CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-32606
https://notcve.org/view.php?id=CVE-2021-32606
In the Linux kernel 5.11 through 5.12.2, isotp_setsockopt in net/can/isotp.c allows privilege escalation to root by leveraging a use-after-free. (This does not affect earlier versions that lack CAN ISOTP SF_BROADCAST support.) En el kernel de Linux versiones 5.11 hasta 5.12.2, la función isotp_setsockopt en el archivo net/can/isotp.c permite una escalada de privilegios a root al aprovechar un uso de la memoria previamente liberada. (Esto no afecta a las versiones anteriores que carecen de compatibilidad con CAN ISOTP SF_BROADCAST) • http://www.openwall.com/lists/oss-security/2021/05/12/1 http://www.openwall.com/lists/oss-security/2021/05/13/2 http://www.openwall.com/lists/oss-security/2021/05/14/1 http://www.openwall.com/lists/oss-security/2021/05/28/1 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2b17c400aeb44daf041627722581ade527bb3c1d https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/73D53S4IZFPFQMRABMXXLW4AJK3EULDX https://lists.fedoraproject • CWE-416: Use After Free •
CVSS: 3.1EPSS: 0%CPEs: 338EXPL: 1CVE-2020-24587 – kernel: Reassembling fragments encrypted under different keys
https://notcve.org/view.php?id=CVE-2020-24587
The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed. El estándar 802.11 que sustenta a Wi-Fi Protected Access (WPA, WPA2, y WPA3) y Wired Equivalent Privacy (WEP) no requiere que todos los fragmentos de una trama estén cifrados con la misma clave. Un adversario puede abusar de esto para descifrar fragmentos seleccionados cuando otro dispositivo envía tramas fragmentadas y la clave de cifrado WEP, CCMP o GCMP es periódicamente renovada A flaw was found in the Linux kernel's WiFi implementation. An attacker within the wireless range can abuse a logic flaw in the WiFi implementation by reassembling packets from multiple fragments under different keys, treating them as valid. • http://www.openwall.com/lists/oss-security/2021/05/11/12 https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu https://www.arista.com/en/support/advisories-notices/security-advisories/12 • CWE-327: Use of a Broken or Risky Cryptographic Algorithm CWE-345: Insufficient Verification of Data Authenticity •
CVSS: 7.0EPSS: 0%CPEs: 19EXPL: 1CVE-2021-32399 – kernel: race condition for removal of the HCI controller
https://notcve.org/view.php?id=CVE-2021-32399
net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller. El archivo net/bluetooth/hci_request.c en el kernel de Linux versiones hasta 5.12.2, presenta una condición de carrera para la eliminación del controlador HCI A flaw was found in the Linux kernel’s handling of the removal of Bluetooth HCI controllers. This flaw allows an attacker with a local account to exploit a race condition, leading to corrupted memory and possible privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. • http://www.openwall.com/lists/oss-security/2021/05/11/2 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e2cb6b891ad2b8caa9131e3be70f45243df82a80 https://github.com/torvalds/linux/commit/e2cb6b891ad2b8caa9131e3be70f45243df82a80 https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://security.netapp.com/advisory/ntap-20210622-0006 https://access.redhat.com/security/cve/CVE-2021-32399 https:&#x • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 6.7EPSS: 0%CPEs: 4EXPL: 0CVE-2021-31916 – kernel: out of bounds array access in drivers/md/dm-ioctl.c
https://notcve.org/view.php?id=CVE-2021-31916
An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability. Se encontró un fallo de escritura de la memoria fuera de límites (OOB) en la función list_devices en el archivo drivers/md/dm-ioctl.c en el módulo de controlador Multi-device en el kernel de Linux versiones anteriores a 5.12. Un fallo de comprobación limitada permite a un atacante con privilegios de usuario especial (CAP_SYS_ADMIN) conseguir acceso a la memoria fuera de límites, conllevando a un bloqueo del sistema o una filtración de información interna del kernel. • https://bugzilla.redhat.com/show_bug.cgi?id=1946965 https://github.com/torvalds/linux/commit/4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://seclists.org/oss-sec/2021/q1/268 https://access.redhat.com/security/cve/CVE-2021-31916 • CWE-787: Out-of-bounds Write •
CVSS: 6.2EPSS: 0%CPEs: 5EXPL: 0CVE-2021-31829 – kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory
https://notcve.org/view.php?id=CVE-2021-31829
kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel. El archivo kernel/bpf/verifier.c en el kernel de Linux versiones hasta 5.12.1, lleva a cabo cargas especulativas no deseadas, conllevando a una divulgación del contenido de la pila por medio de ataques side-channel, también se conoce como CID-801c6058d14a. La preocupación específica no es proteger el área de la pila de BPF contra cargas especulativas. • http://www.openwall.com/lists/oss-security/2021/05/04/4 https://github.com/torvalds/linux/commit/801c6058d14a82179a7ee17a4b532cac6fad067f https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VWCZ6LJLENL2C3URW5ICARTACXPFCFN2 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4X2G5YAPYJGI3PFEZZNOTRYI33GOCCZ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-863: Incorrect Authorization •