CVE-2024-26720

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)

From the Ubuntu Security Team

It was discovered that the memory management subsystem in the Linux kernel did not properly handle dirty throttling logic, leading to divide by zero or buffer overflow vulnerabilities. A local attacker could use this to cause a denial of service (system crash).

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
linux	24.04 LTS noble	Not affected
	23.10 mantic	Fixed 6.5.0-44.44
	22.04 LTS jammy	Fixed 5.15.0-106.116
	20.04 LTS focal	Fixed 5.4.0-181.201
	18.04 LTS bionic	Fixed 4.15.0-226.238 Ubuntu Pro
	16.04 LTS xenial	Fixed 4.4.0-256.290 Ubuntu Pro
	14.04 LTS trusty	Ignored
linux-allwinner-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-aws	24.04 LTS noble	Not affected
	23.10 mantic	Ignored
	22.04 LTS jammy	Fixed 5.15.0-1061.67
	20.04 LTS focal	Fixed 5.4.0-1124.134
	18.04 LTS bionic	Fixed 4.15.0-1169.182 Ubuntu Pro
	16.04 LTS xenial	Fixed 4.4.0-1171.186 Ubuntu Pro
	14.04 LTS trusty	Fixed 4.4.0-1133.139 Ubuntu Pro
linux-aws-5.0	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-aws-5.11	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-aws-5.13	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-aws-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1061.67~20.04.1
linux-aws-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-aws-5.3	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-aws-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 5.4.0-1124.134~18.04.1 Ubuntu Pro
linux-aws-5.8	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-aws-6.2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-aws-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-1023.23~22.04.1
	20.04 LTS focal	Not in release
linux-aws-fips	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-aws-hwe	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	16.04 LTS xenial	Fixed 4.15.0-1169.182~16.04.1 Ubuntu Pro
linux-azure	24.04 LTS noble	Not affected
	23.10 mantic	Ignored
	22.04 LTS jammy	Fixed 5.15.0-1063.72
	20.04 LTS focal	Fixed 5.4.0-1129.136
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Fixed 4.15.0-1178.193~16.04.1 Ubuntu Pro
	14.04 LTS trusty	Fixed 4.15.0-1178.193~14.04.1 Ubuntu Pro
linux-azure-4.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 4.15.0-1178.193 Ubuntu Pro
linux-azure-5.11	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-azure-5.13	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-azure-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1063.72~20.04.1
linux-azure-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-azure-5.3	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-azure-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 5.4.0-1129.136~18.04.1 Ubuntu Pro
linux-azure-5.8	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-azure-6.2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-azure-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-1024.25~22.04.1
	20.04 LTS focal	Not in release
linux-azure-edge	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-azure-fde	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 5.15.0-1063.72.1
	20.04 LTS focal	Ignored
linux-azure-fde-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1063.72~20.04.1.1
linux-azure-fde-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-azure-fde-6.2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-azure-fips	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-bluefield	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.4.0-1084.91
linux-fips	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
linux-gcp	24.04 LTS noble	Not affected
	23.10 mantic	Fixed 6.5.0-1024.26
	22.04 LTS jammy	Fixed 5.15.0-1059.67
	20.04 LTS focal	Fixed 5.4.0-1128.137
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Fixed 4.15.0-1163.180~16.04.1 Ubuntu Pro
linux-gcp-4.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 4.15.0-1163.180 Ubuntu Pro
linux-gcp-5.11	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-gcp-5.13	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-gcp-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1059.67~20.04.1
linux-gcp-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-gcp-5.3	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-gcp-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 5.4.0-1128.137~18.04.1 Ubuntu Pro
linux-gcp-5.8	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-gcp-6.2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-gcp-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-1024.26~22.04.1
	20.04 LTS focal	Not in release
linux-gcp-fips	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-gke	24.04 LTS noble	Not affected
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 5.15.0-1058.63
	20.04 LTS focal	Ignored
linux-gke-4.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-gke-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-gke-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-gkeop	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 5.15.0-1044.51
	20.04 LTS focal	Fixed 5.4.0-1091.95
linux-gkeop-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1044.51~20.04.1
linux-gkeop-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-hwe	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Fixed 4.15.0-226.238~16.04.1 Ubuntu Pro
linux-hwe-5.11	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-hwe-5.13	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-hwe-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-106.116~20.04.1
linux-hwe-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-hwe-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 5.4.0-181.201~18.04.1 Ubuntu Pro
linux-hwe-5.8	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-hwe-6.2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-hwe-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-44.44~22.04.1
	20.04 LTS focal	Not in release
linux-hwe-6.8	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-hwe-edge	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
	16.04 LTS xenial	Ignored
linux-ibm	24.04 LTS noble	Not affected
