K42323475: Linux kernel vulnerability CVE-2021-3444

Security Advisory Description The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to...

K18004724: Linux kernel vulnerability CVE-2020-8835

Security Advisory Description In the Linux kernel 5.5.0 and newer, the bpf verifier kernel/bpf/verifier.c did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series,...

K72118410: Linux kernel vulnerability CVE-2021-29154

Security Advisory Description BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpfjitcomp.c and arch/x86/net/bpfjitcomp32.c. CVE-2021-29154 Impact...

Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5877-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5877-1 advisory. Kyle Zeng discovered that the sysctl implementation in the Linux kernel contained a stack-based buffer overflow. A local attacker could use this to cause...

Ubuntu 20.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5875-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5875-1 advisory. It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote...

SUSE CVE-2014-3144

The 1 BPFSANCNLATTR and 2 BPFSANCNLATTRNEST extension implementations in the skrunfilter function in net/core/filter.c in the Linux kernel through 3.14.3 do not check whether a certain length value is sufficiently large, which allows local users to cause a denial of service integer underflow and...

SUSE CVE-2014-3145

The BPFSANCNLATTRNEST extension implementation in the skrunfilter function in net/core/filter.c in the Linux kernel through 3.14.3 uses the reverse order in a certain subtraction, which allows local users to cause a denial of service over-read and system crash via crafted BPF instructions. NOTE:...

SUSE CVE-2015-4700

The bpfintjitcompile function in arch/x86/net/bpfjitcomp.c in the Linux kernel before 4.0.6 allows local users to cause a denial of service system crash by creating a packet filter and then loading crafted BPF instructions that trigger late convergence by the JIT compiler...

SUSE CVE-2016-2383

The adjustbranches function in kernel/bpf/verifier.c in the Linux kernel before 4.5 does not consider the delta in the backward-jump case, which allows local users to obtain sensitive information from kernel memory by creating a packet filter and then loading crafted BPF instructions...

SUSE CVE-2016-4557

The replacemapfdwithmapptr function in kernel/bpf/verifier.c in the Linux kernel before 4.5.5 does not properly maintain an fd data structure, which allows local users to gain privileges or cause a denial of service use-after-free via crafted BPF instructions that reference an incorrect file...

SUSE CVE-2016-4794

Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service BUG or possibly have unspecified other impact via crafted use of the mmap and bpf system calls...

SUSE CVE-2017-16996

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service memory corruption or possibly have unspecified other impact by leveraging register truncation mishandling...

SUSE CVE-2017-17853

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service memory corruption or possibly have unspecified other impact by leveraging incorrect BPFRSH signed bounds calculations...

SUSE CVE-2017-17854

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service integer overflow and memory corruption or possibly have unspecified other impact by leveraging unrestricted integer values for pointer arithmetic...

SUSE CVE-2017-17856

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service memory corruption or possibly have unspecified other impact by leveraging the lack of stack-pointer alignment enforcement...

SUSE CVE-2017-17857

The checkstackboundary function in kernel/bpf/verifier.c in the Linux kernel through 4.14.8 allows local users to cause a denial of service memory corruption or possibly have unspecified other impact by leveraging mishandling of invalid variable stack read operations...

SUSE CVE-2017-17862

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service...

SUSE CVE-2017-17863

kernel/bpf/verifier.c in the Linux kernel 4.9.x through 4.9.71 does not check the relationship between pointer values and the BPF stack, which allows local users to cause a denial of service integer overflow or invalid memory access or possibly have unspecified other impact...

SUSE CVE-2018-18445

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjustscalarminmaxvals in kernel/bpf/verifier.c mishandles 32-bit right shifts...

SUSE CVE-2018-25020

The BPF subsystem in the Linux kernel before 4.17 mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions, leading to an overflow. This affects kernel/bpf/core.c and net/core/filter.c...