ALASKERNEL-5.10-2024-049

References: CVE-2020-27820  CVE-2021-3640  CVE-2021-3772  CVE-2021-4001  CVE-2021-4002  CVE-2021-42327  CVE-2021-47184  CVE-2021-47185  CVE-2021-47186  CVE-2021-47189  CVE-2021-47190  CVE-2021-47191  CVE-2021-47192  CVE-2021-47197  CVE-2021-47201  CVE-2021-47202  CVE-2021-47203  CVE-2021-47217  CVE-2021-47218  CVE-2021-47219  CVE-2021-47459  CVE-2021-47483  CVE-2023-1252 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

2025-01-31: CVE-2021-47483 was added to this advisory.

2025-01-31: CVE-2021-47459 was added to this advisory.

2024-08-27: CVE-2021-47190 was added to this advisory.

2024-08-27: CVE-2021-47184 was added to this advisory.

2024-08-27: CVE-2021-47185 was added to this advisory.

2024-08-27: CVE-2021-47219 was added to this advisory.

2024-08-27: CVE-2021-47192 was added to this advisory.

2024-08-27: CVE-2021-47202 was added to this advisory.

2024-08-27: CVE-2021-47218 was added to this advisory.

2024-08-27: CVE-2021-47191 was added to this advisory.

2024-08-27: CVE-2021-47203 was added to this advisory.

2024-08-27: CVE-2021-47201 was added to this advisory.

2024-08-27: CVE-2021-47189 was added to this advisory.

2024-08-27: CVE-2021-47217 was added to this advisory.

2024-08-27: CVE-2021-47197 was added to this advisory.

2024-08-01: CVE-2021-47186 was added to this advisory.

2024-04-30: CVE-2023-0047 was removed from this advisory (rejected).

2024-02-15: CVE-2021-4002 was added to this advisory.

2024-02-15: CVE-2020-27820 was added to this advisory.

2024-02-15: CVE-2021-3640 was added to this advisory.

2024-02-15: CVE-2021-4001 was added to this advisory.

2024-02-15: CVE-2021-3772 was added to this advisory.

2024-02-15: CVE-2021-42327 was added to this advisory.

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if unbind the driver). (CVE-2020-27820)

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system. (CVE-2021-3640)

A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)

A race condition was found in the Linux kernel's ebpf verifier between bpf_map_update_elem and bpf_map_freeze due to a missing lock in kernel/bpf/syscall.c. In this flaw, a local user with a special privilege (cap_sys_admin or cap_bpf) can modify the frozen mapped address space. (CVE-2021-4001)

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data. (CVE-2021-4002)

A flaw heap buffer overflow in the Linux kernel's AMD Radeon graphics card driver was found in the way user writes some malicious data to the AMD GPU Display Driver Debug Filesystem (to the VGA sub-directory of the /sys/kernel/debug/ directory). A local user could use this flaw to crash the system or escalate their privileges on the system. (CVE-2021-42327)

In the Linux kernel, the following vulnerability has been resolved:

i40e: Fix NULL ptr dereference on VSI filter sync (CVE-2021-47184)

In the Linux kernel, the following vulnerability has been resolved:

tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc (CVE-2021-47185)

In the Linux kernel, the following vulnerability has been resolved:

tipc: check for null after calling kmemdup (CVE-2021-47186)

In the Linux kernel, the following vulnerability has been resolved:

btrfs: fix memory ordering between normal and ordered work functions (CVE-2021-47189)

In the Linux kernel, the following vulnerability has been resolved:

perf bpf: Avoid memory leak from perf_env__insert_btf() (CVE-2021-47190)

In the Linux kernel, the following vulnerability has been resolved:

scsi: scsi_debug: Fix out-of-bound read in resp_readcap16() (CVE-2021-47191)

In the Linux kernel, the following vulnerability has been resolved:

scsi: core: sysfs: Fix hang when device state is set via sysfs (CVE-2021-47192)

