{"id":"CVE-2026-68440","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-68440","summary":"net: txgbe: fix heap overflow when reading module EEPROM","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: txgbe: fix heap overflow when reading module EEPROM\n\ntxgbe_read_eeprom_hostif() always copies round_up(length, 4) bytes\ninto the caller buffer, which ethtool allocates with exactly 'length'\nbytes. A non-4-aligned length therefore causes an out-of-bounds write.\nCopy only the remaining bytes on the final dword instead.","published":"2026-08-12T00:07:29.605Z","modified":"2026-08-14T04:04:01.873887434Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"7.1.6"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6a905a71fd43ce8b45f05044b11491337f232c9d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/febcced6958158e7e90a55a8567b3f5c3639c0b9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68440.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68440"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-14T04:04:01.873887434Z"}}