In the Linux kernel, the following vulnerability has been resolved: mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again (struct dirty_throttle_control *)->thresh is an unsigned long, but is passed as the u32 divisor argument to div_u64(). On architectures where unsigned long is 64 bytes, the argument will be implicitly truncated. Use div64_u64() instead of div_u64() so that the value used in the "is this a safe division" check is the same as the divisor. Also, remove redundant cast of the numerator to u64, as that should happen implicitly. This would be difficult to exploit in memcg domain, given the ratio-based arithmetic domain_drity_limits() uses, but is much easier in global writeback domain with a BDI_CAP_STRICTLIMIT-backing device, using e.g. vm.dirty_bytes=(1<<32)*PAGE_SIZE so that dtc->thresh == (1<<32)

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Redhat
  • Enterprise Linux
  • Rhel Eus

No data.

Package CPE Advisory Released Date
Red Hat Enterprise Linux 8
kernel-rt-0:4.18.0-553.22.1.rt7.363.el8_10 cpe:/a:redhat:enterprise_linux:8::nfv RHSA-2024:7001 2024-09-24T00:00:00Z
kernel-0:4.18.0-553.22.1.el8_10 cpe:/o:redhat:enterprise_linux:8 RHSA-2024:7000 2024-09-24T00:00:00Z
Red Hat Enterprise Linux 8.8 Extended Update Support
kernel-0:4.18.0-477.70.1.el8_8 cpe:/o:redhat:rhel_eus:8.8 RHSA-2024:6206 2024-09-03T00:00:00Z
Red Hat Enterprise Linux 9
kernel-0:5.14.0-427.35.1.el9_4 cpe:/a:redhat:enterprise_linux:9 RHSA-2024:6567 2024-09-11T00:00:00Z
kernel-0:5.14.0-427.35.1.el9_4 cpe:/o:redhat:enterprise_linux:9 RHSA-2024:6567 2024-09-11T00:00:00Z
Red Hat Enterprise Linux 9.2 Extended Update Support
kernel-0:5.14.0-284.73.1.el9_2 cpe:/a:redhat:rhel_eus:9.2 RHSA-2024:4533 2024-07-15T00:00:00Z
kernel-rt-0:5.14.0-284.73.1.rt14.358.el9_2 cpe:/a:redhat:rhel_eus:9.2::nfv RHSA-2024:4554 2024-07-15T00:00:00Z
References
Link Providers
https://git.kernel.org/stable/c/000099d71648504fb9c7a4616f92c2b70c3e44ec cve-icon cve-icon
https://git.kernel.org/stable/c/145faa3d03688cbb7bbaaecbd84c01539852942c cve-icon cve-icon
https://git.kernel.org/stable/c/16b1025eaa8fc223ab4273ece20d1c3a4211a95d cve-icon cve-icon
https://git.kernel.org/stable/c/1f12e4b3284d6c863f272eb2de0d4248ed211cf4 cve-icon cve-icon
https://git.kernel.org/stable/c/23a28f5f3f6ca1e4184bd0e9631cd0944cf1c807 cve-icon cve-icon
https://git.kernel.org/stable/c/253f9ea7e8e53a5176bd80ceb174907b10724c1a cve-icon cve-icon
https://git.kernel.org/stable/c/2820005edae13b140f2d54267d1bd6bb23915f59 cve-icon cve-icon
https://git.kernel.org/stable/c/5099871b370335809c0fd1abad74d9c7c205d43f cve-icon cve-icon
https://git.kernel.org/stable/c/65977bed167a92e87085e757fffa5798f7314c9f cve-icon cve-icon
https://git.kernel.org/stable/c/81e7d2530d458548b90a5c5e76b77ad5e5d1c0df cve-icon cve-icon
https://git.kernel.org/stable/c/9319b647902cbd5cc884ac08a8a6d54ce111fc78 cve-icon cve-icon
https://git.kernel.org/stable/c/c593d26fb5d577ef31b6e49a31e08ae3ebc1bc1e cve-icon cve-icon
https://git.kernel.org/stable/c/cbbe17a324437c0ff99881a3ee453da45b228a00 cve-icon cve-icon
https://git.kernel.org/stable/c/ec18ec230301583395576915d274b407743d8f6c cve-icon cve-icon
https://git.kernel.org/stable/c/f6620df12cb6bdcad671d269debbb23573502f9d cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024040344-CVE-2024-26720-06fa@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-26720 cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-26720 cve-icon
History

Tue, 05 Nov 2024 10:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 24 Sep 2024 11:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:8

Tue, 24 Sep 2024 06:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:enterprise_linux:8::nfv

Wed, 11 Sep 2024 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 11 Sep 2024 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat enterprise Linux
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat enterprise Linux

Fri, 06 Sep 2024 14:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhel_eus:8.8
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-04-03T14:55:20.286Z

Updated: 2024-11-05T09:14:29.969Z

Reserved: 2024-02-19T14:20:24.161Z

Link: CVE-2024-26720

cve-icon Vulnrichment

Updated: 2024-08-02T00:14:12.922Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-04-03T15:15:53.993

Modified: 2024-11-21T09:02:54.960

Link: CVE-2024-26720

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-04-03T00:00:00Z

Links: CVE-2024-26720 - Bugzilla