{"id":"CVE-2023-53676","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()\n\nThe function lio_target_nacl_info_show() uses sprintf() in a loop to print\ndetails for every iS…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()\n\nThe function lio_target_nacl_info_show() uses sprintf() in a loop to print\ndetails for every iS…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 3.1, < 4.14.326","linux_kernel >= 4.15, < 4.19.295","linux_kernel >= 4.20, < 5.4.257","linux_kernel >= 5.5, < 5.10.197","linux_kernel >= 5.11, < 5.15.133","linux_kernel >= 5.16, < 6.1.55","linux_kernel >= 6.2, < 6.5.5"],"patched":["linux_kernel 6.5.5"],"published":"2025-10-07","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:17:45.960","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-53676","references":[{"url":"https://git.kernel.org/stable/c/0cac6cbb9908309352a5d30c1876882771d3da50","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/114b44dddea1f8f99576de3c0e6e9059012002fc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2cbe6a88fbdd6e8aeab358eef61472e2de43d6f6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4738bf8b2d3635c2944b81b2a84d97b8c8b0978d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5353df78c22623b42a71d51226d228a8413097e2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/801f287c93ff95582b0a2d2163f12870a2f076d4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bbe3ff47bf09db8956bc2eeb49d2d514d256ad2a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/df349e84c2cb0dd05d98c8e1189c26ab4b116083","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00322,"epssPercentile":0.25065,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:36:24.101967Z"},"ingestedAt":"2026-10-15T22:48:25.413Z","slug":"CVE-2023-53676","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()\n\nThe function lio_target_nacl_info_show() uses sprintf() in a loop to print\ndetails for every iSCSI connection in a session without checking for the\nbuffer length. With enough iSCSI connections it's possible to overflow the\nbuffer provided by configfs and corrupt the memory.\n\nThis patch replaces sprintf() with sysfs_emit_at() that checks for buffer\nboundries.\n\n## Affected\n\n- `linux_kernel >= 3.1, < 4.14.326`\n- `linux_kernel >= 4.15, < 4.19.295`\n- `linux_kernel >= 4.20, < 5.4.257`\n- `linux_kernel >= 5.5, < 5.10.197`\n- `linux_kernel >= 5.11, < 5.15.133`\n- `linux_kernel >= 5.16, < 6.1.55`\n- `linux_kernel >= 6.2, < 6.5.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.5.5`","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}