CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 2CVE-2022-3910 – Use after free in IO_uring in the Linux Kernel
https://notcve.org/view.php?id=CVE-2022-3910
Use After Free vulnerability in Linux Kernel allows Privilege Escalation. An improper Update of Reference Count in io_uring leads to Use-After-Free and Local Privilege Escalation. When io_msg_ring was invoked with a fixed file, it called io_fput_file() which improperly decreased its reference count (leading to Use-After-Free and Local Privilege Escalation). Fixed files are permanently registered to the ring, and should not be put separately. We recommend upgrading past commit https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679 https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679 La vulnerabilidad de Use After Free en el kernel de Linux permite la escalada de privilegios. Una actualización incorrecta del recuento de referencias en io_uring conduce a un use-after-free y escalada de privilegios locales. Cuando se invocó io_msg_ring con un archivo fijo, llamó a io_fput_file(), lo que disminuyó incorrectamente su recuento de referencias (lo que llevó a Use-After-Free y Escalada de privilegios locales). • https://github.com/veritas501/CVE-2022-3910 https://github.com/TLD1027/CVE-2022-3910 https://github.com/torvalds/linux/commit/fc7222c3a9f56271fba02aabbfbae999042f1679 https://kernel.dance/#fc7222c3a9f56271fba02aabbfbae999042f1679 • CWE-416: Use After Free •
CVSS: 7.5EPSS: 0%CPEs: 13EXPL: 0CVE-2022-43945 – kernel: nfsd buffer overflow by RPC message over TCP with garbage data
https://notcve.org/view.php?id=CVE-2022-43945
The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer overflow. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send buffers of a remote procedure call (RPC) into a single array of pages. A client can force the send buffer to shrink by sending an RPC message over TCP with garbage data added at the end of the message. The RPC message with garbage data is still correctly formed according to the specification and is passed forward to handlers. Vulnerable code in NFSD is not expecting the oversized request and writes beyond the allocated buffer space. • http://packetstormsecurity.com/files/171289/Kernel-Live-Patch-Security-Notice-LNS-0092-1.html https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f90497a16e434c2211c66e3de8e77b17868382b8 https://security.netapp.com/advisory/ntap-20221215-0006 https://access.redhat.com/security/cve/CVE-2022-43945 https://bugzilla.redhat.com/show_bug.cgi?id=2141752 • CWE-131: Incorrect Calculation of Buffer Size CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 6.4EPSS: 0%CPEs: 1EXPL: 0CVE-2022-44033
https://notcve.org/view.php?id=CVE-2022-44033
An issue was discovered in the Linux kernel through 6.0.6. drivers/char/pcmcia/cm4040_cs.c has a race condition and resultant use-after-free if a physically proximate attacker removes a PCMCIA device while calling open(), aka a race condition between cm4040_open() and reader_detach(). Se descubrió un problema en el kernel de Linux hasta la versión 6.0.6. drivers/char/pcmcia/cm4040_cs.c tiene una condición de ejecución y Use-After-Free resultante si un atacante físicamente cercano elimina un dispositivo PCMCIA mientras llama a open(), también conocido como una condición de ejecución entre cm4040_open() y Reader_detach(). • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9b12f050c76f090cc6d0aebe0ef76fed79ec3f15 https://lore.kernel.org/lkml/20220915020834.GA110086%40ubuntu https://lore.kernel.org/lkml/20220919040457.GA302681%40ubuntu • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 6.4EPSS: 0%CPEs: 1EXPL: 0CVE-2022-44032
https://notcve.org/view.php?id=CVE-2022-44032
An issue was discovered in the Linux kernel through 6.0.6. drivers/char/pcmcia/cm4000_cs.c has a race condition and resultant use-after-free if a physically proximate attacker removes a PCMCIA device while calling open(), aka a race condition between cmm_open() and cm4000_detach(). Se descubrió un problema en el kernel de Linux hasta la versión 6.0.6. drivers/char/pcmcia/cm4000_cs.c tiene una condición de ejecución y Use-After-Free resultante si un atacante físicamente cercano elimina un dispositivo PCMCIA mientras llama a open(), también conocido como una condición de ejecución entre cmm_open() y cm4000_detach(). • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9b12f050c76f090cc6d0aebe0ef76fed79ec3f15 https://lore.kernel.org/lkml/20220915020834.GA110086%40ubuntu https://lore.kernel.org/lkml/20220919040701.GA302806%40ubuntu • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 6.4EPSS: 0%CPEs: 1EXPL: 0CVE-2022-44034
https://notcve.org/view.php?id=CVE-2022-44034
An issue was discovered in the Linux kernel through 6.0.6. drivers/char/pcmcia/scr24x_cs.c has a race condition and resultant use-after-free if a physically proximate attacker removes a PCMCIA device while calling open(), aka a race condition between scr24x_open() and scr24x_remove(). Se descubrió un problema en el kernel de Linux hasta la versión 6.0.6. drivers/char/pcmcia/scr24x_cs.c tiene una condición de ejecución y Use-After-Free resultante si un atacante físicamente cercano elimina un dispositivo PCMCIA mientras llama a open(), también conocido como una condición de ejecución entre scr24x_open() y scr24x_remove(). • https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9b12f050c76f090cc6d0aebe0ef76fed79ec3f15 https://lore.kernel.org/lkml/20220916050333.GA188358%40ubuntu https://lore.kernel.org/lkml/20220919101825.GA313940%40ubuntu • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •