CVE-2026-64163
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
test_kprobes: clear kprobes between test runs
Running the kprobes sanity tests twice makes all tests fail and eventually crashes the kernel.
The testsuite defines several kprobes and kretprobes as static variables that are preserved across test runs.
After register_kprobe and unregister_kprobe, a kprobe contains some leftover data that must be cleared before the kprobe can be registered again. The tests are setting symbol_name to define the probe location. Address and flags must be cleared.
The existing code clears some of the probes between subsequent tests, but not between two test runs. The leftover data from a previous test run makes the registrations fail in the next run.
Leer descripción completaMostrar menos
Move the cleanups for all kprobes into kprobes_test_init, this function is called before each single test (including the first test of a test run).
Detalles técnicos trazas, registros y código del informe original
[root@martin-riscv-1 ~]# echo 1 > /sys/kernel/debug/kunit/kprobes_test/run
...
# Totals: pass:5 fail:0 skip:0 total:5
ok 1 kprobes_test
[root@martin-riscv-1 ~]# echo 1 > /sys/kernel/debug/kunit/kprobes_test/run
...
# test_kprobe: EXPECTATION FAILED at lib/tests/test_kprobes.c:64
Expected 0 == register_kprobe(&kp), but
register_kprobe(&kp) == -22 (0xffffffffffffffea)
...
Unable to handle kernel paging request ...CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/08d355936fcf70c81c94f9fe7310450b65c53399
- https://git.kernel.org/stable/c/1c24cf1fd67f6702c719ab73499392cb7af956ae
- https://git.kernel.org/stable/c/96515819d79f356f40da5540968d838ea570fab9
- https://git.kernel.org/stable/c/accc0004c501a9918313142282b094d408af06fb
- https://git.kernel.org/stable/c/ef5581bb30efb939cc2bf093475c6cc85258e5cd
JSON original (NVD)
Mostrar
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"integrityImpact": "NONE",
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"descriptions": [
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"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)."
}
],
"lastModified": "2026-08-13T15:32:53.703",
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