{"id":"CVE-2026-53160","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: fix use-after-free race in fastrpc_map_create\n\nfastrpc_map_lookup returns a raw pointer after releasing fl->lock","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: fix use-after-free race in fastrpc_map_create\n\nfastrpc_map_lookup returns a raw pointer after releasing fl->lock. The\ncaller fastrpc_map_create then call…","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-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.1.156, < 6.1.176","linux_kernel >= 6.6.112, < 6.6.143","linux_kernel >= 6.12.53, < 6.12.94","linux_kernel >= 6.17.3, < 6.18.36","linux_kernel >= 6.19, < 7.0.13","linux_kernel = 7.1"],"patched":["linux_kernel 7.0.13"],"published":"2026-06-25","updated":"2026-07-06","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53160","references":[{"url":"https://git.kernel.org/stable/c/07ebe87915d8accdaba20c4f88c5ae430fe62fbb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/0a3b87293fbd34fda651e6aead9964f84b893962","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5b0166112019d1dce30b976ab28fd67f7f0be532","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8b080c89183196fd3e49212f2a1a1c4a29335b9c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/992f121796b7ca83a5a8b93da24e971363206218","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f20f6512ecb75c816e0debf4551a138f098615c4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00171,"epssPercentile":0.06829,"ingestedAt":"2026-07-06T17:44:51.365Z","slug":"CVE-2026-53160","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: fix use-after-free race in fastrpc_map_create\n\nfastrpc_map_lookup returns a raw pointer after releasing fl->lock. The\ncaller fastrpc_map_create then calls fastrpc_map_get (kref_get_unless_zero)\non this unprotected pointer. A concurrent MEM_UNMAP can free the map\nbetween the lock release and the kref operation, resulting in a\nuse-after-free on the freed slab object.\n\nRestore the take_ref parameter to fastrpc_map_lookup so the reference\nis acquired atomically under fl->lock before the pointer is exposed to\nthe caller.\n\n## Affected\n\n- `linux_kernel >= 6.1.156, < 6.1.176`\n- `linux_kernel >= 6.6.112, < 6.6.143`\n- `linux_kernel >= 6.12.53, < 6.12.94`\n- `linux_kernel >= 6.17.3, < 6.18.36`\n- `linux_kernel >= 6.19, < 7.0.13`\n- `linux_kernel = 7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.13`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}