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Vulnerability IntelligenceRHSA-2021:2730

RHSA-2021:2730

HIGH7.8

Red Hat Security Advisory: kernel security and bug fix update

Published Sep 13, 2024

Modified 1 months ago

Fix available

Affected Packages(20 packages)

bpftool

Red Hat rhel_aus 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel-abi-whitelists

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel-debug

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel-debug-debuginfo

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel-debug-devel

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel-debuginfo

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel-debuginfo-common-x86_64

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel-devel

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

kernel-doc

Red Hat rhel_aus 7.6 serverRed Hat rhel_e4s 7.6 serverRed Hat rhel_tus 7.6 server

Fixed in:

0:3.10.0-957.78.2.el7

References

https://access.redhat.com/errata/RHSA-2021:2730

https://access.redhat.com/security/cve/CVE-2021-33034

https://access.redhat.com/security/cve/CVE-2021-3347

https://access.redhat.com/security/cve/CVE-2021-33909

https://access.redhat.com/security/updates/classification/#important

https://access.redhat.com/security/vulnerabilities/RHSB-2021-006

https://bugzilla.redhat.com/show_bug.cgi?id=1922249

https://bugzilla.redhat.com/show_bug.cgi?id=1961305

https://bugzilla.redhat.com/show_bug.cgi?id=1970273

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5c4c8c9544099bb9043a10a5318130a943e32fc3

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b

https://nvd.nist.gov/vuln/detail/CVE-2021-33034

https://nvd.nist.gov/vuln/detail/CVE-2021-3347

https://nvd.nist.gov/vuln/detail/CVE-2021-33909

https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_2730.json

https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-hci_send_acl

https://syzkaller.appspot.com/bug?id=2e1943a94647f7732dd6fc60368642d6e8dc91b1

https://www.cve.org/CVERecord?id=CVE-2021-33034

https://www.cve.org/CVERecord?id=CVE-2021-3347

https://www.cve.org/CVERecord?id=CVE-2021-33909

https://www.openwall.com/lists/oss-security/2021/07/20/1

https://www.qualys.com/2021/07/20/cve-2021-33909/sequoia-local-privilege-escalation-linux.txt

CVSS Analysis

CVSS v3.1

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

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

Upstream

CVE-2021-33034 CVE-2021-3347 CVE-2021-33909

Ecosystems

Red Hat rhel_aus 7.6 server Red Hat rhel_e4s 7.6 server Red Hat rhel_tus 7.6 server

Timeline

PublishedSep 13, 2024

ModifiedFeb 26, 2026

RHSA-2021:2730 | Mondoo Vulnerability Intelligence