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 off_reg 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, perform the final bitwise and-op unconditionally into AX from the off_reg, then move the pointer from the src to dst and finally use AX as the source for the original pointer arithmetic operation such that the inversion yields a correct result. The single non-AX mov in between is possible given constant blinding is retaining it as it's not an immediate based operation.
CVSS Details
- CVSS 3.1 Base Score: 7.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade bpftoolUpgrade python-perfUpgrade perf-debuginfoUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernelUpgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-livepatch-4.14.232-176.381Upgrade kernel-debuginfo-common-x86_64 | May 28, 2024 | Feb 27, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Feb 27, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 27, 2024 |
| Suse | — | Upgrade kernel-default-develUpgrade kernel-64kb-develUpgrade kernel-syms-azureUpgrade kernel-64kbUpgrade kernel-azure-develUpgrade kernel-devel-azureUpgrade kernel-symsUpgrade kernel-docsUpgrade kernel-default-manUpgrade kernel-source-azureUpgrade kernel-preemptUpgrade kernel-sourceUpgrade kernel-zfcpdumpUpgrade kernel-default-extraUpgrade kernel-macrosUpgrade reiserfs-kmp-defaultUpgrade kernel-azureUpgrade kernel-defaultUpgrade kernel-obs-buildUpgrade kernel-azure-baseUpgrade kernel-default-baseUpgrade kernel-develUpgrade kernel-preempt-devel | Aug 9, 2024 | Feb 27, 2024 |
| Ubuntu | — | Upgrade linux-fipsUpgrade linux-gcpUpgrade linux-azureUpgrade linux-hweUpgrade linux-gcp-fipsUpgrade linux-aws-fipsUpgrade linux-azure-5.4Upgrade linux-bluefieldUpgrade linux-aws-5.4Upgrade linux-raspiUpgrade linux-raspi-5.4Upgrade linux-hwe-5.4Upgrade linux-gcp-4.15Upgrade linux-azure-4.15Upgrade linux-kvmUpgrade linux-oracleUpgrade linux-oracle-5.4Upgrade linux-awsUpgrade linux-gcp-5.4Upgrade linuxUpgrade linux-aws-hweUpgrade linux-azure-fipsUpgrade linux-gkeop | Nov 19, 2024 | Feb 27, 2024 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub