# CVE-2024-40996: linux: In the Linux kernel, the following vulnerability has been resolved: bpf: Avoid splat in pskb_pull_reason syzkaller... CVE-2024-40996 is fixed in 22 products on 1 platform, first by DEBIAN-CVE-2024-40996, released July 12, 2024. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2024-40996 - Priority: High - CVSS: 7.8 (high) - EPSS: 0.0028 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 12, 2024 ## Description In the Linux kernel, the following vulnerability has been resolved: bpf: Avoid splat in pskb_pull_reason syzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug hint in pskb_may_pull. We'd like to retain this debug check because it might hint at integer overflows and other issues (kernel code should pull headers, not huge value). In bpf case, this splat isn't interesting at all: such (nonsensical) bpf programs are typically generated by a fuzzer anyway. Do what Eric suggested and suppress such warning. For CONFIG_DEBUG_NET=n we don't need the extra check because pskb_may_pull will do the right thing: return an error without the WARN() backtrace. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | bpftool-debuginfo amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-debuginfo amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-devel amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-headers amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-libbpf amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-libbpf-devel amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-libbpf-static amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-livepatch-6.1.96-102.177 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-modules-extra amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-modules-extra-common amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-tools amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-tools-debuginfo amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | kernel-tools-devel amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | linux Debian 12.15 (bookworm) | 6.1.99-1 | [DEBIAN-CVE-2024-40996](https://patchblox.com/security/data/fix/linux/debian-cve-2024-40996.md) | Jul 12, 2024 | | Linux | linux Debian 13.5 (trixie) | 6.9.7-1 | [DEBIAN-CVE-2024-40996](https://patchblox.com/security/data/fix/linux/debian-cve-2024-40996.md) | Jul 12, 2024 | | Linux | linux Debian 14 | 6.9.7-1 | [DEBIAN-CVE-2024-40996](https://patchblox.com/security/data/fix/linux/debian-cve-2024-40996.md) | Jul 12, 2024 | | Linux | perf amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | perf-debuginfo amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | python3-perf amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | | Linux | python3-perf-debuginfo amzn 2023 | 6.1.96-102.177.amzn2023 | [ALAS2023-2025-836](https://patchblox.com/security/data/fix/linux/alas2023-2025-836.md) | Jan 30, 2025 | --- Data as of 2026-11-08T19:12:23Z UTC. 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