7.8

CVE-2020-12657

An issue was discovered in the Linux kernel before 5.6.5. There is a use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 5.6.5
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.71% 0.487
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 4.6 3.9 6.4
AV:L/AC:L/Au:N/C:P/I:P/A:P
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
https://security.netapp.com/advisory/ntap-20200608-0001/
https://usn.ubuntu.com/4367-1/
https://usn.ubuntu.com/4369-1/
https://usn.ubuntu.com/4368-1/
https://usn.ubuntu.com/4363-1/
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5
Vendor Advisory
Release Notes
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2f95fa5c955d0a9987ffdc3a095e2f4e62c5f2a9
Patch
Vendor Advisory
https://github.com/torvalds/linux/commit/2f95fa5c955d0a9987ffdc3a095e2f4e62c5f2a9
Patch
Third Party Advisory
https://patchwork.kernel.org/patch/11447049/
Patch
Vendor Advisory