	23.10 mantic	Ignored
	22.04 LTS jammy	Fixed 5.15.0-1054.57
	20.04 LTS focal	Fixed 5.4.0-1071.76
linux-ibm-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1054.57~20.04.1
linux-ibm-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 5.4.0-1071.76~18.04.1 Ubuntu Pro
linux-intel	24.04 LTS noble	Not affected
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-intel-5.13	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-intel-iot-realtime	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-intel-iotg	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 5.15.0-1057.63
	20.04 LTS focal	Not in release
linux-intel-iotg-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1058.64~20.04.1
linux-iot	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.4.0-1036.37
linux-kvm	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 5.15.0-1058.63
	20.04 LTS focal	Fixed 5.4.0-1112.119
	18.04 LTS bionic	Fixed 4.15.0-1153.158 Ubuntu Pro
	16.04 LTS xenial	Fixed 4.4.0-1134.144 Ubuntu Pro
linux-laptop	24.04 LTS noble	Not in release
	23.10 mantic	Ignored
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
linux-lowlatency	24.04 LTS noble	Not affected
	23.10 mantic	Ignored
	22.04 LTS jammy	Fixed 5.15.0-106.116
	20.04 LTS focal	Not in release
linux-lowlatency-hwe-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-106.116~20.04.1
linux-lowlatency-hwe-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-lowlatency-hwe-6.2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-lowlatency-hwe-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-44.44.1~22.04.1
	20.04 LTS focal	Not in release
linux-lowlatency-hwe-6.8	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-lts-xenial	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	14.04 LTS trusty	Fixed 4.4.0-256.290~14.04.1 Ubuntu Pro
linux-nvidia	24.04 LTS noble	Not affected
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 5.15.0-1054.55
	20.04 LTS focal	Not in release
linux-nvidia-6.2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-nvidia-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-1023.24
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-nvidia-6.8	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-nvidia-lowlatency	24.04 LTS noble	Not affected
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-oem	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-oem-5.10	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-oem-5.13	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-oem-5.14	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-oem-5.17	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-oem-5.6	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-oem-6.0	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-oem-6.1	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-oem-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-1027.28
	20.04 LTS focal	Not in release
linux-oem-6.8	24.04 LTS noble	Not affected
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-oracle	24.04 LTS noble	Not affected
	23.10 mantic	Ignored
	22.04 LTS jammy	Fixed 5.15.0-1059.65
	20.04 LTS focal	Fixed 5.4.0-1123.132
	18.04 LTS bionic	Fixed 4.15.0-1132.143 Ubuntu Pro
	16.04 LTS xenial	Fixed 4.15.0-1132.143~16.04.1 Ubuntu Pro
linux-oracle-5.0	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-oracle-5.11	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-oracle-5.13	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-oracle-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1059.65~20.04.1
linux-oracle-5.3	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Ignored
linux-oracle-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 5.4.0-1123.132~18.04.1 Ubuntu Pro
linux-oracle-5.8	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-oracle-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-1026.26~22.04.1
	20.04 LTS focal	Not in release
linux-raspi	24.04 LTS noble	Not affected
	23.10 mantic	Fixed 6.5.0-1020.23
	22.04 LTS jammy	Fixed 5.15.0-1054.57
	20.04 LTS focal	Fixed 5.4.0-1108.120
linux-raspi-5.4	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Fixed 5.4.0-1108.120~18.04.1 Ubuntu Pro
linux-raspi-realtime	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-raspi2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-realtime	24.04 LTS noble	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-riscv	24.04 LTS noble	Not affected
	23.10 mantic	Ignored
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Ignored
linux-riscv-5.11	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-riscv-5.15	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Fixed 5.15.0-1057.61~20.04.1
linux-riscv-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-riscv-5.8	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Ignored
linux-riscv-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-riscv-6.8	24.04 LTS noble	Not in release
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release
linux-starfive	24.04 LTS noble	Not in release
	23.10 mantic	Ignored
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
linux-starfive-5.19	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-starfive-6.2	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Not in release
linux-starfive-6.5	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 6.5.0-1017.18~22.04.1
	20.04 LTS focal	Not in release
linux-xilinx-zynqmp	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Fixed 5.15.0-1030.34
	20.04 LTS focal	Fixed 5.4.0-1043.47

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Notes

cache-use-only

9319b647902c ("mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again") is a flawed fix and is therefore reverted by 30139c702048 ("Revert "mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again""). In the mailing list thread, a more comprehensive approach to the problem is proposed so we should use the latest one, 68ed2a394a01 ("mm: avoid overflows in dirty throttling logic"), instead.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
linux	Introduced by f678959, fixed by 68ed2a3

References

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