In the Linux kernel, the following vulnerability has been resolved:

net/mlx5e: nullify cq->dbg pointer in mlx5_debug_cq_remove() (CVE-2021-47197)

In the Linux kernel, the following vulnerability has been resolved:

iavf: free q_vectors before queues in iavf_disable_vf (CVE-2021-47201)

In the Linux kernel, the following vulnerability has been resolved:

thermal: Fix NULL pointer dereferences in of_thermal_ functions (CVE-2021-47202)

In the Linux kernel, the following vulnerability has been resolved:

scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq() (CVE-2021-47203)

In the Linux kernel, the following vulnerability has been resolved:

x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails (CVE-2021-47217)

In the Linux kernel, the following vulnerability has been resolved:

selinux: fix NULL-pointer dereference when hashtab allocation fails (CVE-2021-47218)

In the Linux kernel, the following vulnerability has been resolved:

scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() (CVE-2021-47219)

In the Linux kernel, the following vulnerability has been resolved:

can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv (CVE-2021-47459)

In the Linux kernel, the following vulnerability has been resolved:

regmap: Fix possible double-free in regcache_rbtree_exit() (CVE-2021-47483)

A use-after-free flaw was found in the Linux kernel's Ext4 File System in how a user triggers several file operations simultaneously with the overlay FS usage. This flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2023-1252)

Issue Correction:
Run yum update kernel to update your system.

New Packages:

aarch64:
    kernel-5.10.82-83.359.amzn2.aarch64
    kernel-headers-5.10.82-83.359.amzn2.aarch64
    kernel-debuginfo-common-aarch64-5.10.82-83.359.amzn2.aarch64
    perf-5.10.82-83.359.amzn2.aarch64
    perf-debuginfo-5.10.82-83.359.amzn2.aarch64
    python-perf-5.10.82-83.359.amzn2.aarch64
    python-perf-debuginfo-5.10.82-83.359.amzn2.aarch64
    kernel-tools-5.10.82-83.359.amzn2.aarch64
    kernel-tools-devel-5.10.82-83.359.amzn2.aarch64
    kernel-tools-debuginfo-5.10.82-83.359.amzn2.aarch64
    bpftool-5.10.82-83.359.amzn2.aarch64
    bpftool-debuginfo-5.10.82-83.359.amzn2.aarch64
    kernel-devel-5.10.82-83.359.amzn2.aarch64
    kernel-debuginfo-5.10.82-83.359.amzn2.aarch64
    kernel-livepatch-5.10.82-83.359-1.0-0.amzn2.aarch64

i686:
    kernel-headers-5.10.82-83.359.amzn2.i686

src:
    kernel-5.10.82-83.359.amzn2.src

x86_64:
    kernel-5.10.82-83.359.amzn2.x86_64
    kernel-headers-5.10.82-83.359.amzn2.x86_64
    kernel-debuginfo-common-x86_64-5.10.82-83.359.amzn2.x86_64
    perf-5.10.82-83.359.amzn2.x86_64
    perf-debuginfo-5.10.82-83.359.amzn2.x86_64
    python-perf-5.10.82-83.359.amzn2.x86_64
    python-perf-debuginfo-5.10.82-83.359.amzn2.x86_64
    kernel-tools-5.10.82-83.359.amzn2.x86_64
    kernel-tools-devel-5.10.82-83.359.amzn2.x86_64
    kernel-tools-debuginfo-5.10.82-83.359.amzn2.x86_64
    bpftool-5.10.82-83.359.amzn2.x86_64
    bpftool-debuginfo-5.10.82-83.359.amzn2.x86_64
    kernel-devel-5.10.82-83.359.amzn2.x86_64
    kernel-debuginfo-5.10.82-83.359.amzn2.x86_64
    kernel-livepatch-5.10.82-83.359-1.0-0.amzn2.x86_64