per-client list until the client is destroyed. Remove the layout stid from the per-client list and call nfs4_put_stid() to drop the creation reference. When the refcount reaches zero, nfsd4_free_layout_stateid() handles the remaining cleanup: cancelling the fence worker,

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  19. CVE-2026-74314

    Hoch · CVSS 7.8EPSS 0,18%Korrektur verfügbar

    bpf: Cancel special fields on map value recycle

    In the Linux kernel, the following vulnerability has been resolved: bpf: Cancel special fields on map value recycle Map update and delete paths currently call bpf_obj_free_fields() when a value is being replaced or recycled. That makes field destruction depend on the context of the update/delete operation. For tracing programs this can include NMI context, where referenced kptr destructors, uptr unpinning, and graph root destruction are not generally safe. Introduce bpf_obj_cancel_fields() for the reusable-value path. It only performs NMI-safe cleanup for timer, workqueue, and task_work fields. Fields that need full destruction are left at

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  20. CVE-2026-74313

    Hoch · CVSS 8.8EPSS 0,13%Korrektur verfügbar

    vduse: hold vduse_lock across IDR lookup in open path

    In the Linux kernel, the following vulnerability has been resolved: vduse: hold vduse_lock across IDR lookup in open path vduse_dev_open() looks up struct vduse_dev through the IDR and then acquires dev->lock only after vduse_lock has been dropped. This leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the same object from the IDR and free it before the open path locks the device, leading to a use-after-free. Close this race by keeping vduse_lock held until dev->lock has been acquired in the open path, matching the lock ordering already used by the destroy path.

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