{"id":"CVE-2023-53084","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/shmem-helper: Remove another errant put in error path\n\ndrm_gem_shmem_mmap() doesn't own reference in error code path, resulting\nin the dma-buf shmem GEM object gett…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/shmem-helper: Remove another errant put in error path\n\ndrm_gem_shmem_mmap() doesn't own reference in error code path, resulting\nin the dma-buf shmem GEM object gett…","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","CWE-825"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.9.5, < 5.10","linux_kernel >= 5.10.1, < 5.10.176","linux_kernel >= 5.11, < 5.15.104","linux_kernel >= 5.16, < 6.1.21","linux_kernel >= 6.2, < 6.2.8","linux_kernel = 5.10","linux_kernel = 6.3"],"patched":["linux_kernel 6.2.8"],"published":"2025-05-02","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:17:36.467","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-53084","references":[{"url":"https://git.kernel.org/stable/c/5cfb617967b05f8f27e862c97db1fabd8485f4db","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/684c7372bbd6447c2e86a2a84e97a1478604d21f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/77d26c824aa5a7e0681ef1d5b75fe538d746addc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dede8c14a37a7ac458f9add56154a074ed78e7cf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ee9adb7a45516cfa536ca92253d7ae59d56db9e4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53084.json"},{"url":"https://access.redhat.com/security/cve/CVE-2023-53084"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2363784"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-53084"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53084"},{"url":"https://lore.kernel.org/linux-cve-announce/2025050218-CVE-2023-53084-b380@gregkh/T"},{"url":"https://access.redhat.com/errata/RHSA-2023:7077"}],"tags":["nvd","csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00207,"epssPercentile":0.10665,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:33:27.384820Z"},"scores":{"nvd":7.8,"vendor":5.5,"cna":7.8},"ingestedAt":"2026-10-15T22:48:25.388Z","slug":"CVE-2023-53084","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/shmem-helper: Remove another errant put in error path\n\ndrm_gem_shmem_mmap() doesn't own reference in error code path, resulting\nin the dma-buf shmem GEM object getting prematurely freed leading to a\nlater use-after-free.\n\n## Affected\n\n- `linux_kernel >= 5.9.5, < 5.10`\n- `linux_kernel >= 5.10.1, < 5.10.176`\n- `linux_kernel >= 5.11, < 5.15.104`\n- `linux_kernel >= 5.16, < 6.1.21`\n- `linux_kernel >= 6.2, < 6.2.8`\n- `linux_kernel = 5.10`\n- `linux_kernel = 6.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.2.8`\n\n## Vendor advisories\n\n- **RHSA-2023:7077** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8), Red Hat CodeReady Linux Builder (v. 8) · released 2023-11-14 · [advisory](https://access.redhat.com/errata/RHSA-2023:7077)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53084.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":230017,"id":"CVE-2023-53084","ts":1793124770572,"field":"cvss","old":"5.5","new":"7.8"},{"seq":230016,"id":"CVE-2023-53084","ts":1793124770572,"field":"severity","old":"medium","new":"high"},{"seq":223761,"id":"CVE-2023-53084","ts":1792238389882,"field":"cvss","old":"7.8","new":"5.5"},{"seq":223760,"id":"CVE-2023-53084","ts":1792238389882,"field":"severity","old":"high","new":"medium"}]}