MGASA-2021-0460 - Updated kernel-linus packages fix security vulnerabilities

Publication date: 04 Oct 2021
URL: https://advisories.mageia.org/MGASA-2021-0460.html
Type: security
Affected Mageia releases: 8
CVE: CVE-2020-16119,
     CVE-2021-40490,
     CVE-2021-41073

This kernel-linus update is based on upstream 5.10.70 and fixes atleast
the following security issues:

Use-after-free vulnerability in the Linux kernel exploitable by a local
attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid
object as a listener after being released (CVE-2020-16119).

A race condition was discovered in ext4_write_inline_data_end in
fs/ext4/inline.c in the ext4 subsystem in the Linux kernel through 5.13.13
(CVE-2021-40490).

oop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows
local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger
a free of a kernel buffer, as demonstrated by using /proc//maps for
exploitation (CVE-2021-41073).

For other upstream fixes, see the referenced changelogs.

References:
- https://bugs.mageia.org/show_bug.cgi?id=29508
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.63
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.64
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.65
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.66
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.67
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.68
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.69
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.70
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16119
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40490
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41073

SRPMS:
- 8/core/kernel-linus-5.10.70-1.mga8