High 7.8Published Nov 9, 2024

CVE-2024-50262bpf: Fix out-of-bounds write in trie_get_next_key()

Updated under an hour ago (Oct 26, 2026, 7:00 PM ET)

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It affects Linux and 8 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix out-of-bounds write in trie_get_next_key() trie_get_next_key() allocates a node stack with size trie->max_prefixlen, while it writes (trie->max_prefixlen + 1) nodes to the stack when it has full paths from the root to leaves. For example, consider a trie with max_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ... 0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with .prefixlen = 8 make 9 nodes be written on the node stack with size 8.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from b471f2f1de8b816f1e799b80aa92588f3566e4bd before e8494ac079814a53fbc2258d2743e720907488ed; from b471f2f1de8b816f1e799b80aa92588f3566e4bd before 91afbc0eb3c90258ae378ae3c6ead3d2371e926d; from b471f2f1de8b816f1e799b80aa92588f3566e4bd before 590976f921723d53ac199c01d5b7b73a94875e68; from b471f2f1de8b816f1e799b80aa92588f3566e4bd before 86c8ebe02d8806dd8878d0063e8e185622ab6ea6; from b471f2f1de8b816f1e799b80aa92588f3566e4bd before a035df0b98df424559fd383e8e1a268f422ea2ba; from b471f2f1de8b816f1e799b80aa92588f3566e4bd before 90a6e0e1e151ef7a9282e78f54c3091de2dcc99c; from b471f2f1de8b816f1e799b80aa92588f3566e4bd before c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980; from b471f2f1de8b816f1e799b80aa92588f3566e4bd before 13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.2	CISA ADP
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name)	before V3.2	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.2	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.16 before 4.19.323; from 4.20 before 5.4.285; from 5.5 before 5.10.229; from 5.11 before 5.15.171; from 5.16 before 6.1.116; from 6.2 before 6.6.60; from 6.7 before 6.11.7; 6.12; and 4 more ranges	NVD

References

References

https://git.kernel.org/stable/c/e8494ac079814a53fbc2258d2743e720907488ed	patch
https://git.kernel.org/stable/c/91afbc0eb3c90258ae378ae3c6ead3d2371e926d	patch
https://git.kernel.org/stable/c/590976f921723d53ac199c01d5b7b73a94875e68	patch
https://git.kernel.org/stable/c/86c8ebe02d8806dd8878d0063e8e185622ab6ea6	patch
https://git.kernel.org/stable/c/a035df0b98df424559fd383e8e1a268f422ea2ba	patch
https://git.kernel.org/stable/c/90a6e0e1e151ef7a9282e78f54c3091de2dcc99c	patch
https://git.kernel.org/stable/c/c4b4f9a9ab82238cb158fa4fe61a8c0ae21a4980	patch
https://git.kernel.org/stable/c/13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21	patch
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.