{"id":"CVE-2026-68334","summary":"rxrpc: fix io_thread race in rxrpc_wake_up_io_thread()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: fix io_thread race in rxrpc_wake_up_io_thread()\n\nrxrpc_wake_up_io_thread() checks local-\u003eio_thread before waking it, but\nthen reloads the pointer for wake_up_process().\n\nlocal-\u003eio_thread is cleared with WRITE_ONCE() when the I/O thread exits, so\nthe second load can see NULL even if the first load did not.\n\nTake a READ_ONCE() snapshot and use it for both the NULL check and the\nwake_up_process() call, as rxrpc_encap_rcv() already does.","modified":"2026-08-18T03:30:50.571511374Z","published":"2026-08-10T12:03:10.538Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68334.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/092b42cf3f6013eec43607ecbcad674723649514"},{"type":"WEB","url":"https://git.kernel.org/stable/c/745fb794c3e933c023af9dbb5876a5e16ad2dc71"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c9165e199f56997f2f2deb5d3ec2dfab98dfa288"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68334.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68334"},{"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":"5800b1cf3fd8ccab752a101865be1e76dac33142"},{"fixed":"c9165e199f56997f2f2deb5d3ec2dfab98dfa288"},{"fixed":"092b42cf3f6013eec43607ecbcad674723649514"},{"fixed":"745fb794c3e933c023af9dbb5876a5e16ad2dc71"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68334.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.18.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68334.json"}}],"schema_version":"1.9.0"}