{"id":"CVE-2026-23118","title":"rxrpc: Fix data-race warning and potential load/store tearing","summary":"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…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < 49b8ef1abfe7713e15d9128006cb76e413b12b57","Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < a426f29ac3fa3465093567ab763ada46762fb57c","Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < c08cf314191cd0f8699089715efb9eff030f0086","Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < f8cf1368e0a5491b27189a695c36f64e48f3d19d","Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < 5d5fe8bcd331f1e34e0943ec7c18432edfcf0e8b","Linux 4.17"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T21:19:55.807640Z"},"published":"2026-02-14","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:23:17.922Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23118","references":[{"url":"https://git.kernel.org/stable/c/49b8ef1abfe7713e15d9128006cb76e413b12b57"},{"url":"https://git.kernel.org/stable/c/a426f29ac3fa3465093567ab763ada46762fb57c"},{"url":"https://git.kernel.org/stable/c/c08cf314191cd0f8699089715efb9eff030f0086"},{"url":"https://git.kernel.org/stable/c/f8cf1368e0a5491b27189a695c36f64e48f3d19d"},{"url":"https://git.kernel.org/stable/c/5d5fe8bcd331f1e34e0943ec7c18432edfcf0e8b"}],"tags":["cve.org"],"epss":0.00098,"epssPercentile":0.00773,"ingestedAt":"2026-11-05T15:02:32.186Z","slug":"CVE-2026-23118","body":"## Overview\n\nIn 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 ->last_tx_at in:\n\n        conn->peer->last_tx_at = ktime_get_seconds();\n\nand:\n\n        keepalive_at = peer->last_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 ->last_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 ->last_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.\n\n## Affected\n\n- `Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < 49b8ef1abfe7713e15d9128006cb76e413b12b57`\n- `Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < a426f29ac3fa3465093567ab763ada46762fb57c`\n- `Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < c08cf314191cd0f8699089715efb9eff030f0086`\n- `Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < f8cf1368e0a5491b27189a695c36f64e48f3d19d`\n- `Linux >= ace45bec6d77bc061c3c3d8ad99e298ea9800c2b < 5d5fe8bcd331f1e34e0943ec7c18432edfcf0e8b`\n- `Linux 4.17`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}