🛡️ UBUNTU-CVE-2022-49315
Description
In the Linux kernel, the following vulnerability has been resolved: drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop() There is a deadlock in rtllib_beacons_stop(), which is shown below: (Thread 1) | (Thread 2) | rtllib_send_beacon() rtllib_beacons_stop() | mod_timer() spin_lock_irqsave() //(1) | (wait a time) ... | rtllib_send_beacon_cb() del_timer_sync() | spin_lock_irqsave() //(2) (wait timer to stop) | ... We hold ieee->beacon_lock in position (1) of thread 1 and use del_timer_sync() to wait timer to stop, but timer handler also need ieee->beacon_lock in position (2) of thread 2. As a result, rtllib_beacons_stop() will block forever. This patch extracts del_timer_sync() from the protection of spin_lock_irqsave(), which could let timer handler to obtain the needed lock.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level 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 none, availability high.
Affected software and timeline
Affected software: linux (fixed in 5.15.0-48.54), linux-allwinner-5.19, linux-aws (fixed in 5.15.0-1020.24), linux-aws-5.0, linux-aws-5.11, linux-aws-5.13, linux-aws-5.15 (fixed in 5.15.0-1020.24~20.04.1), linux-aws-5.19, linux-aws-5.3, linux-aws-5.4 (fixed in 5.4.0-1085.92~18.04.1), linux-aws-5.8, linux-aws-6.2, linux-aws-6.5, linux-aws-fips, linux-aws-hwe (fixed in 4.15.0-1140.151~16.04.1), linux-azure (fixed in 5.15.0-1020.25), linux-azure-4.15 (fixed in 4.15.0-1150.165), linux-azure-5.11, linux-azure-5.13, linux-azure-5.15 (fixed in 5.15.0-1020.25~20.04.1), linux-azure-5.19, linux-azure-5.3, linux-azure-5.4 (fixed in 5.4.0-1091.96~18.04.1), linux-azure-5.8, linux-azure-6.2, linux-azure-6.5, linux-azure-edge, linux-azure-fde, linux-azure-fde-5.15, linux-azure-fde-5.19, linux-azure-fde-6.2, linux-azure-fips, linux-bluefield, linux-fips, linux-gcp (fixed in 5.15.0-1018.24), linux-gcp-4.15 (fixed in 4.15.0-1135.151), linux-gcp-5.11, linux-gcp-5.13, linux-gcp-5.15 (fixed in 5.15.0-1018.24~20.04.1), linux-gcp-5.19, linux-gcp-5.3, linux-gcp-5.4 (fixed in 5.4.0-1089.97~18.04.1), linux-gcp-5.8, linux-gcp-6.2, linux-gcp-6.5, linux-gcp-fips, linux-gke (fixed in 5.15.0-1016.19), linux-gke-4.15, linux-gke-5.15, linux-gke-5.4, linux-gkeop (fixed in 5.15.0-1003.5), linux-gkeop-5.15, linux-gkeop-5.4, linux-hwe, linux-hwe-5.11, linux-hwe-5.13, linux-hwe-5.15 (fixed in 5.15.0-48.54~20.04.1), linux-hwe-5.19, linux-hwe-5.4 (fixed in 5.4.0-126.142~18.04.1), linux-hwe-5.8, linux-hwe-6.2, linux-hwe-6.5, linux-hwe-edge, linux-ibm (fixed in 5.15.0-1015.17), linux-ibm-5.4 (fixed in 5.4.0-1033.37~18.04.1), linux-intel-5.13, linux-intel-iot-realtime, linux-intel-iotg (fixed in 5.15.0-1016.21), linux-intel-iotg-5.15 (fixed in 5.15.0-1016.21~20.04.1), linux-iot (fixed in 5.4.0-1004.6), linux-kvm (fixed in 5.15.0-1018.22), linux-lowlatency (fixed in 5.15.0-48.54), linux-lowlatency-hwe-5.15 (fixed in 5.15.0-48.54~20.04.1), linux-lowlatency-hwe-5.19, linux-lowlatency-hwe-6.2, linux-lowlatency-hwe-6.5, linux-lts-xenial, linux-nvidia (fixed in 5.15.0-1007.7), linux-nvidia-6.2, linux-nvidia-6.5, 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-oracle (fixed in 5.15.0-1018.23), linux-oracle-5.0, linux-oracle-5.11, linux-oracle-5.13, linux-oracle-5.15 (fixed in 5.15.0-1018.23~20.04.1), linux-oracle-5.3, linux-oracle-5.4 (fixed in 5.4.0-1083.91~18.04.1), linux-oracle-5.8, linux-oracle-6.5, linux-raspi (fixed in 5.15.0-1015.17), linux-raspi-5.4 (fixed in 5.4.0-1070.80~18.04.1), linux-raspi-realtime, linux-raspi2, linux-realtime (fixed in 5.15.0-1021.21), linux-riscv, linux-riscv-5.11, linux-riscv-5.15 (fixed in 5.15.0-1019.22~20.04.1), linux-riscv-5.19, linux-riscv-5.8, linux-riscv-6.5, linux-starfive-5.19, linux-starfive-6.2 and linux-starfive-6.5. Published on 26 February 2025 and last revised on 8 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.15.0-48.54 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 5.15.0-1020.24 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1020.24~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1085.92~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-fips | — | — |
| linux-aws-hwe | — | 4.15.0-1140.151~16.04.1 |
| linux-azure | — | 5.15.0-1020.25 |
| linux-azure-4.15 | — | 4.15.0-1150.165 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1020.25~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1091.96~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-edge | — | — |
| linux-azure-fde | — | — |
| linux-azure-fde-5.15 | — | — |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| linux-fips | — | — |
| linux-gcp | — | 5.15.0-1018.24 |
| linux-gcp-4.15 | — | 4.15.0-1135.151 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1018.24~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1089.97~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-fips | — | — |
| linux-gke | — | 5.15.0-1016.19 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1003.5 |
| linux-gkeop-5.15 | — | — |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-48.54~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | 5.4.0-126.142~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.15.0-1015.17 |
| linux-ibm-5.4 | — | 5.4.0-1033.37~18.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | — |
| linux-intel-iotg | — | 5.15.0-1016.21 |
| linux-intel-iotg-5.15 | — | 5.15.0-1016.21~20.04.1 |
| linux-iot | — | 5.4.0-1004.6 |
| linux-kvm | — | 5.15.0-1018.22 |
| linux-lowlatency | — | 5.15.0-48.54 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-48.54~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lts-xenial | — | — |
| linux-nvidia | — | 5.15.0-1007.7 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| 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-oracle | — | 5.15.0-1018.23 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1018.23~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1083.91~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.5 | — | — |
| linux-raspi | — | 5.15.0-1015.17 |
| linux-raspi-5.4 | — | 5.4.0-1070.80~18.04.1 |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | 5.15.0-1021.21 |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1019.22~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.5 | — | — |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
References
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