MGASA-2021-0490 - Updated kernel-linus packages fix security vulnerabilities

Publication date: 25 Oct 2021
URL: https://advisories.mageia.org/MGASA-2021-0490.html
Type: security
Affected Mageia releases: 8
CVE: CVE-2021-3744,
     CVE-2021-3764,
     CVE-2021-20321,
     CVE-2021-41864

This kernel-linus update is based on upstream 5.10.75 and fixes atleast the
following security issues:

A memory leak in the ccp_run_aes_gcm_cmd() function in drivers/crypto/
ccp/ccp-ops.c in the Linux kernel allows malicious users to cause a
denial of service (memory consumption) (CVE-2021-3744).

A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd()
function that allows an malicious user to cause a denial of service
(CVE-2021-3764).

A race condition accessing file object in the Linux kernel OverlayFS
subsystem was found in the way users do rename in specific way with
OverlayFS. A local user could use this flaw to crash the system
(CVE-2021-20321).

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel
through 5.14.9 allows unprivileged users to trigger an eBPF multiplication
integer overflow with a resultant out-of-bounds write (CVE-2021-41864).

For other upstream fixes, see the referenced changelogs. 

References:
- https://bugs.mageia.org/show_bug.cgi?id=29572
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.71
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.72
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.73
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.74
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.75
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3744
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3764
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20321
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41864

SRPMS:
- 8/core/kernel-linus-5.10.75-1.mga8