Description
In the Linux kernel, the following vulnerability has been resolved: af_unix: Fix data races in unix_release_sock/unix_stream_sendmsg A data-race condition has been identified in af_unix. In one data path, the write function unix_release_sock() atomically writes to sk->sk_shutdown using WRITE_ONCE. However, on the reader side, unix_stream_sendmsg() does not read it atomically. Consequently, this issue is causing the following KCSAN splat to occur: BUG: KCSAN: data-race in unix_release_sock / unix_stream_sendmsg write (marked) to 0xffff88867256ddbb of 1 bytes by task 7270 on cpu 28: unix_release_sock (net/unix/af_unix.c:640) unix_release (net/unix/af_unix.c:1050) sock_close (net/socket.c:659 net/socket.c:1421) __fput (fs/file_table.c:422) __fput_sync (fs/file_table.c:508) __se_sys_close (fs/open.c:1559 fs/open.c:1541) __x64_sys_close (fs/open.c:1541) x64_sys_call (arch/x86/entry/syscall_64.c:33) do_syscall_64 (arch/x86/entry/common.c:?) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) read to 0xffff88867256ddbb of 1 bytes by task 989 on cpu 14: unix_stream_sendmsg (net/unix/af_unix.c:2273) __sock_sendmsg (net/socket.c:730 net/socket.c:745) ____sys_sendmsg (net/socket.c:2584) __sys_sendmmsg (net/socket.c:2638 net/socket.c:2724) __x64_sys_sendmmsg (net/socket.c:2753 net/socket.c:2750 net/socket.c:2750) x64_sys_call (arch/x86/entry/syscall_64.c:33) do_syscall_64 (arch/x86/entry/common.c:?) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) value changed: 0x01 -> 0x03 The line numbers are related to commit dd5a440a31fa ("Linux 6.9-rc7"). Commit e1d09c2c2f57 ("af_unix: Fix data races around sk->sk_shutdown.") addressed a comparable issue in the past regarding sk->sk_shutdown. However, it overlooked resolving this particular data path. This patch only offending unix_stream_sendmsg() function, since the other reads seem to be protected by unix_state_lock() as discussed in
Details
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 6.8.0-40.40 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 6.8.0-1013.14 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1069.75~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1130.140~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-6.8 | — | 6.8.0-1013.14~22.04.1 |
| linux-aws-fips | — | 5.15.0-1069.75+fips1 |
| linux-aws-hwe | — | 4.15.0-1175.188~16.04.1 |
| linux-azure | — | 6.8.0-1012.14 |
| linux-azure-4.15 | — | 4.15.0-1183.198 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1072.81~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1135.142~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-6.8 | — | 6.8.0-1012.14~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | 5.15.0-1072.81.1 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fips | — | 5.15.0-1072.81+fips1 |
| linux-bluefield | — | — |
| linux-fips | — | 6.8.0-78.78+fips1 |
| linux-gcp | — | 6.8.0-1012.13 |
| linux-gcp-4.15 | — | 4.15.0-1168.185 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1068.76~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1134.143~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-6.8 | — | 6.8.0-1012.13~22.04.1 |
| linux-gcp-fips | — | 5.15.0-1068.76+fips1 |
| linux-gke | — | 6.8.0-1008.11 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1052.59 |
| linux-gkeop-5.15 | — | 5.15.0-1052.59~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-121.131~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | 5.4.0-192.212~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-6.8 | — | 6.8.0-40.40~22.04.3 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 6.8.0-1010.10 |
| linux-ibm-5.15 | — | 5.15.0-1062.65~20.04.1 |
| linux-ibm-5.4 | — | 5.4.0-1077.82~18.04.1 |
| linux-ibm-6.8 | — | 6.8.0-1010.10~22.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1063.65 |
| linux-intel-iotg | — | 5.15.0-1064.70 |
| linux-intel-iotg-5.15 | — | 5.15.0-1064.70~20.04.1 |
| linux-iot | — | 5.4.0-1042.43 |
| linux-kvm | — | 5.15.0-1066.71 |
| linux-lowlatency | — | 6.8.0-40.40.1 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-121.131~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lowlatency-hwe-6.8 | — | 6.8.0-40.40.1~22.04.1 |
| linux-lts-xenial | — | — |
| linux-nvidia | — | 6.8.0-1011.11 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| linux-nvidia-6.8 | — | 6.8.0-1011.11~22.04.1 |
| linux-nvidia-lowlatency | — | 6.8.0-1011.11.1 |
| linux-nvidia-tegra | — | 5.15.0-1028.28 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1030.30~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1016.16 |
| 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 | — | 6.8.0-1010.10 |
| linux-oracle | — | 6.8.0-1010.10 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1067.73~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1129.138~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.5 | — | — |
| linux-oracle-6.8 | — | 6.8.0-1010.10~22.04.1 |
| linux-raspi | — | 6.8.0-1009.10 |
| linux-raspi-5.4 | — | 5.4.0-1114.126~18.04.1 |
| linux-raspi-realtime | — | 6.8.0-2008.8 |
| linux-raspi2 | — | — |
| linux-realtime | — | 6.8.1-1006.6 |
| linux-realtime-6.8 | — | 6.8.1-1006.6~22.04.1 |
| linux-riscv | — | 6.8.0-40.40.1 |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1065.69~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.5 | — | — |
| linux-riscv-6.8 | — | 6.8.0-40.40.1~22.04.1 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx-zynqmp | — | 5.15.0-1035.39 |
References
Similar Threats
- Unknown CGA-23jx-hhcx-m389
- Unknown CGA-2qp7-6757-fmgc
- Unknown CGA-2rj5-jc55-r267
- Unknown CGA-3m96-cwq8-6xmx
- Unknown CGA-3qj9-973w-fh9g
Free Vulnerability Check
Is your WordPress site affected?
BotEraser helps you identify potentially vulnerable plugins and themes by checking your installation against known CVE records.
Scan My Site Free →No credit card required · Results in minutes
ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.
