--- id: CVE-2023-52522 title: |- 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 anno… summary: |- 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 anno… severity: high cvss: 8.8 cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H' vendor: linux product: linux_kernel affected: - 'linux_kernel >= 2.6.37, < 5.4.258' - 'linux_kernel >= 5.5, < 5.10.198' - 'linux_kernel >= 5.11, < 5.15.135' - 'linux_kernel >= 5.16, < 6.1.57' - 'linux_kernel >= 6.2, < 6.5.7' - linux_kernel = 6.6 patched: - linux_kernel 6.5.7 published: '2024-03-02' updated: '2026-08-04' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-52522' references: - url: 'https://git.kernel.org/stable/c/147d89ee41434b97043c2dcb17a97dc151859baa' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/25563b581ba3a1f263a00e8c9a97f5e7363be6fd' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/95eabb075a5902f4c0834ab1fb12dc35730c05af' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/a75152d233370362eebedb2643592e7c883cc9fc' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/f82aac8162871e87027692b36af335a2375d4580' label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 - url: 'https://git.kernel.org/stable/c/147d89ee41434b97043c2dcb17a97dc151859baa' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/25563b581ba3a1f263a00e8c9a97f5e7363be6fd' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/95eabb075a5902f4c0834ab1fb12dc35730c05af' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/a75152d233370362eebedb2643592e7c883cc9fc' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://git.kernel.org/stable/c/f82aac8162871e87027692b36af335a2375d4580' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52522.json - url: 'https://access.redhat.com/security/cve/CVE-2023-52522' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2267795' - url: 'https://www.cve.org/CVERecord?id=CVE-2023-52522' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2023-52522' - url: >- https://lore.kernel.org/linux-cve-announce/2024030253-CVE-2023-52522-6abd@gregkh/T/#u - url: 'https://access.redhat.com/errata/RHSA-2024:9497' - url: 'https://access.redhat.com/errata/RHSA-2024:2394' - url: 'https://access.redhat.com/errata/RHSA-2024:7000' - url: 'https://access.redhat.com/errata/RHSA-2024:6998' - url: 'https://access.redhat.com/errata/RHSA-2024:6993' - url: 'https://access.redhat.com/errata/RHSA-2024:7001' - url: 'https://access.redhat.com/errata/RHSA-2024:9498' tags: - nvd - csaf - vex - red-hat - score-dispute epss: 0.00335 epssPercentile: 0.26727 ingestedAt: '2026-08-05T05:58:02.151Z' cwe: - CWE-20 scores: nvd: 8.8 vendor: 5.5 --- ## Overview 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(). ## Affected - `linux_kernel >= 2.6.37, < 5.4.258` - `linux_kernel >= 5.5, < 5.10.198` - `linux_kernel >= 5.11, < 5.15.135` - `linux_kernel >= 5.16, < 6.1.57` - `linux_kernel >= 6.2, < 6.5.7` - `linux_kernel = 6.6` ## Remediation Upgrade past the affected range: - `linux_kernel 6.5.7` ## Vendor advisories - **RHSA-2024:9497** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.2), Red Hat Enterprise Linux BaseOS EUS (v.9.2), Red Hat CodeReady Linux Builder EUS (v.9.2) · released 2024-11-13 · [advisory](https://access.redhat.com/errata/RHSA-2024:9497) - **RHSA-2024:2394** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9), Red Hat Enterprise Linux CRB (v. 9), Red Hat Enterprise Linux NFV (v. 9), Red Hat Enterprise Linux RT (v. 9) · released 2024-04-30 · [advisory](https://access.redhat.com/errata/RHSA-2024:2394) - **RHSA-2024:7000** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2024-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2024:7000) - **RHSA-2024:6998** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS E4S (v.8.6), Red Hat Enterprise Linux BaseOS TUS (v.8.6) · released 2024-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2024:6998) - **RHSA-2024:6993** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS EUS (v.8.8), Red Hat CodeReady Linux Builder EUS (v.8.8) · released 2024-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2024:6993) - **RHSA-2024:7001** · Red Hat · fixed in: Red Hat Enterprise Linux NFV (v. 8), Red Hat Enterprise Linux RT (v. 8) · released 2024-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2024:7001) - **RHSA-2024:9498** · Red Hat · fixed in: Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2), Red Hat Enterprise Linux Real Time EUS (v.9.2) · released 2024-11-13 · [advisory](https://access.redhat.com/errata/RHSA-2024:9498) - **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52522.json)