🛡️ CVE-2024-45009 on Ubuntu — linux
Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: only decrement add_addr_accepted for MPJ req Adding the following warning ... WARN_ON_ONCE(msk->pm.add_addr_accepted == 0) ... before decrementing the add_addr_accepted counter helped to find a bug when running the "remove single subflow" subtest from the mptcp_join.sh selftest. Removing a 'subflow' endpoint will first trigger a RM_ADDR, then the subflow closure. Before this patch, and upon the reception of the RM_ADDR, the other peer will then try to decrement this add_addr_accepted. That's not correct because the attached subflows have not been created upon the reception of an ADD_ADDR. A way to solve that is to decrement the counter only if the attached subflow was an MP_JOIN to a remote id that was not 0, and initiated by the host receiving the RM_ADDR.
Distribution advisory
This page covers CVE-2024-45009 as tracked by Ubuntu, for the package linux. The fix is available in version 6.8.0-50.51; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- Attack vector: Network — reachable from anywhere that can route to the service.
- Attack complexity: Low — the attack works reliably, with no preparation.
- Privileges required: None — an unauthenticated stranger can try it.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: None.
- Integrity impact: Low — limited, and the attacker does not choose what is affected.
- Availability impact: High — total loss, or loss the attacker controls.
Affected software
UBUNTU-CVE-2024-45009 is recorded against 117 packages.
- linux (fixed in 6.8.0-50.51)
- linux-allwinner-5.19
- linux-aws (fixed in 6.8.0-1020.22)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.15 (fixed in 5.15.0-1072.78~20.04.1)
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.8
- linux-aws-6.2
- linux-aws-6.5
- linux-aws-6.8 (fixed in 6.8.0-1020.22~22.04.1)
- linux-aws-fips (fixed in 5.15.0-1072.78+fips1)
- linux-azure (fixed in 6.8.0-1020.23)
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1078.87~20.04.1)
- linux-azure-5.19
- linux-azure-5.3
- linux-azure-5.8
- linux-azure-6.2
- linux-azure-6.5
- linux-azure-6.8 (fixed in 6.8.0-1020.23~22.04.1)
Show the remaining 93 packages
- linux-azure-edge
- linux-azure-fde
- linux-azure-fde-5.19
- linux-azure-fde-6.2
- linux-azure-fips (fixed in 5.15.0-1075.84+fips1)
- linux-bluefield
- linux-fips (fixed in 6.8.0-78.78+fips1)
- linux-gcp (fixed in 6.8.0-1019.21)
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.15 (fixed in 5.15.0-1071.79~20.04.1)
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.8
- linux-gcp-6.2
- linux-gcp-6.5
- linux-gcp-6.8 (fixed in 6.8.0-1019.21~22.04.1)
- linux-gcp-fips (fixed in 5.15.0-1071.79+fips1)
- linux-gke (fixed in 6.8.0-1015.19)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 6.8.0-1002.4)
- linux-gkeop-5.15 (fixed in 5.15.0-1055.62~20.04.1)
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.15 (fixed in 5.15.0-125.135~20.04.1)
- linux-hwe-5.19
- linux-hwe-5.8
- linux-hwe-6.2
- linux-hwe-6.5
- linux-hwe-6.8 (fixed in 6.8.0-50.51~22.04.1)
- linux-hwe-edge
- linux-ibm (fixed in 6.8.0-1017.17)
- linux-ibm-5.15 (fixed in 5.15.0-1065.68~20.04.1)
- linux-ibm-6.8 (fixed in 6.8.0-1017.17~22.04.1)
- linux-intel-5.13
- linux-intel-iot-realtime (fixed in 5.15.0-1066.68)
- linux-intel-iotg (fixed in 5.15.0-1067.73)
- linux-intel-iotg-5.15 (fixed in 5.15.0-1067.73~20.04.1)
- linux-kvm (fixed in 5.15.0-1069.74)
- linux-lowlatency (fixed in 6.8.0-50.51.1)
- linux-lowlatency-hwe-5.15 (fixed in 5.15.0-125.135~20.04.1)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.2
- linux-lowlatency-hwe-6.5
- linux-lowlatency-hwe-6.8 (fixed in 6.8.0-50.51.1~22.04.1)
- linux-nvidia (fixed in 6.8.0-1019.21)
- linux-nvidia-6.2
- linux-nvidia-6.5
- linux-nvidia-6.8 (fixed in 6.8.0-1019.21~22.04.1)
- linux-nvidia-lowlatency (fixed in 6.8.0-1019.21.1)
- linux-nvidia-tegra (fixed in 5.15.0-1032.32)
- linux-nvidia-tegra-5.15 (fixed in 5.15.0-1032.32~20.04.1)
- linux-nvidia-tegra-igx (fixed in 5.15.0-1020.20)
- linux-oem
- linux-oem-5.10
- linux-oem-5.13
- linux-oem-5.14
- linux-oem-5.17
- linux-oem-5.6
- linux-oem-6.0
- linux-oem-6.1
- linux-oem-6.5
- linux-oem-6.8 (fixed in 6.8.0-1018.18)
- linux-oracle (fixed in 6.8.0-1017.18)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.15 (fixed in 5.15.0-1070.76~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.8
- linux-oracle-6.5
