🛡️ CVE-2023-52522 on Ubuntu — linux
Description
In the Linux kernel, the following vulnerability has been resolved: net: fix possible store tearing in neigh_periodic_work() While looking at a related syzbot report involving neigh_periodic_work(), I found that I forgot to add an annotation when deleting an RCU protected item from a list. Readers use rcu_deference(*np), we need to use either rcu_assign_pointer() or WRITE_ONCE() on writer side to prevent store tearing. I use rcu_assign_pointer() to have lockdep support, this was the choice made in neigh_flush_dev().
Distribution advisory
This page covers CVE-2023-52522 as tracked by Ubuntu, for the package linux. The fix is available in version 5.15.0-94.104; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached from an adjacent 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 high, integrity high, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Adjacent network — the attacker has to sit on the same local or logical network.
- 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: High — total loss, or loss the attacker controls.
- Integrity impact: High — total loss, or loss the attacker controls.
- Availability impact: High — total loss, or loss the attacker controls.
Affected software
UBUNTU-CVE-2023-52522 is recorded against 115 packages.
- linux (fixed in 5.15.0-94.104)
- linux-allwinner-5.19
- linux-aws (fixed in 5.15.0-1053.58)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.15 (fixed in 5.15.0-1053.58~20.04.1)
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.4 (fixed in 5.4.0-1118.128~18.04.1)
- linux-aws-5.8
- linux-aws-6.2
- linux-aws-6.5
- linux-aws-fips (fixed in 5.15.0-1053.58+fips1)
- linux-aws-hwe (fixed in 4.15.0-1178.191~16.04.1)
- linux-azure (fixed in 5.15.0-1056.64)
- linux-azure-4.15 (fixed in 4.15.0-1186.201)
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.15 (fixed in 5.15.0-1056.64~20.04.1)
- linux-azure-5.19
- linux-azure-5.3
- linux-azure-5.4 (fixed in 5.4.0-1123.130~18.04.1)
- linux-azure-5.8
Show the remaining 91 packages
- linux-azure-6.2
- linux-azure-6.5
- linux-azure-edge
- linux-azure-fde
- linux-azure-fde-5.19
- linux-azure-fde-6.2
- linux-azure-fde-6.8
- linux-azure-fips
- linux-bluefield
- linux-fips (fixed in 5.15.0-94.104+fips1)
- linux-gcp (fixed in 5.15.0-1051.59)
- linux-gcp-4.15 (fixed in 4.15.0-1171.188)
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.15 (fixed in 5.15.0-1051.59~20.04.1)
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.4 (fixed in 5.4.0-1122.131~18.04.1)
- linux-gcp-5.8
- linux-gcp-6.2
- linux-gcp-6.5
- linux-gcp-fips (fixed in 5.15.0-1055.63+fips2)
- linux-gke (fixed in 5.15.0-1050.55)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 5.15.0-1036.42)
- linux-gkeop-5.15 (fixed in 5.15.0-1036.42~20.04.1)
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.15 (fixed in 5.15.0-94.104~20.04.1)
- linux-hwe-5.19
- linux-hwe-5.4 (fixed in 5.4.0-171.189~18.04.1)
- linux-hwe-5.8
- linux-hwe-6.2
- linux-hwe-6.5
- linux-hwe-edge
- linux-ibm (fixed in 5.15.0-1046.49)
- linux-ibm-5.15 (fixed in 5.15.0-1046.49~20.04.1)
- linux-ibm-5.4 (fixed in 5.4.0-1065.70~18.04.1)
- linux-intel-5.13
- linux-intel-iot-realtime (fixed in 5.15.0-1046.48)
- linux-intel-iotg (fixed in 5.15.0-1047.53)
- linux-intel-iotg-5.15 (fixed in 5.15.0-1048.54~20.04.1)
- linux-iot (fixed in 5.4.0-1030.31)
- linux-kvm (fixed in 5.15.0-1050.55)
- linux-lowlatency (fixed in 5.15.0-94.104)
- linux-lowlatency-hwe-5.15 (fixed in 5.15.0-94.104~20.04.1)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.2
- linux-lowlatency-hwe-6.5
- linux-lts-xenial (fixed in 4.4.0-266.300~14.04.1)
- linux-nvidia (fixed in 5.15.0-1044.44)
- linux-nvidia-6.2
- linux-nvidia-6.5 (fixed in 6.5.0-1014.14)
- linux-nvidia-tegra (fixed in 5.15.0-1022.22)
- linux-nvidia-tegra-5.15 (fixed in 5.15.0-1022.22~20.04.1)
- linux-nvidia-tegra-igx (fixed in 5.15.0-1009.9)
- 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 5.15.0-1051.57)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.15 (fixed in 5.15.0-1051.57~20.04.1)
