Advisory, added to svn:

type: security
subject: Updated kernel-linus packages fix security vulnerabilities
CVE:
 - CVE-2021-4083
 - CVE-2021-39685
 - CVE-2021-43975
src:
  8:
   core:
     - kernel-linus-5.15.10-1.mga8
description: |
  This kernel-linus update is based on upstream 5.15.10 and fixes atleast the
  following security issues:

  A read-after-free memory flaw was found in the Linux kernel's garbage
  collection for Unix domain socket file handlers in the way users call
  close() and fget() simultaneously and can potentially trigger a race
  condition. This flaw allows a local user to crash the system or escalate
  their privileges on the system (CVE-2021-4083).

  An attacker can access kernel memory bypassing valid buffer boundaries by
  exploiting implementation of control request handlers in the following usb
  gadgets - rndis, hid, uac1, uac1_legacy and uac2. Processing of malicious
  control transfer requests with unexpectedly large wLength lacks assurance
  that this value does not exceed the buffer size. Due to this fact one is
  capable of reading and/or writing (depending on particular case) up to 65k
  of kernel memory. Devices implementing affected usb device gadget classes
  may be affected by buffer overflow vulnerabilities resulting in information
  disclosure, denial of service or execution of arbitrary code in kernel
  context (CVE-2021-39685).

  In the Linux kernel through 5.15.2, hw_atl_utils_fw_rpc_wait in drivers/net/
  ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c allows an attacker (who can
  introduce a crafted device) to trigger an out-of-bounds write via a crafted
  length value (CVE-2021-43975).

  For other upstream fixes, see the referenced changelogs.
references:
 - https://bugs.mageia.org/show_bug.cgi?id=29778
 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.7
 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.8
 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.9
 - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.10

Severity: normal => major
Priority: Normal => High
Keywords: (none) => advisory

An update for this issue has been pushed to the Mageia Updates repository.

https://advisories.mageia.org/MGASA-2021-0575.html

Status: NEW => RESOLVED
Resolution: (none) => FIXED