{"id":"CVE-2026-64163","state":"PUBLISHED","title":"test_kprobes: clear kprobes between test runs","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntest_kprobes: clear kprobes between test runs\n\nRunning the kprobes sanity tests twice makes all tests fail and\neventually crashes the kernel.\n\n[root@martin-riscv-1 ~]# echo 1 > /sys/kernel/debug/kunit/kprobes_test/run\n...\n   # Totals: pass:5 fail:0 skip:0 total:5\n   ok 1 kprobes_test\n[root@martin-riscv-1 ~]# echo 1 > /sys/kernel/debug/kunit/kprobes_test/run\n...\n  # test_kprobe: EXPECTATION FAILED at lib/tests/test_kprobes.c:64\n  Expected 0 == register_kprobe(&kp), but\n      register_kprobe(&kp) == -22 (0xffffffffffffffea)\n...\n  Unable to handle kernel paging request ...\n\nThe testsuite defines several kprobes and kretprobes as static variables\nthat are preserved across test runs.\n\nAfter register_kprobe and unregister_kprobe, a kprobe contains some\nleftover data that must be cleared before the kprobe can be registered\nagain. The tests are setting symbol_name to define the probe location.\nAddress and flags must be cleared.\n\nThe existing code clears some of the probes between subsequent tests, but\nnot between two test runs. The leftover data from a previous test run\nmakes the registrations fail in the next run.\n\nMove the cleanups for all kprobes into kprobes_test_init, this function\nis called before each single test (including the first test of a test\nrun).","publishedAt":"2026-07-19T15:40:49.172Z","updatedAt":"2026-10-30T12:27:39.441Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"29ec976006dfab171a7e007976e38af56ce286e4","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"08d355936fcf70c81c94f9fe7310450b65c53399","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"accc0004c501a9918313142282b094d408af06fb","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"1c24cf1fd67f6702c719ab73499392cb7af956ae","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"96515819d79f356f40da5540968d838ea570fab9","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"ef5581bb30efb939cc2bf093475c6cc85258e5cd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["lib/tests/test_kprobes.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["lib/tests/test_kprobes.c"]}],"references":["https://git.kernel.org/stable/c/29ec976006dfab171a7e007976e38af56ce286e4","https://git.kernel.org/stable/c/08d355936fcf70c81c94f9fe7310450b65c53399","https://git.kernel.org/stable/c/accc0004c501a9918313142282b094d408af06fb","https://git.kernel.org/stable/c/1c24cf1fd67f6702c719ab73499392cb7af956ae","https://git.kernel.org/stable/c/96515819d79f356f40da5540968d838ea570fab9","https://git.kernel.org/stable/c/ef5581bb30efb939cc2bf093475c6cc85258e5cd"],"weaknesses":[],"ingestedAt":"2026-10-30T12:46:06.359Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64163.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64163","state":"PUBLISHED","datePublished":"2026-07-19T15:40:49.172Z","dateUpdated":"2026-10-30T12:27:39.441Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.038Z"},"containers":{"cna":{"title":"test_kprobes: clear kprobes between test runs","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntest_kprobes: clear kprobes between test runs\n\nRunning the kprobes sanity tests twice makes all tests fail and\neventually crashes the kernel.\n\n[root@martin-riscv-1 ~]# echo 1 > /sys/kernel/debug/kunit/kprobes_test/run\n...\n   # Totals: pass:5 fail:0 skip:0 total:5\n   ok 1 kprobes_test\n[root@martin-riscv-1 ~]# echo 1 > /sys/kernel/debug/kunit/kprobes_test/run\n...\n  # test_kprobe: EXPECTATION FAILED at lib/tests/test_kprobes.c:64\n  Expected 0 == register_kprobe(&kp), but\n      register_kprobe(&kp) == -22 (0xffffffffffffffea)\n...\n  Unable to handle kernel paging request ...\n\nThe testsuite defines several kprobes and kretprobes as static variables\nthat are preserved across test runs.\n\nAfter register_kprobe and unregister_kprobe, a kprobe contains some\nleftover data that must be cleared before the kprobe can be registered\nagain. The tests are setting symbol_name to define the probe location.\nAddress and flags must be cleared.\n\nThe existing code clears some of the probes between subsequent tests, but\nnot between two test runs. The leftover data from a previous test run\nmakes the registrations fail in the next run.\n\nMove the cleanups for all kprobes into kprobes_test_init, this function\nis called before each single test (including the first test of a test\nrun)."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"29ec976006dfab171a7e007976e38af56ce286e4","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"08d355936fcf70c81c94f9fe7310450b65c53399","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"accc0004c501a9918313142282b094d408af06fb","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"1c24cf1fd67f6702c719ab73499392cb7af956ae","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"96515819d79f356f40da5540968d838ea570fab9","versionType":"git"},{"version":"e44e81c5b90f698025eadceb7eef8661eda117d5","status":"affected","lessThan":"ef5581bb30efb939cc2bf093475c6cc85258e5cd","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["lib/tests/test_kprobes.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.16","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["lib/tests/test_kprobes.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/29ec976006dfab171a7e007976e38af56ce286e4"},{"url":"https://git.kernel.org/stable/c/08d355936fcf70c81c94f9fe7310450b65c53399"},{"url":"https://git.kernel.org/stable/c/accc0004c501a9918313142282b094d408af06fb"},{"url":"https://git.kernel.org/stable/c/1c24cf1fd67f6702c719ab73499392cb7af956ae"},{"url":"https://git.kernel.org/stable/c/96515819d79f356f40da5540968d838ea570fab9"},{"url":"https://git.kernel.org/stable/c/ef5581bb30efb939cc2bf093475c6cc85258e5cd"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:27:39.441Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.6.142"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.12.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}