Threats Tagged 'cve-2026-19938'
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Threats Tagged 'cve-2026-19938'
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0 CVE-2026-19938 is a use-after-free vulnerability in the Zephyr Bluetooth host ATT transmit path. It occurs when the ATT Signed Write Command fails signing due to missing local CSRK, causing a buffer to be freed prematurely and then reused. This leads to host-side memory corruption, including list corruption, double free, and out-of-bounds writes, typically resulting in crashes or assertion failures. The vulnerability requires the deprecated CONFIG_BT_SIGNING option to be enabled and an application issuing signed writes. The flaw affects Zephyr versions from 2.3.0 up to but not including 4.5.0. Join the discussion | CVE Database V5 | 10/12/2026, 23:19:55 UTC Added: 10/12/2026, 23:33:56 UTC |
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