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Sicherheitslücken in linux-hwe-6.17 · Seite 165

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für linux-hwe-6.17: 944. Davon im KEV-Katalog: 0.

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  1. CVE-2026-74382

    Nicht bewertetEPSS 0,19%Keine Korrektur veröffentlicht

    net/sched: cls_bpf: prevent unbounded recursion in offload rollback

    In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_bpf: prevent unbounded recursion in offload rollback Quan Sun reported [1] a stack overflow in cls_bpf_offload_cmd(). Reproducer on netdevsim: add a skip_sw cls_bpf filter, set the bpf_tc_accept debugfs knob to 0, then `tc filter replace`. The replace calls tc_setup_cb_replace() which fails. cls_bpf_offload_cmd() then swaps prog/oldprog and recursively calls itself to roll back. But bpf_tc_accept=0 makes the rollback fail too, which triggers yet another rollback frame with the same arguments, and so on until the stack is exhausted. bpf_tc_accept is just a c

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  2. CVE-2026-74381

    Nicht bewertetEPSS 0,21%Keine Korrektur veröffentlicht

    gpu: host1x: Allow entries in BO caches to be freed

    In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Allow entries in BO caches to be freed When a buffer object is pinned via host1x_bo_pin() with a cache, the resulting mapping is kept in the cache so it can be reused on subsequent pins. Each mapping held a reference to the underlying host1x_bo (taken in tegra_bo_pin / gather_bo_pin), so as long as a mapping was cached, the bo itself could not be freed. However, the only way to remove the cached mapping was through the free path of the buffer object. This meant that if a bo got cached, it could never get freed again. Resolve the circularity by holding a weak

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  3. CVE-2026-74380

    Hoch · CVSS 8.8EPSS 0,18%Keine Korrektur veröffentlicht

    gpu: host1x: Fix iommu_map_sgtable() return value check

    In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix iommu_map_sgtable() return value check Commit "iommu: return full error code from iommu_map_sg[_atomic]()" changed iommu_map_sgtable() to return an ssize_t and negative values in error cases, rather than a size_t and a zero. pin_job() also was incorrectly assigning to 'int', which could cause overflows into negative values. Update pin_job() to correctly check for errors from iommu_map_sgtable.

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  4. CVE-2026-74379

    Nicht bewertetEPSS 0,17%Keine Korrektur veröffentlicht

    dax/kmem: account for partial discontiguous resource upon removal

    In the Linux kernel, the following vulnerability has been resolved: dax/kmem: account for partial discontiguous resource upon removal When dev_dax_kmem_probe() partially succeeds (at least one range is mapped) but a subsequent range fails request_mem_region() or add_memory_driver_managed(), the probe silently continues, ultimately returning success, but with the corresponding range resource NULL'ed out. dev_dax_kmem_remove() iterates over all dax_device ranges regardless of if the underlying resource exists. When remove_memory() is called later, it returns 0 because the memory was never added which causes dev_dax_kmem_remove() to incorrec

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  5. CVE-2026-74378

    Hoch · CVSS 7.8EPSS 0,14%Keine Korrektur veröffentlicht

    RDMA/rxe: Fix TOCTOU heap overflow in get_srq_wqe

    In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix TOCTOU heap overflow in get_srq_wqe get_srq_wqe() reads wqe->dma.num_sge from the shared receive queue buffer, which is mapped into userspace. It validates num_sge against max_sge, but then re-reads the same field to calculate the memcpy size. A concurrent userspace thread can modify num_sge between validation and use, causing a heap buffer overflow when copying the WQE into qp->resp.srq_wqe. Read num_sge into a local variable and use it for both the bounds check and the size calculation.

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  6. CVE-2026-74377

    Hoch · CVSS 7.8EPSS 0,13%Keine Korrektur veröffentlicht

    RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path

    In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path For non-SRQ QPs, the responder reads WQE fields directly from the shared queue buffer mapped into userspace. This allows a malicious user to modify fields like num_sge or sge entries while the kernel is processing the WQE, leading to out-of-bounds reads in rxe_resp_check_length() and copy_data(). Introduce get_recv_wqe() that validates num_sge and copies the WQE to a kernel-local buffer before processing, matching the approach already used for SRQ WQEs in get_srq_wqe(). The srq_wqe buffer is reused since SRQ and no

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  7. CVE-2026-74376

    Kritisch · CVSS 9.8EPSS 0,5%Keine Korrektur veröffentlicht

    md/raid10: reset read_slot when reusing r10bio for discard

    In the Linux kernel, the following vulnerability has been resolved: md/raid10: reset read_slot when reusing r10bio for discard put_all_bios() always drops devs[i].bio, but it only drops devs[i].repl_bio when r10_bio->read_slot < 0. If discard reuses an r10bio that was previously used for a read, read_slot can still be non-negative, and discard cleanup can skip bio_put() on repl_bio. Reset read_slot to -1 when preparing an r10bio for discard so the replacement bio is always released correctly.

