CVE-2021-4001: Time-of-check Time-of-use (TOCTOU) Race Condition

A race condition was found in the Linux kernel's ebpf verifier between bpfmapupdateelem and bpfmapfreeze due to a missing lock in kernel/bpf/syscall.c. In this flaw, a local user with a special privilege capsysadmin or capbpf can modify the frozen mapped address space. This flaw affects kernel...

CVE-2022-23222: NULL Pointer Dereference

kernel/bpf/verifier.c in the Linux kernel through 5.15.14 allows local users to gain privileges because of the availability of pointer arithmetic via certain ORNULL pointer types...

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...

UBUNTU-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...

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...

CVE-2018-25020: Buffer Copy without Checking Size of Input

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...

WS-2021-0572

Linux/Kernel is vulnerable to kernel address leakage in kernel/bpf/verifier.c...

PT-2021-4242

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 5.13.8 Description The issue is related to an integer overflow and out-of-bounds write in the kernel/bpf/hashtab.c component of the Linux kernel. This occurs when many elements are placed in a single bucket...

CVE-2021-33624: Access of Resource Using Incompatible Type

In kernel/bpf/verifier.c in the Linux kernel before 5.12.13, a branch can be mispredicted e.g., because of type confusion and consequently an unprivileged BPF program can read arbitrary memory locations via a side-channel attack, aka CID-9183671af6db...

SUSE SLES15 Security Update : kernel (Live Patch 13 for SLE 15 SP2) (SUSE-SU-2021:2027-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2027-1 advisory. This update for the Linux Kernel 5.3.18-2464 fixes several issues. The following issues were fixed: - CVE-2021-33200: Enforcing incorrect limit...

CVE-2021-33200: Out-of-bounds Write

kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corne...

CVE-2021-31829: Incorrect Authorization

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...

CVE-2021-29155: Out-of-bounds Read

An issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences ...

CVE-2021-29155

An issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences ...

PT-2021-2801

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 5.11.x Description An issue in the Linux kernel allows for undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks. This can defeat Spectre mitigations and obtain sensitive...

CVE-2021-29649

An issue was discovered in the Linux kernel before 5.11.11. The user mode driver UMD has a copyprocess memory leak, related to a lack of cleanup steps in kernel/usermodedriver.c and kernel/bpf/preload/bpfpreloadkern.c, aka CID-f60a85cad677...

CVE-2021-29649

An issue was discovered in the Linux kernel before 5.11.11. The user mode driver UMD has a copyprocess memory leak, related to a lack of cleanup steps in kernel/usermodedriver.c and kernel/bpf/preload/bpfpreloadkern.c, aka CID-f60a85cad677...

CVE-2021-29649: Missing Release of Memory after Effective Lifetime

An issue was discovered in the Linux kernel before 5.11.11. The user mode driver UMD has a copyprocess memory leak, related to a lack of cleanup steps in kernel/usermodedriver.c and kernel/bpf/preload/bpfpreloadkern.c, aka CID-f60a85cad677...

CVE-2020-27171

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error with a resultant integer underflow affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information...

CVE-2020-27170

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-f232326f6966. This...