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
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 turned off. [ 44.169899 ] irq event stamp: 0 [ 44.170160 ] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 44.170627 ] hardirqs last disabled at (0): [<ffffffff814209ed>] copy_process+0x132d/0x3e00 [ 44.171240 ] softirqs last enabled at (0): [<ffffffff81420a1a>] copy_process+0x135a/0x3e00 [ 44.171852 ] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 44.172318 ] Preemption disabled at: [ 44.172320 ] [<ffffffffa009b0a9>] nj_release+0x69/0x500 [netjet] [ 44.174441 ] Call Trace: [ 44.174630 ] dump_stack_lvl+0xa8/0xd1 [ 44.174912 ] dump_stack+0x15/0x17 [ 44.175166 ] ___might_sleep+0x3a2/0x510 [ 44.175459 ] ? nj_release+0x69/0x500 [netjet] [ 44.175791 ] __might_sleep+0x82/0xe0 [ 44.176063 ] ? start_flush_work+0x20/0x7b0 [ 44.176375 ] start_flush_work+0x33/0x7b0 [ 44.176672 ] ? trace_irq_enable_rcuidle+0x85/0x170 [ 44.177034 ] ? kasan_quarantine_put+0xaa/0x1f0 [ 44.177372 ] ? • https://git.kernel.org/stable/c/6f95c97e0f9d6eb39c3f2cb45e8fa4268d1b372b https://git.kernel.org/stable/c/ef269a8808cb1759245a98a7fe16fceaebad894c https://git.kernel.org/stable/c/37e4f57b22cc5ebb3f80cf0f74fdeb487f082367 https://git.kernel.org/stable/c/a5b34409d3fc52114c828be4adbc30744fa3258b https://git.kernel.org/stable/c/4054b869dc263228d30a4755800b78f0f2ba0c89 https://git.kernel.org/stable/c/9f591cbdbed3d7822b2bdba89b34a6d7b434317d https://git.kernel.org/stable/c/f5966ba53013149bcf94e1536644a958dd00a026 https://git.kernel.org/stable/c/6510e80a0b81b5d814e3aea6297ba42f5 • CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •
CVSS: -EPSS: 0%CPEs: 2EXPL: 0CVE-2021-47467 – kunit: fix reference count leak in kfree_at_end
https://notcve.org/view.php?id=CVE-2021-47467
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 <skhan@linuxfoundation.org> CHECK: Alignment should match open parenthesis + kunit_alloc_resource(test, NULL, kfree_res_free, GFP_KERNEL, (void *)to_free); En el kernel de Linux, se resolvió la siguiente vulnerabilidad: kunit: corrige la fuga del recuento de referencias en kfree_at_end El problema del recuento de referencias ocurre en la ruta normal de kfree_at_end(). Cuando se invoca kunit_alloc_and_get_resource(), la función se olvida de manejar el objeto de recurso devuelto, cuyo recuento aumentó en el interior, lo que provoca una fuga de recuento. Solucione este problema llamando a kunit_alloc_resource() en lugar de kunit_alloc_and_get_resource(). Se corrigió lo siguiente al aplicar: Shuah Khan VERIFICAR: La alineación debe coincidir con el paréntesis abierto + kunit_alloc_resource(test, NULL, kfree_res_free, GFP_KERNEL, (void *)to_free); • https://git.kernel.org/stable/c/bbdd158b40b66a9403391a517f24ef6613573446 https://git.kernel.org/stable/c/f62314b1ced25c58b86e044fc951cd6a1ea234cf •
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
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 usando __kmem_cache_release() para liberar todos los recursos relevantes. • https://git.kernel.org/stable/c/210e7a43fa905bccafa9bb5966fba1d71f33eb8b https://git.kernel.org/stable/c/4f5d1c29cfab5cb0ab885059818751bdef32e2bb https://git.kernel.org/stable/c/568f906340b43120abd6fcc67c37396482f85930 https://git.kernel.org/stable/c/42b81946e3ac9ea0372ba16e05160dc11e02694f https://git.kernel.org/stable/c/9037c57681d25e4dcc442d940d6dbe24dd31f461 https://access.redhat.com/security/cve/CVE-2021-47466 https://bugzilla.redhat.com/show_bug.cgi?id=2282890 • CWE-402: Transmission of Private Resources into a New Sphere ('Resource Leak') •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47458 – ocfs2: mount fails with buffer overflow in strlen
https://notcve.org/view.php?id=CVE-2021-47458
