CVE-2026-80927
timekeeping: Check the return value of tk_get_aux_ts64 in __do_adjtimex()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: timekeeping: Check the return value of tk_get_aux_ts64 in __do_adjtimex() If the auxiliary clock is disabled during tk_get_aux_ts64() but is enabled before tks->clock_valid is checked, then uninitialized stackdata will be used in the calculations and indirectly leaked to userspace. The same race window also exists after this change and also for the core timekeeper. But in these cases the only effect would be incorrect adjustments and this is userspace's responsibility to avoid this.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
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Affected Versions
Linux / Linux
4eca49d0b621b314ac7c80f363932ec6f6c8abc8 < fecf1e37775269ad38c172b468ad4ecc3968aa63 4eca49d0b621b314ac7c80f363932ec6f6c8abc8 < bc59dac50cb45a725f7a50760c7cc72a0964f722 4eca49d0b621b314ac7c80f363932ec6f6c8abc8 < 4b61084b11bcecce86d03804ff30f8d7b465593c
Linux / Linux
6.17