Vulnerability-Lookup

alsa-2021:2570

Vulnerability from osv_almalinux

Published

2021-06-29 13:42

Modified

2021-08-11 08:54

Summary

Important: kernel security and bug fix update

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)
kernel: security bypass in certs/blacklist.c and certs/system_keyring.c (CVE-2020-26541)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

[ESXi][AlmaLinux-8] VMXNET3 v4 causes invalid checksums of inner packets of VXLAN tunnel (BZ#1960702)
fnic crash from invalid request pointer (BZ#1961705)
GFS2: Failed FS thaw call makes the entire snapshot failed. (BZ#1961849)
dm writecache: fix performance degradation in ssd mode (BZ#1962241)
Kernel BUG with act_ct and IP fragments (BZ#1963940)
core: backports from upstream (BZ#1963952)
Hibernate resume on AlmaLinux fails in Amazon EC2 C5.18xlarge instance (BZ#1964930)
[SanityOnly] panic caused by i40e_msix_clean_rings (BZ#1964962)
tc reclassification limit is too low for OVN (BZ#1965148)
tc action ct nat src addr does not work while used with ct nat dst addr together (BZ#1965150)
CNB: Rebase/update TC subsystem for AlmaLinux 8.5 (BZ#1965457)
sctp: crash due to use after free of sctp_transport structure (BZ#1965632)

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "kernel-tools-libs-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.18.0-305.7.1.el8_4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)\n\n* kernel: security bypass in certs/blacklist.c and certs/system_keyring.c (CVE-2020-26541)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* [ESXi][AlmaLinux-8] VMXNET3 v4 causes invalid checksums of inner packets of VXLAN tunnel (BZ#1960702)\n\n* fnic crash from invalid request pointer (BZ#1961705)\n\n* GFS2: Failed FS thaw call makes the entire snapshot failed. (BZ#1961849)\n\n* dm writecache: fix performance degradation in ssd mode (BZ#1962241)\n\n* Kernel BUG with act_ct and IP fragments (BZ#1963940)\n\n* core: backports from upstream (BZ#1963952)\n\n* Hibernate resume on AlmaLinux fails in Amazon EC2 C5.18xlarge instance (BZ#1964930)\n\n* [SanityOnly] panic caused by i40e_msix_clean_rings (BZ#1964962)\n\n* tc reclassification limit is too low for OVN (BZ#1965148)\n\n* tc action ct nat src addr does not work while used with ct nat dst addr together (BZ#1965150)\n\n* CNB: Rebase/update TC subsystem for AlmaLinux 8.5 (BZ#1965457)\n\n* sctp: crash due to use after free of sctp_transport structure (BZ#1965632)",
  "id": "ALSA-2021:2570",
  "modified": "2021-08-11T08:54:00Z",
  "published": "2021-06-29T13:42:37Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://vulners.com/cve/CVE-2020-26541"
    },
    {
      "type": "REPORT",
      "url": "https://vulners.com/cve/CVE-2021-33034"
    }
  ],
  "related": [
    "CVE-2021-33034",
    "CVE-2020-26541"
  ],
  "summary": "Important: kernel security and bug fix update"
}

CVE-2021-33034 (GCVE-0-2021-33034)

Vulnerability from cvelistv5 – Published: 2021-05-14 22:57 – Updated: 2024-08-03 23:42

Summary

In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://syzkaller.appspot.com/bug?id=2e1943a94647…	x_refsource_MISC
	https://sites.google.com/view/syzscope/kasan-use-…	x_refsource_MISC
	https://git.kernel.org/pub/scm/linux/kernel/git/t…	x_refsource_MISC
	https://cdn.kernel.org/pub/linux/kernel/v5.x/Chan…	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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CVE-2020-26541 (GCVE-0-2020-26541)

Vulnerability from cvelistv5 – Published: 2020-10-02 18:14 – Updated: 2024-08-04 15:56

Summary

The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AC:L/AV:L/A:H/C:H/I:H/PR:H/S:U/UI:R

CWE

Assigner

mitre

References

URL

Tags

https://lkml.org/lkml/2020/9/15/1871

x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2021:2570

Vulnerability from osv_almalinux

CVE-2021-33034 (GCVE-0-2021-33034)

CVE-2020-26541 (GCVE-0-2020-26541)

Tags

Sightings

Nomenclature