Vulnerability · Published Jul 12, 2024 · Assigned by Linux
CVE-2024-40931mptcp: ensure snd_una is properly initialized on connect
Medium 5.5
In plain English
A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 83.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In the Linux kernel, the following vulnerability has been resolved: mptcp: ensure snd_una is properly initialized on connect This is strictly related to commit fb7a0d334894 ("mptcp: ensure snd_nxt is properly initialized on connect"). It turns out that syzkaller can trigger the retransmit after fallback and before processing any other incoming packet - so that snd_una is still left uninitialized. Address the issue explicitly initializing snd_una together with snd_nxt and write_seq.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | bpftool | 7.3.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-debug | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-debug-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-debug-devel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-debug-modules | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-devel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-devel-matched | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-modules | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-modules-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-64k-modules-extra | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-abi-stablelists | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-cross-headers | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-debug | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-debug-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-debug-devel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-debug-devel-matched | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-debug-modules | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-debug-modules-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-debug-modules-extra | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-debug-uki-virt | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-devel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-devel-matched | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-doc | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-headers | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-modules | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-modules-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-modules-extra | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-debug | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-debug-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-debug-devel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-debug-modules | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-debug-modules-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-debug-modules-extra | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-devel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-modules | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-modules-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-rt-modules-extra | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-tools | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-tools-libs | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-tools-libs-devel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-uki-virt | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-zfcpdump | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-zfcpdump-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-zfcpdump-devel | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-zfcpdump-devel-matched | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-zfcpdump-modules | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-zfcpdump-modules-core | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | kernel-zfcpdump-modules-extra | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | libperf | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | perf | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | python3-perf | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | rtla | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| AlmaLinux:9 | rv | 5.14.0-427.42.1.el9_4 | ALSA-2024:8617 |
| Debian:12 | linux | 6.1.99-1 | DSA-5731-1 |
| Debian:12 | linux | 6.1.99-1 | DEBIAN-CVE-2024-40931 |
| Debian:13 | linux | 6.9.7-1 | DEBIAN-CVE-2024-40931 |
| Debian:14 | linux | 6.9.7-1 | DEBIAN-CVE-2024-40931 |
| Rocky Linux:9 | kernel | 0:5.14.0-427.42.1.el9_4 | RLSA-2024:8617 |
| Ubuntu:22.04:LTS | linux | 5.15.0-121.131 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux | 6.8.0-44.44 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1069.75 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1015.16 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1015.16~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1072.81 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1014.16 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1014.16~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1072.81.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1068.76 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1014.16 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1014.16~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1066.72 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1010.13 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1052.59 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-45.45~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1062.65 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1012.12 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1012.12~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1064.70 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1066.71 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-121.131 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-44.44.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-44.44.1~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1064.65 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1013.14 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1013.14~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1013.14.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1028.28 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1016.16 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | 6.8.0-1012.12 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1067.73 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1012.12 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1012.12~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1062.65 | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1011.12 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:24.04:LTS | linux-riscv | 6.8.0-44.44.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | 6.8.0-44.44.1~22.04.1 | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2024-40931 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1035.39 | UBUNTU-CVE-2024-40931 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 8fd738049ac3d67a937d36577763b47180aae1ad – before 208cd22ef5e57f82d38ec11c1a1703f9401d6dde8fd738049ac3d67a937d36577763b47180aae1ad – before 7b9c7fc8600b64a86e4b47b2d190bba3802677268fd738049ac3d67a937d36577763b47180aae1ad – before f03c46eabb3a67bd2993e237ab5517f00a5f18138fd738049ac3d67a937d36577763b47180aae1ad – before f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f8fd738049ac3d67a937d36577763b47180aae1ad – before ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce8fd738049ac3d67a937d36577763b47180aae1ad – before 8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3 |
| Linux | Linux | 5.9 |
References
- https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde
- https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726
- https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813
- https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f
- https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce
- https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html