CVSS: 4.4EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47468 – isdn: mISDN: Fix sleeping function called from invalid context
https://notcve.org/view.php?id=CVE-2021-47468
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: isdn: mISDN: Fix sleeping function called from invalid context The driver can call card->isac.release() function from an atomic context. Fix this by calling this function after releasing the lock. The following log reveals it: [ 44.168226 ] BUG: sleeping function called from invalid context at kernel/workqueue.c:3018 [ 44.168941 ] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 5475, name: modprobe [ 44.169574 ] INFO: lockdep is turn... • https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b • CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •
CVSS: 5.3EPSS: 0%CPEs: 2EXPL: 0CVE-2021-47467 – kunit: fix reference count leak in kfree_at_end
https://notcve.org/view.php?id=CVE-2021-47467
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: kunit: fix reference count leak in kfree_at_end The reference counting issue happens in the normal path of kfree_at_end(). When kunit_alloc_and_get_resource() is invoked, the function forgets to handle the returned resource object, whose refcount increased inside, causing a refcount leak. Fix this issue by calling kunit_alloc_resource() instead of kunit_alloc_and_get_resource(). Fixed the following when applying: Shuah Khan
CVSS: 7.1EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47466 – mm, slub: fix potential memoryleak in kmem_cache_open()
https://notcve.org/view.php?id=CVE-2021-47466
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: mm, slub: fix potential memoryleak in kmem_cache_open() In error path, the random_seq of slub cache might be leaked. Fix this by using __kmem_cache_release() to release all the relevant resources. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm, slub: corrige una posible pérdida de memoria en kmem_cache_open() En la ruta del error, es posible que se haya filtrado el random_seq del caché slub. Solucione este problema us... • https://git.kernel.org/stable/c/210e7a43fa905bccafa9bb5966fba1d71f33eb8b • CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak') •
CVSS: 7.1EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47465 – KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest()
https://notcve.org/view.php?id=CVE-2021-47465
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest() In commit 10d91611f426 ("powerpc/64s: Reimplement book3s idle code in C") kvm_start_guest() became idle_kvm_start_guest(). The old code allocated a stack frame on the emergency stack, but didn't use the frame to store anything, and also didn't store anything in its caller's frame. idle_kvm_start_guest() on the other hand is written more like a normal C function, it creates a ... • https://git.kernel.org/stable/c/10d91611f426d4bafd2a83d966c36da811b2f7ad •
CVSS: 7.4EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47464 – audit: fix possible null-pointer dereference in audit_filter_rules
https://notcve.org/view.php?id=CVE-2021-47464
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: audit: fix possible null-pointer dereference in audit_filter_rules Fix possible null-pointer dereference in audit_filter_rules. audit_filter_rules() error: we previously assumed 'ctx' could be null En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: auditoría: corrige una posible desreferencia de puntero nulo en audit_filter_rules. Corrige una posible desreferencia de puntero nulo en audit_filter_rules. Error audit_filter_rul... • https://git.kernel.org/stable/c/bf361231c295d92a28ca283ea713f56e93e55796 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2021-47463 – mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem()
https://notcve.org/view.php?id=CVE-2021-47463
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem() Check for a NULL page->mapping before dereferencing the mapping in page_is_secretmem(), as the page's mapping can be nullified while gup() is running, e.g. by reclaim or truncation. BUG: kernel NULL pointer dereference, address: 0000000000000068 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP ... • https://git.kernel.org/stable/c/1507f51255c9ff07d75909a84e7c0d7f3c4b2f49 •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2021-47462 – mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()
https://notcve.org/view.php?id=CVE-2021-47462
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind() syzbot reported access to unitialized memory in mbind() [1] Issue came with commit bda420b98505 ("numa balancing: migrate on fault among multiple bound nodes") This commit added a new bit in MPOL_MODE_FLAGS, but only checked valid combination (MPOL_F_NUMA_BALANCING can only be used with MPOL_BIND) in do_set_mempolicy() This patch moves the check in sanitize_mpo... • https://git.kernel.org/stable/c/bda420b985054a3badafef23807c4b4fa38a3dff •
CVSS: 7.0EPSS: 0%CPEs: 3EXPL: 0CVE-2021-47461 – userfaultfd: fix a race between writeprotect and exit_mmap()
https://notcve.org/view.php?id=CVE-2021-47461
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: userfaultfd: fix a race between writeprotect and exit_mmap() A race is possible when a process exits, its VMAs are removed by exit_mmap() and at the same time userfaultfd_writeprotect() is called. The race was detected by KASAN on a development kernel, but it appears to be possible on vanilla kernels as well. Use mmget_not_zero() to prevent the race as done in other userfaultfd operations. En el kernel de Linux, se ha resuelto la siguiente ... • https://git.kernel.org/stable/c/63b2d4174c4ad1f40b48d7138e71bcb564c1fe03 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47460 – ocfs2: fix data corruption after conversion from inline format
https://notcve.org/view.php?id=CVE-2021-47460
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix data corruption after conversion from inline format Commit 6dbf7bb55598 ("fs: Don't invalidate page buffers in block_write_full_page()") uncovered a latent bug in ocfs2 conversion from inline inode format to a normal inode format. The code in ocfs2_convert_inline_data_to_extents() attempts to zero out the whole cluster allocated for file data by grabbing, zeroing, and dirtying all pages covering this cluster. However these pages ... • https://git.kernel.org/stable/c/acef5107e2eacb08a16ad5db60320d65bd26a6c0 •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47459 – can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv
https://notcve.org/view.php?id=CVE-2021-47459
22 May 2024 — In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv It will trigger UAF for rx_kref of j1939_priv as following. cpu0 cpu1 j1939_sk_bind(socket0, ndev0, ...) j1939_netdev_start j1939_sk_bind(socket1, ndev0, ...) j1939_netdev_start j1939_priv_set j1939_priv_get_by_ndev_locked j1939_jsk_add ..... j1939_netdev_stop kref_put_lock(&priv->rx_kref, ...) kref_get(&priv->rx_kref, ...) REFCOUNT_WARN("addition on 0;...") ===============... • https://git.kernel.org/stable/c/9d71dd0c70099914fcd063135da3c580865e924c • CWE-416: Use After Free •