In the Linux kernel, the following vulnerability has been resolved: ocfs2: mount fails with buffer overflow in strlen Starting with kernel 5.11 built with CONFIG_FORTIFY_SOURCE mouting an ocfs2 filesystem with either o2cb or pcmk cluster stack fails with the trace below. Problem seems to be that strings for cluster stack and cluster name are not guaranteed to be null terminated in the disk representation, while strlcpy assumes that the source string is always null terminated. This causes a read outside of the source string triggering the buffer overflow detection. detected buffer overflow in strlen ------------[ cut here ]------------ kernel BUG at lib/string.c:1149! invalid opcode: 0000 [#1] SMP PTI CPU: 1 PID: 910 Comm: mount.ocfs2 Not tainted 5.14.0-1-amd64 #1 Debian 5.14.6-2 RIP: 0010:fortify_panic+0xf/0x11 ... Call Trace: ocfs2_initialize_super.isra.0.cold+0xc/0x18 [ocfs2] ocfs2_fill_super+0x359/0x19b0 [ocfs2] mount_bdev+0x185/0x1b0 legacy_get_tree+0x27/0x40 vfs_get_tree+0x25/0xb0 path_mount+0x454/0xa20 __x64_sys_mount+0x103/0x140 do_syscall_64+0x3b/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ocfs2: el montaje falla con desbordamiento del búfer en strlen. A partir del kernel 5.11 compilado con CONFIG_FORTIFY_SOURCE, la conexión de un sistema de archivos ocfs2 con una pila de clúster o2cb o pcmk falla con el siguiente seguimiento. • https://git.kernel.org/stable/c/ac011cb3ff7a76b3e0e6e77158ee4ba2f929e1fb https://git.kernel.org/stable/c/4b74ddcc22ee6455946e80a9c4808801f8f8561e https://git.kernel.org/stable/c/232ed9752510de4436468b653d145565669c8498 https://git.kernel.org/stable/c/7623b1035ca2d17bde0f6a086ad6844a34648df1 https://git.kernel.org/stable/c/d3a83576378b4c904f711598dde2c5e881c4295c https://git.kernel.org/stable/c/93be0eeea14cf39235e585c8f56df3b3859deaad https://git.kernel.org/stable/c/0e677ea5b7396f715a76b6b0ef441430e4c4b57f https://git.kernel.org/stable/c/b15fa9224e6e1239414525d8d556d8247 •
CVSS: 8.4EPSS: 0%CPEs: 8EXPL: 0CVE-2021-47456 – can: peak_pci: peak_pci_remove(): fix UAF
https://notcve.org/view.php?id=CVE-2021-47456
In the Linux kernel, the following vulnerability has been resolved: can: peak_pci: peak_pci_remove(): fix UAF When remove the module peek_pci, referencing 'chan' again after releasing 'dev' will cause UAF. Fix this by releasing 'dev' later. The following log reveals it: [ 35.961814 ] BUG: KASAN: use-after-free in peak_pci_remove+0x16f/0x270 [peak_pci] [ 35.963414 ] Read of size 8 at addr ffff888136998ee8 by task modprobe/5537 [ 35.965513 ] Call Trace: [ 35.965718 ] dump_stack_lvl+0xa8/0xd1 [ 35.966028 ] print_address_description+0x87/0x3b0 [ 35.966420 ] kasan_report+0x172/0x1c0 [ 35.966725 ] ? peak_pci_remove+0x16f/0x270 [peak_pci] [ 35.967137 ] ? trace_irq_enable_rcuidle+0x10/0x170 [ 35.967529 ] ? peak_pci_remove+0x16f/0x270 [peak_pci] [ 35.967945 ] __asan_report_load8_noabort+0x14/0x20 [ 35.968346 ] peak_pci_remove+0x16f/0x270 [peak_pci] [ 35.968752 ] pci_device_remove+0xa9/0x250 En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: pico_pci: pico_pci_remove(): arreglar UAF Cuando se elimina el módulo peek_pci, hacer referencia a 'chan' nuevamente después de liberar 'dev' causará UAF. Solucione este problema lanzando 'dev' más tarde. • https://git.kernel.org/stable/c/e6d9c80b7ca1504411ad6d7acdb8683e4ae1c9cd https://git.kernel.org/stable/c/1c616528ba4aeb1125a06b407572ab7b56acae38 https://git.kernel.org/stable/c/447d44cd2f67a20b596ede3ca3cd67086dfd9ca9 https://git.kernel.org/stable/c/34914971bb3244db4ce2be44e9438a9b30c56250 https://git.kernel.org/stable/c/adbda14730aacce41c0d3596415aa39ad63eafd9 https://git.kernel.org/stable/c/1248582e47a9f7ce0ecd156c39fc61f8b6aa3699 https://git.kernel.org/stable/c/28f28e4bc3a5e0051faa963f10b778ab38c1db69 https://git.kernel.org/stable/c/0e5afdc2315b0737edcf55bede4ee1640 • CWE-416: Use After Free CWE-467: Use of sizeof() on a Pointer Type •