- linux-oracle-6.8 (fixed in 6.8.0-1017.18~22.04.1)
- linux-raspi (fixed in 6.8.0-1016.18)
- linux-raspi-realtime (fixed in 6.8.0-2015.16)
- linux-raspi2
- linux-realtime (fixed in 6.8.1-1013.14)
- linux-realtime-6.8 (fixed in 6.8.1-1013.14~22.04.1)
- linux-riscv (fixed in 6.8.0-50.51.1)
- linux-riscv-5.11
- linux-riscv-5.15 (fixed in 5.15.0-1068.72~20.04.1)
- linux-riscv-5.19
- linux-riscv-5.8
- linux-riscv-6.5
- linux-riscv-6.8 (fixed in 6.8.0-50.51.1~22.04.1)
- linux-starfive-5.19
- linux-starfive-6.2
- linux-starfive-6.5
- linux-xilinx (fixed in 6.8.0-1017.18)
- linux-xilinx-zynqmp (fixed in 5.15.0-1038.42)
Timeline and source
Published on 11 September 2024 and last revised on 17 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
www.cve.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
Other advisories for this package
linux has other advisories on record. If you are patching this one, these are worth checking on the same host:
- DEBIAN-CVE-2022-4994 (published 30 Jul 2026)
- CVE-2026-35233 (4.4 Medium, published 1 May 2026)
- CVE-2026-21996 (3.3 Low, published 1 May 2026)
- CVE-2026-21991 (5.5 Medium, published 16 Mar 2026)
- CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
- CGA-w6xv-3fg4-grm5 (published 29 Jan 2026)
- CGA-8vhr-fq3f-qx7q (published 7 Jan 2026)
- CGA-p49v-mx3v-9ff2 (published 7 Jan 2026)
CVE-2024-45009 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 6.8.0-50.51 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 6.8.0-1020.22 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1072.78~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-6.8 | — | 6.8.0-1020.22~22.04.1 |
| linux-aws-fips | — | 5.15.0-1072.78+fips1 |
| linux-azure | — | 6.8.0-1020.23 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1078.87~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-6.8 | — | 6.8.0-1020.23~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | — |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fips | — | 5.15.0-1075.84+fips1 |
| linux-bluefield | — | — |
| linux-fips | — | 6.8.0-78.78+fips1 |
| linux-gcp | — | 6.8.0-1019.21 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1071.79~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-6.8 | — | 6.8.0-1019.21~22.04.1 |
| linux-gcp-fips | — | 5.15.0-1071.79+fips1 |
| linux-gke | — | 6.8.0-1015.19 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 6.8.0-1002.4 |
| linux-gkeop-5.15 | — | 5.15.0-1055.62~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-125.135~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-6.8 | — | 6.8.0-50.51~22.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 6.8.0-1017.17 |
| linux-ibm-5.15 | — | 5.15.0-1065.68~20.04.1 |
| linux-ibm-6.8 | — | 6.8.0-1017.17~22.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1066.68 |
| linux-intel-iotg | — | 5.15.0-1067.73 |
| linux-intel-iotg-5.15 | — | 5.15.0-1067.73~20.04.1 |
| linux-kvm | — | 5.15.0-1069.74 |
| linux-lowlatency | — | 6.8.0-50.51.1 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-125.135~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lowlatency-hwe-6.8 | — | 6.8.0-50.51.1~22.04.1 |
| linux-nvidia | — | 6.8.0-1019.21 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| linux-nvidia-6.8 | — | 6.8.0-1019.21~22.04.1 |
| linux-nvidia-lowlatency | — | 6.8.0-1019.21.1 |
| linux-nvidia-tegra | — | 5.15.0-1032.32 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1032.32~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1020.20 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | — |
| linux-oem-6.5 | — | — |
| linux-oem-6.8 | — | 6.8.0-1018.18 |
| linux-oracle | — | 6.8.0-1017.18 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1070.76~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.5 | — | — |
| linux-oracle-6.8 | — | 6.8.0-1017.18~22.04.1 |
| linux-raspi | — | 6.8.0-1016.18 |
| linux-raspi-realtime | — | 6.8.0-2015.16 |
| linux-raspi2 | — | — |
| linux-realtime | — | 6.8.1-1013.14 |
| linux-realtime-6.8 | — | 6.8.1-1013.14~22.04.1 |
| linux-riscv | — | 6.8.0-50.51.1 |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1068.72~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.5 | — | — |
| linux-riscv-6.8 | — | 6.8.0-50.51.1~22.04.1 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx | — | 6.8.0-1017.18 |
| linux-xilinx-zynqmp | — | 5.15.0-1038.42 |
References
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