{"id":"CVE-2022-4696","title":"There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation","summary":"There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, s…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-763","CWE-416"],"vendor":"netapp","product":"h410s_firmware","affected":["h410s_firmware","h410c_firmware","h700s_firmware","h500s_firmware","h300s_firmware","linux_kernel >= 5.4, < 5.10.160","linux_kernel >= 5.11, < 5.12"],"patched":["linux_kernel 5.12"],"published":"2023-01-11","updated":"2026-09-01","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-4696","references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a","label":"cve-coordination@google.com"},{"url":"https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a","label":"cve-coordination@google.com"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20230223-0003/","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00432,"epssPercentile":0.36927,"ingestedAt":"2026-09-01T18:30:36.607Z","slug":"CVE-2022-4696","body":"## Overview\n\nThere exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above\n\n\n## Affected\n\n- `h410s_firmware`\n- `h410c_firmware`\n- `h700s_firmware`\n- `h500s_firmware`\n- `h300s_firmware`\n- `linux_kernel >= 5.4, < 5.10.160`\n- `linux_kernel >= 5.11, < 5.12`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.12`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}