{"id":"CVE-2026-23434","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: rawnand: serialize lock/unlock against other NAND operations\n\nnand_lock() and nand_unlock() call into chip->ops.lock_area/unlock_area\nwithout holding the NAND devi…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: rawnand: serialize lock/unlock against other NAND operations\n\nnand_lock() and nand_unlock() call into chip->ops.lock_area/unlock_area\nwithout holding the NAND devi…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.7.1, < 5.10.253","linux_kernel >= 5.11, < 5.15.203","linux_kernel >= 5.16, < 6.1.167","linux_kernel >= 6.2, < 6.6.130","linux_kernel >= 6.7, < 6.12.78","linux_kernel >= 6.13, < 6.18.20","linux_kernel >= 6.19, < 6.19.10","linux_kernel = 5.7","linux_kernel = 7.0"],"patched":["linux_kernel 6.19.10"],"published":"2026-04-03","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:18:56.260","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-23434","references":[{"url":"https://git.kernel.org/stable/c/28ea836cc44cb8b89c1c174707ead0c1133c60e9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5fd5c078af23cb353507aa522e09d557d7eaef04","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a80291e577b44593a724d6cd64c14337c78f194d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bab2bc6e850a697a23b9e5f0e21bb8c187615e95","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ce5229e78078e437704157eb542f43a6f83b429b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f25446e2c28939753d3b62d34dfda49952b2557d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f71ce0ae5aefe39dd5b2f996c0e08550d2153ad2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fe4a73c3dd48308149d57a10c2761e1d36ced7ba","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-457936.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00106,"epssPercentile":0.01103,"ingestedAt":"2026-09-08T15:33:26.992Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T15:08:00.897129Z"},"slug":"CVE-2026-23434","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmtd: rawnand: serialize lock/unlock against other NAND operations\n\nnand_lock() and nand_unlock() call into chip->ops.lock_area/unlock_area\nwithout holding the NAND device lock. On controllers that implement\nSET_FEATURES via multiple low-level PIO commands, these can race with\nconcurrent UBI/UBIFS background erase/write operations that hold the\ndevice lock, resulting in cmd_pending conflicts on the NAND controller.\n\nAdd nand_get_device()/nand_release_device() around the lock/unlock\noperations to serialize them against all other NAND controller access.\n\n## Affected\n\n- `linux_kernel >= 5.7.1, < 5.10.253`\n- `linux_kernel >= 5.11, < 5.15.203`\n- `linux_kernel >= 5.16, < 6.1.167`\n- `linux_kernel >= 6.2, < 6.6.130`\n- `linux_kernel >= 6.7, < 6.12.78`\n- `linux_kernel >= 6.13, < 6.18.20`\n- `linux_kernel >= 6.19, < 6.19.10`\n- `linux_kernel = 5.7`\n- `linux_kernel = 7.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.19.10`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}