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  8. CVE-2026-74375

    Nicht bewertetEPSS 0,17%Keine Korrektur veröffentlicht

    md/raid1,raid10: fix deadlock in read error recovery path

    In the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: fix deadlock in read error recovery path raid1d and raid10d may resubmit a split md cloned bio while handling a read error. In this case, resubmitting the bio can lead to a deadlock if the array is suspended before md_handle_request() acquires an active_io reference via percpu_ref_tryget_live(). Since the cloned bio already holds an active_io reference, trying to acquire another reference via percpu_ref_tryget_live() can lead to a deadlock while the array is suspended. Fix this by using percpu_ref_get() for md cloned bios.

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  9. CVE-2026-74374

    Hoch · CVSS 7.5EPSS 0,63%Keine Korrektur veröffentlicht

    md/raid1,raid10: fix error-path detection with md_cloned_bio()

    In the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: fix error-path detection with md_cloned_bio() Detect the error path using md_cloned_bio() instead of relying on r1_bio in raid1 or r10_bio->read_slot in raid10, which may be NULL or -1 after splitting and resubmitting a failed bio. As a result, the error path may not be recognized and memory allocations can incorrectly use GFP_NOIO instead of (GFP_NOIO | __GFP_HIGH), which can lead to a deadlock under memory pressure.

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  10. CVE-2026-74373

    Nicht bewertetEPSS 0,21%Keine Korrektur veröffentlicht

    md/raid1,raid10: fix bio accounting for split md cloned bios

    In the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: fix bio accounting for split md cloned bios Use md_cloned_bio() to control bio accounting instead of relying on r1bio_existed in raid1 or the io_accounting flag in raid10. The previous logic does not reliably reflect whether a bio is an md cloned bio. When a failed bio is split and resubmitted via bio_submit_split_bioset() on the error path, this can lead to either double accounting for md cloned bios, or missing accounting for bios returned from bio_submit_split_bioset() Fix this by using md_cloned_bio() to detect md cloned bios and skip accounting accor

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  11. CVE-2026-74372

    Nicht bewertetEPSS 0,21%Keine Korrektur veröffentlicht

    raid1: fix nr_pending leak in REQ_ATOMIC bad-block error path

    In the Linux kernel, the following vulnerability has been resolved: raid1: fix nr_pending leak in REQ_ATOMIC bad-block error path In raid1_write_request(), each per-mirror loop iteration begins by incrementing rdev->nr_pending. If a REQ_ATOMIC write encounters a badblock within the requested range, the code jumps to err_handle without dropping the reference taken for the current mirror. err_handle's cleanup loop will only decrements for k < i and r1_bio->bios[k] is non-NULL. The current slot is therefore skipped, leaving its nr_pending reference leaked permanently. The reference prevents the rdev from ever being removed, since raid1_remove

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  12. CVE-2026-74371

    Hoch · CVSS 7.8EPSS 0,18%Keine Korrektur veröffentlicht

    bpf: fix BPF_PROG_QUERY OOB write and cgroup backward compat

    In the Linux kernel, the following vulnerability has been resolved: bpf: fix BPF_PROG_QUERY OOB write and cgroup backward compat BPF_PROG_QUERY writes back the 'query.revision' field unconditionally to userspace. If userspace passes a smaller 'bpf_attr' structure (e.g. 40 bytes, which was the layout before the addition of 'query.revision'), the kernel performs an out-of-bounds write. Fix this by propagating the user-provided attribute size 'uattr_size' down to the cgroup query handlers, and conditionally skipping writing the revision field to userspace when the provided buffer size is insufficient. query.revision in bpf_mprog_query is str

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  13. CVE-2026-74368

    Mittel · CVSS 6.9EPSS 0,17%Keine Korrektur veröffentlicht

    wifi: ath12k: fix memory leak in ath12k_wifi7_dp_rx_h_verify_tkip_mic()

    In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix memory leak in ath12k_wifi7_dp_rx_h_verify_tkip_mic() In ath12k_wifi7_dp_rx_h_verify_tkip_mic(), the call to ath12k_dp_rx_check_nwifi_hdr_len_valid() may return false when the NWIFI header length is invalid, causing the function to abort early with -EINVAL. When this happens, the error propagates to ath12k_wifi7_dp_rx_h_defrag(), which clears first_frag by setting it to NULL. As a result, the corresponding MSDU is no longer referenced by the defragmentation path and is never freed. This leads to a memory leak for the affected MSDU on this error path. Pro

