High 7.8Published May 30, 2024

CVE-2024-36934bna: ensure the copied buf is NUL terminated

Updated under an hour ago (Oct 27, 2026, 12:10 PM ET)

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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: bna: ensure the copied buf is NUL terminated Currently, we allocate a nbytes-sized kernel buffer and copy nbytes from userspace to that buffer. Later, we use sscanf on this buffer but we don't ensure that the string is terminated inside the buffer, this can lead to OOB read when using sscanf. Fix this issue by using memdup_user_nul instead of memdup_user.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
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 7afc5dbde09104b023ce04465ba71aaba0fc4346 before bd502ba81cd1d515deddad7dbc6b812b14b97147; from 7afc5dbde09104b023ce04465ba71aaba0fc4346 before 80578ec10335bc15ac35fd1703c22aab34e39fdd; 7afc5dbde09104b023ce04465ba71aaba0fc4346 builds before 6f0f19b79c085cc891c418b768f26f7004bd51a4; 7afc5dbde09104b023ce04465ba71aaba0fc4346 builds before 0f560240b4cc25d3de527deb257cdf072c0102a9; 7afc5dbde09104b023ce04465ba71aaba0fc4346 builds before 06cb37e2ba6441888f24566a997481d4197b4e32; from 7afc5dbde09104b023ce04465ba71aaba0fc4346 before e19478763154674c084defc62ae0d64d79657f91; from 7afc5dbde09104b023ce04465ba71aaba0fc4346 before 1518b2b498a0109eb6b15755169d3b6607356b35; from 7afc5dbde09104b023ce04465ba71aaba0fc4346 before 8c34096c7fdf272fd4c0c37fe411cd2e3ed0ee9f	CNA record
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name)	before V3.1	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)	all versions not affected	CISA ADP
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name)	before V3.1	CISA ADP
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 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
linux linux_kernel linux:linux_kernel	from 3.3 before 4.19.314; from 4.20 before 5.4.276; from 5.5 before 5.10.217; from 5.11 before 5.15.159; from 5.16 before 6.1.91; from 6.2 before 6.6.31; from 6.7 before 6.8.10; 6.9; and 5 more ranges	NVD
debian debian_linux debian:debian_linux	10.0	NVD

References

References

https://git.kernel.org/stable/c/bd502ba81cd1d515deddad7dbc6b812b14b97147	patch
https://git.kernel.org/stable/c/80578ec10335bc15ac35fd1703c22aab34e39fdd	patch
https://git.kernel.org/stable/c/6f0f19b79c085cc891c418b768f26f7004bd51a4	patch
https://git.kernel.org/stable/c/0f560240b4cc25d3de527deb257cdf072c0102a9	patch
https://git.kernel.org/stable/c/06cb37e2ba6441888f24566a997481d4197b4e32	patch
https://git.kernel.org/stable/c/e19478763154674c084defc62ae0d64d79657f91	patch
https://git.kernel.org/stable/c/1518b2b498a0109eb6b15755169d3b6607356b35	patch
https://git.kernel.org/stable/c/8c34096c7fdf272fd4c0c37fe411cd2e3ed0ee9f	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html	third-party-advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html	third-party-advisory
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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.