CVSS 5.5 · Medium EPSS 0,57%
Kerentanan pada linux kernel, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.
In the Linux kernel, the following vulnerability has been resolved: rseq: Fix segfault on registration when rseq_cs is non-zero The rseq_cs field is documented as being set to 0 by user-space prior to registration, however this is not currently enforced by the kernel. This can result in a segfault on return to user-space if the value stored in the rseq_cs field doesn't point to a valid struct rseq_cs. The correct solution to this would be to fail the rseq registration when the rseq_cs field is non-zero. However, some older versions of glibc will reuse the rseq area of previous threads without clearing the rseq_cs field and will also terminate the process if the rseq registration fails in a secondary thread. This wasn't caught in testing because in this case the leftover rseq_cs does point to a valid struct rseq_cs. What we can do is clear the rseq_cs field on registration when it's non-zero which will prevent segfaults on registration and won't break the glibc versions that reuse rseq areas on thread creation.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 4.18 hingga sebelum 5.10.240 |
| linux | linux kernel | Versi 5.11 hingga sebelum 5.15.189 |
| linux | linux kernel | Versi 5.16 hingga sebelum 6.1.146 |
| linux | linux kernel | Versi 6.2 hingga sebelum 6.6.99 |
| linux | linux kernel | Versi 6.7 hingga sebelum 6.12.39 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.14.9 |
| debian | debian linux | Versi 11.0 |