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  14. CVE-2026-74367

    Hoch · CVSS 7.8EPSS 0,17%Keine Korrektur veröffentlicht

    wifi: ath12k: fix inconsistent arvif state in vdev_create error paths

    In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix inconsistent arvif state in vdev_create error paths ath12k_mac_vdev_create() has three error path issues that leave arvif in an inconsistent state: 1. When ath12k_wmi_vdev_create() fails, the function returns directly without clearing arvif->ar, which was already set before the WMI call. Subsequent code checking arvif->ar to determine vdev readiness will see a non-NULL value despite no vdev existing in firmware. 2. When ath12k_wmi_send_peer_delete_cmd() fails in err_peer_del, the code jumped to err: skipping the DP peer cleanup and vdev rollb

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  15. CVE-2026-74366

    Nicht bewertetEPSS 0,21%Keine Korrektur veröffentlicht

    wifi: ath12k: fix NULL deref in change_sta_links for unready link

    In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix NULL deref in change_sta_links for unready link _ieee80211_set_active_links() calls _ieee80211_link_use_channel() for each newly-added link and WARN_ON_ONCE()s if it fails. The call uses assign_on_failure=true, which allows mac80211 to continue despite driver failures, but when a mac80211-level channel validation fails (e.g., combinations check, DFS, or no available radio), drv_assign_vif_chanctx() is never reached. Since ath12k_mac_vdev_create() is only called from that path, arvif->is_created remains false and arvif->ar remains NULL for the failed link.

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  16. CVE-2026-74365

    Hoch · CVSS 7.3EPSS 0,13%Keine Korrektur veröffentlicht

    nvdimm/btt: Handle preemption in BTT lane acquisition

    In the Linux kernel, the following vulnerability has been resolved: nvdimm/btt: Handle preemption in BTT lane acquisition BTT lanes serialize access to per-lane metadata and workspace state during BTT I/O. The btt-check unit test reports data mismatches during BTT writes due to a race in lane acquisition that can lead to silent data corruption. The existing lane model uses a spinlock together with a per-CPU recursion count. That recursion model stopped being valid after BTT lanes became preemptible: another task can run on the same CPU, observe a non-zero recursion count, bypass locking, and use the same lane concurrently. BTT lanes are a

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  17. CVE-2026-74363

    Hoch · CVSS 7.8EPSS 0,13%Keine Korrektur veröffentlicht

    bpf: fix UAF by restoring RCU-delayed inode freeing in bpffs

    In the Linux kernel, the following vulnerability has been resolved: bpf: fix UAF by restoring RCU-delayed inode freeing in bpffs commit 4f375ade6aa9 ("bpf: Avoid RCU context warning when unpinning htab with internal structs") moved inode cleanup from ->free_inode() into ->destroy_inode() to avoid sleeping in RCU context when calling bpf_any_put(). However this removed the RCU delay on freeing the inode itself and the cached symlink body (i_link), both of which can be accessed by RCU pathwalk (pick_link, may_lookup etc.). This causes a use-after-free when a concurrent unlinkat() drops the last inode reference and destroy_inode() frees the i

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  18. CVE-2026-74362

    Nicht bewertetEPSS 0,21%Keine Korrektur veröffentlicht

    ext2: fix ignored return value of generic_write_sync()

    In the Linux kernel, the following vulnerability has been resolved: ext2: fix ignored return value of generic_write_sync() Fix ext2_dio_write_iter() to propagate the error returned by generic_write_sync() instead of silently discarding it, which could cause write(2) to return success to userspace on O_SYNC/O_DSYNC files even when the sync failed. The correct pattern, already used in ext2_dax_write_iter() in the same file and in ext4, xfs, f2fs among others, is: if (ret > 0) ret = generic_write_sync(iocb, ret); Found by Linux Verification Center (linuxtesting.org) with SVACE. [JK: Reflect also filemap_write_and_wait() return v

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  19. CVE-2026-74361

    Kritisch · CVSS 9.8EPSS 0,65%Keine Korrektur veröffentlicht

    nvme: fix FDP fdpcidx bounds check

    In the Linux kernel, the following vulnerability has been resolved: nvme: fix FDP fdpcidx bounds check The fdpcidx bounds check sets n = NUMFDPC + 1 but used > instead of >=, incorrectly accepting fdp_idx when it equals n (i.e. NUMFDPC + 1).

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  20. CVE-2026-74359

    Hoch · CVSS 7.8EPSS 0,13%Keine Korrektur veröffentlicht

    configfs_lookup(): don't leave ->s_dentry dangling on failure

    In the Linux kernel, the following vulnerability has been resolved: configfs_lookup(): don't leave ->s_dentry dangling on failure Normally ->s_dentry is cleared when dentry it's pointing to becomes negative (on eviction, realistically). However, that only happens if dentry gets to be positive in the first place; in case of inode allocation failure dentry never becomes positive, so ->d_iput() is not called at all. We do part of what normally would've been done by configfs_d_iput() (dropping the reference to configfs_dirent) manually, but we do not clear ->s_dentry there. Sloppy as it is, it does not matter in case of configfs_create_{dir,

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