- linux-oracle-5.3
- linux-oracle-5.4 (fixed in 5.4.0-1117.126~18.04.1)
- linux-oracle-5.8
- linux-oracle-6.5
- linux-raspi (fixed in 5.15.0-1046.49)
- linux-raspi-5.4 (fixed in 5.4.0-1102.114~18.04.1)
- linux-raspi-realtime
- linux-raspi2
- linux-realtime (fixed in 5.15.0-1054.60)
- linux-riscv
- linux-riscv-5.11
- linux-riscv-5.15 (fixed in 5.15.0-1049.53~20.04.2)
- linux-riscv-5.19
- linux-riscv-5.8
- linux-starfive-5.19
- linux-starfive-6.2
- linux-xilinx-zynqmp (fixed in 5.15.0-1027.31)
Timeline and source
Published on 2 March 2024 and last revised on 18 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
git.kernel.org (Report)
www.cve.org (Report)
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-2026-21996 (3.3 Low, published 1 May 2026)
- CVE-2026-35233 (4.4 Medium, 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-6749-c84f-cv6j (published 7 Jan 2026)
- CGA-gqvj-m2xp-q99r (published 7 Jan 2026)
CVE-2023-52522 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 5.15.0-94.104 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 5.15.0-1053.58 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1053.58~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | 5.4.0-1118.128~18.04.1 |
| linux-aws-5.8 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-fips | — | 5.15.0-1053.58+fips1 |
| linux-aws-hwe | — | 4.15.0-1178.191~16.04.1 |
| linux-azure | — | 5.15.0-1056.64 |
| linux-azure-4.15 | — | 4.15.0-1186.201 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1056.64~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | 5.4.0-1123.130~18.04.1 |
| linux-azure-5.8 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-edge | — | — |
| linux-azure-fde | — | — |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fde-6.8 | — | — |
| linux-azure-fips | — | — |
| linux-bluefield | — | — |
| linux-fips | — | 5.15.0-94.104+fips1 |
| linux-gcp | — | 5.15.0-1051.59 |
| linux-gcp-4.15 | — | 4.15.0-1171.188 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1051.59~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | 5.4.0-1122.131~18.04.1 |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-fips | — | 5.15.0-1055.63+fips2 |
| linux-gke | — | 5.15.0-1050.55 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 5.15.0-1036.42 |
| linux-gkeop-5.15 | — | 5.15.0-1036.42~20.04.1 |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-94.104~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | 5.4.0-171.189~18.04.1 |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-edge | — | — |
| linux-ibm | — | 5.15.0-1046.49 |
| linux-ibm-5.15 | — | 5.15.0-1046.49~20.04.1 |
| linux-ibm-5.4 | — | 5.4.0-1065.70~18.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1046.48 |
| linux-intel-iotg | — | 5.15.0-1047.53 |
| linux-intel-iotg-5.15 | — | 5.15.0-1048.54~20.04.1 |
| linux-iot | — | 5.4.0-1030.31 |
| linux-kvm | — | 5.15.0-1050.55 |
| linux-lowlatency | — | 5.15.0-94.104 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-94.104~20.04.1 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lts-xenial | — | 4.4.0-266.300~14.04.1 |
| linux-nvidia | — | 5.15.0-1044.44 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | 6.5.0-1014.14 |
| linux-nvidia-tegra | — | 5.15.0-1022.22 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1022.22~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1009.9 |
| 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 | — | 5.15.0-1051.57 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1051.57~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | 5.4.0-1117.126~18.04.1 |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.5 | — | — |
| linux-raspi | — | 5.15.0-1046.49 |
| linux-raspi-5.4 | — | 5.4.0-1102.114~18.04.1 |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | 5.15.0-1054.60 |
| linux-riscv | — | — |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1049.53~20.04.2 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-xilinx-zynqmp | — | 5.15.0-1027.31 |
References
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