CVE-2021-46974 bpf: Fix masking negation logic upon negative dst register

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix masking negation logic upon negative dst register The negation logic for the case where the offreg is sitting in the dst register is not correct given then we cannot just invert the add to a sub or vice versa. As a fix,...

CVE-2021-46974 bpf: Fix masking negation logic upon negative dst register

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix masking negation logic upon negative dst register The negation logic for the case where the offreg is sitting in the dst register is not correct given then we cannot just invert the add to a sub or vice versa. As a fix,...

CVE-2021-46974

CVE-2021-46974 — Linux kernel BPF masking negation bug: when the off_reg is in the destination, negation could flip an add to a sub incorrectly. The fix performs a final bitwise AND into AX from off_reg unconditionally, then moves from src to dst and uses AX as the source for the original pointer...

CVE-2021-46908

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypassspecv1 flag instead of...

CVE-2021-46908

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypassspecv1 flag instead of...

CVE-2021-46908

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypassspecv1 flag instead of...

Spoofing

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypassspecv1 flag instead of...

UBUNTU-CVE-2021-46908

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypassspecv1 flag instead of...

CVE-2021-46908 bpf: Use correct permission flag for mixed signed bounds arithmetic

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypassspecv1 flag instead of...

CVE-2021-46908 bpf: Use correct permission flag for mixed signed bounds arithmetic

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypassspecv1 flag instead of...

CVE-2021-46908

CVE-2021-46908 is a Linux kernel issue where the bpf permission flag for mixed signed bounds arithmetic was incorrect, enabling a vulnerability path that was mitigated by bypass_spec_v1 handling instead of allow_ptr_leaks. Connected advisories (e.g., SUSE-SU-2024:1465-1 / SUSE-SU-2024:1489-1) des...

CVE-2021-46908

In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypassspecv1 flag instead of...

SUSE CVE-2024-26589

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject variable offset alu on PTRTOFLOWKEYS For PTRTOFLOWKEYS, checkflowkeysaccess only uses fixed off for validation. However, variable offset ptr alu is not prohibited for this ptr kind. So the variable offset is not...

SUSE CVE-2024-26591

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix re-attachment branch in bpftracingprogattach The following case can cause a crash due to missing attachbtf: 1 load rawtp program 2 load fentry program with rawtp as targetfd 3 create tracing link for fentry program with...

CVE-2023-52462

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slottypeBPFREGSIZE - 1 plus potentially few more below it, depending on actual spill size. So to check i...

DEBIAN-CVE-2023-52462

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slottypeBPFREGSIZE - 1 plus potentially few more below it, depending on actual spill size. So to check i...

CVE-2023-52462

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slottypeBPFREGSIZE - 1 plus potentially few more below it, depending on actual spill size. So to check i...

Spoofing

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slottypeBPFREGSIZE - 1 plus potentially few more below it, depending on actual spill size. So to check i...

UBUNTU-CVE-2023-52462

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slottypeBPFREGSIZE - 1 plus potentially few more below it, depending on actual spill size. So to check i...

CVE-2023-52462 bpf: fix check for attempt to corrupt spilled pointer

In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slottypeBPFREGSIZE - 1 plus potentially few more below it, depending on actual spill size. So to check i...