CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-38166
https://notcve.org/view.php?id=CVE-2021-38166
In kernel/bpf/hashtab.c in the Linux kernel through 5.13.8, there is an integer overflow and out-of-bounds write when many elements are placed in a single bucket. NOTE: exploitation might be impractical without the CAP_SYS_ADMIN capability. En el archivo kernel/bpf/hashtab.c en el kernel de Linux versiones hasta 5.13.8, se presenta un desbordamiento de enteros y una escritura fuera de límites cuando son colocados muchos elementos en un solo cubo. NOTA: una explotación puede ser poco práctica sin la capacidad CAP_SYS_ADMIN • https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=c4eb1f403243fc7bbb7de644db8587c03de36da6 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUVLBJKZMWA3E3YXSH4SZ7BOYGJP4GXP https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UL6CH5M5PRLMA3KPBX4LPUO6Z73GRISO https://lore.kernel.org/bpf/20210806150419.109658-1-th.yasumatsu%40gmail.com https://security.netapp.com/advisory/ntap-20210909-0001 https://www.debian.org/security/2021/ • CWE-190: Integer Overflow or Wraparound CWE-787: Out-of-bounds Write •
CVSS: 8.8EPSS: 0%CPEs: 6EXPL: 1CVE-2021-30565
https://notcve.org/view.php?id=CVE-2021-30565
Out of bounds write in Tab Groups in Google Chrome on Linux and ChromeOS prior to 92.0.4515.107 allowed an attacker who convinced a user to install a malicious extension to perform an out of bounds memory write via a crafted HTML page. Una escritura fuera de límites en Tab Groups de Google Chrome en Linux y ChromeOS anterior a versión 92.0.4515.107, permitía a un atacante que convencía a un usuario de instalar una extensión maliciosa llevar a cabo una escritura fuera de límites en la memoria por medio de una página HTML diseñada • https://chromereleases.googleblog.com/2021/07/stable-channel-update-for-desktop_20.html https://crbug.com/1210985 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LVY4WIWTVVYKQMROJJS365TZBKEARCF https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPJPUSAWIJMQFBQQQYXAICLI4EKFQOH6 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QW4R2K5HVJ4R6XDZYOJCCFPIN2XHNS3L • CWE-787: Out-of-bounds Write •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2021-34556
https://notcve.org/view.php?id=CVE-2021-34556
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack. En el kernel de Linux versiones hasta 5.13.7, un programa BPF sin privilegios puede obtener información confidencial de la memoria del kernel por medio de un ataque de canal lateral Omisión de Almacenamiento Especulativo porque el mecanismo de protección no tiene en cuenta la posibilidad de ubicaciones de memoria no inicializadas en la pila BPF • http://www.openwall.com/lists/oss-security/2021/08/01/3 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=2039f26f3aca5b0e419b98f65dd36481337b86ee https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=f5e81d1117501546b7be050c5fbafa6efd2c722c https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/565ZS55ZFEN62WVRRORT7R63RXW5F4T4 https://lists.fedoraproject.org/a • CWE-203: Observable Discrepancy •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2021-35477
https://notcve.org/view.php?id=CVE-2021-35477
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value. En el kernel de Linux versiones 5.13.7, un programa BPF sin privilegios puede obtener información confidencial de la memoria del kernel por medio de un ataque de canal lateral de Omisión de Almacenamiento Especulativo porque una determinada operación de almacenamiento anticipada no ocurre necesariamente antes de una operación de almacenamiento que tiene un valor controlado por el atacante • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=2039f26f3aca5b0e419b98f65dd36481337b86ee https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=f5e81d1117501546b7be050c5fbafa6efd2c722c https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/565ZS55ZFEN62WVRRORT7R63RXW5F4T4 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6JKK6XNRZX5BT5QV • CWE-203: Observable Discrepancy •
CVSS: 7.8EPSS: 0%CPEs: 9EXPL: 1CVE-2021-37576 – kernel: powerpc: KVM guest OS users can cause host OS memory corruption
https://notcve.org/view.php?id=CVE-2021-37576
arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform allows KVM guest OS users to cause host OS memory corruption via rtas_args.nargs, aka CID-f62f3c20647e. El archivo arch/powerpc/kvm/book3s_rtas.c en el kernel de Linux versiones hasta 5.13.5, en la plataforma powerpc permite a usuarios del Sistema Operativo invitado de KVM causar una corrupción en la memoria del Sistema Operativo host por medio de rtas_args.nargs, también se conoce como CID-f62f3c20647e A flaw was found on the Linux kernel. On the PowerPC platform, the KVM guest allows the OS users to cause host OS memory corruption via rtas_args.nargs. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. • http://www.openwall.com/lists/oss-security/2021/07/27/2 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f62f3c20647ebd5fb6ecb8f0b477b9281c44c10a https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDFA7DSQIPM7XPNXJBXFWXHJFVUBCAG6 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2YZ2DNURMYYVDT2NYAFDESJC35KCUDS https://lore.kernel.org/linuxppc-dev/87im0x1lqi.fsf%40mpe.ellerman.id.au/T/#u https://security.n • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-787: Out-of-bounds Write •