{"id":"CVE-2026-23118","summary":"rxrpc: Fix data-race warning and potential load/store tearing","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix data-race warning and potential load/store tearing\n\nFix the following:\n\n        BUG: KCSAN: data-race in rxrpc_peer_keepalive_worker / rxrpc_send_data_packet\n\nwhich is reporting an issue with the reads and writes to -\u003elast_tx_at in:\n\n        conn-\u003epeer-\u003elast_tx_at = ktime_get_seconds();\n\nand:\n\n        keepalive_at = peer-\u003elast_tx_at + RXRPC_KEEPALIVE_TIME;\n\nThe lockless accesses to these to values aren't actually a problem as the\nread only needs an approximate time of last transmission for the purposes\nof deciding whether or not the transmission of a keepalive packet is\nwarranted yet.\n\nAlso, as -\u003elast_tx_at is a 64-bit value, tearing can occur on a 32-bit\narch.\n\nFix both of these by switching to an unsigned int for -\u003elast_tx_at and only\nstoring the LSW of the time64_t.  It can then be reconstructed at need\nprovided no more than 68 years has elapsed since the last transmission.","modified":"2026-07-11T03:55:28.560239054Z","published":"2026-02-14T15:09:49.845Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23118.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5d5fe8bcd331f1e34e0943ec7c18432edfcf0e8b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a426f29ac3fa3465093567ab763ada46762fb57c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c08cf314191cd0f8699089715efb9eff030f0086"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f8cf1368e0a5491b27189a695c36f64e48f3d19d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23118.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23118"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ace45bec6d77bc061c3c3d8ad99e298ea9800c2b"},{"fixed":"a426f29ac3fa3465093567ab763ada46762fb57c"},{"fixed":"c08cf314191cd0f8699089715efb9eff030f0086"},{"fixed":"f8cf1368e0a5491b27189a695c36f64e48f3d19d"},{"fixed":"5d5fe8bcd331f1e34e0943ec7c18432edfcf0e8b"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23118.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.17.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.69"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23118.json"}}],"schema_version":"1.7.5"}