CVSS: 4.7EPSS: 0%CPEs: 4EXPL: 0CVE-2022-39188 – kernel: unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry
https://notcve.org/view.php?id=CVE-2022-39188
An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs. Se ha detectado un problema en el archivo include/asm-generic/tlb.h en el kernel de Linux versiones anteriores a 5.19. Debido a una condición de carrera (unmap_mapping_range frente a munmap), un controlador de dispositivo puede liberar una página mientras todavía presenta entradas de TLB antiguas. • https://bugs.chromium.org/p/project-zero/issues/detail?id=2329 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15 https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15 https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iq • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-416: Use After Free •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2022-39190 – kernel: nf_tables disallow binding to already bound chain
https://notcve.org/view.php?id=CVE-2022-39190
An issue was discovered in net/netfilter/nf_tables_api.c in the Linux kernel before 5.19.6. A denial of service can occur upon binding to an already bound chain. Se ha detectado un problema en el archivo net/netfilter/nf_tables_api.c en el kernel de Linux versiones anteriores a 5.19.6. Puede producirse una denegación de servicio al vincularse a una cadena ya vinculada A flaw was found in net/netfilter/nf_tables_api.c in the Linux kernel. A denial of service can occur upon binding to an already bound chain. • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.6 https://github.com/torvalds/linux/commit/e02f0d3970404bfea385b6edb86f2d936db0ea2b https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html https://lore.kernel.org/all/20220824220330.64283-12-pablo%40netfilter.org https://twitter.com/pr0Ln https://access.redhat.com/security/cve/CVE-2022-39190 https://bugzilla.redhat.com/show_bug.cgi?id=2129152 • CWE-392: Missing Report of Error Condition •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0CVE-2022-3078
https://notcve.org/view.php?id=CVE-2022-3078
An issue was discovered in the Linux kernel through 5.16-rc6. There is a lack of check after calling vzalloc() and lack of free after allocation in drivers/media/test-drivers/vidtv/vidtv_s302m.c. Se ha detectado un problema en el kernel de Linux versiones hasta 5.16-rc6. Se presenta una falta de comprobación después de llamar a vzalloc() y una falta de liberación después de la asignación en drivers/media/test-drivers/vidtv/vidtv_s302m.c • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.19-rc2&id=e6a21a14106d9718aa4f8e115b1e474888eeba44 • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 11EXPL: 4CVE-2022-2639 – kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size()
https://notcve.org/view.php?id=CVE-2022-2639
An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size() function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system. Se ha encontrado un error de coerción de enteros en el módulo del kernel openvswitch. Dado un número suficientemente grande de acciones, mientras ses copiado y es reservada memoria para una nueva acción de un nuevo flujo, la función reserve_sfa_size() no devuelve -EMSGSIZE como es esperado, conllevando potencialmente a un acceso de escritura fuera de límites. • https://github.com/bb33bb/CVE-2022-2639-PipeVersion https://github.com/letsr00t/-2022-LOCALROOT-CVE-2022-2639 https://github.com/EkamSinghWalia/Detection-and-Mitigation-for-CVE-2022-2639 https://bugzilla.redhat.com/show_bug.cgi?id=2084479 https://github.com/torvalds/linux/commit/cefa91b2332d7009bc0be5d951d6cbbf349f90f8 https://access.redhat.com/security/cve/CVE-2022-2639 • CWE-192: Integer Coercion Error CWE-681: Incorrect Conversion between Numeric Types •
CVSS: 5.5EPSS: 0%CPEs: 6EXPL: 0CVE-2020-27784
https://notcve.org/view.php?id=CVE-2020-27784
A vulnerability was found in the Linux kernel, where accessing a deallocated instance in printer_ioctl() printer_ioctl() tries to access of a printer_dev instance. However, use-after-free arises because it had been freed by gprinter_free(). Se encontró una vulnerabilidad en el kernel de Linux, donde al acceder a una instancia desasignada en printer_ioctl() printer_ioctl() intenta acceder a una instancia de printer_dev. Sin embargo, es producido un uso de memoria previamente liberada porque había sido liberada por la función gprinter_free() • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8d5f92b8d30bb4ade76494490c3c065e12411b1 • CWE-201: Insertion of Sensitive Information Into Sent Data CWE-416: Use After Free •