{"id":"CVE-2023-53090","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix an illegal memory access\n\nIn the kfd_wait_on_events() function, the kfd_event_waiter structure is\nallocated by alloc_event_waiters(), but the event fiel…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix an illegal memory access\n\nIn the kfd_wait_on_events() function, the kfd_event_waiter structure is\nallocated by alloc_event_waiters(), but the event fiel…","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-125","CWE-908"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 3.19, < 4.19.279","linux_kernel >= 4.20, < 5.4.238","linux_kernel >= 5.5, < 5.10.176","linux_kernel >= 5.11, < 5.15.104","linux_kernel >= 5.16, < 6.1.21","linux_kernel >= 6.2, < 6.2.8"],"patched":["linux_kernel 6.2.8"],"published":"2025-05-02","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:17:37.137","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-53090","references":[{"url":"https://git.kernel.org/stable/c/2fece63b55c5d74cd6f5de51159e2cde37e10555","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4fc8fff378b2f2039f2a666d9f8c570f4e58352c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5a3fb3b745af0ce46ec2e0c8e507bae45b937334","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/61f306f8df0d5559659c5578cf6d95236bcdcb25","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6936525142a015e854d0a23e9ad9ea0a28b3843d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bbf5eada4334a96e3a204b2307ff5b14dc380b0b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d9923e7214a870b312bf61f6a89c7554d0966985","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53090.json"},{"url":"https://access.redhat.com/security/cve/CVE-2023-53090"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2363760"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-53090"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53090"},{"url":"https://lore.kernel.org/linux-cve-announce/2025050220-CVE-2023-53090-69c1@gregkh/T"},{"url":"https://access.redhat.com/errata/RHSA-2023:7077"}],"tags":["nvd","csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00213,"epssPercentile":0.11578,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:33:42.414674Z"},"scores":{"nvd":7.8,"vendor":5.5,"cna":7.8},"ingestedAt":"2026-10-15T22:48:25.389Z","slug":"CVE-2023-53090","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix an illegal memory access\n\nIn the kfd_wait_on_events() function, the kfd_event_waiter structure is\nallocated by alloc_event_waiters(), but the event field of the waiter\nstructure is not initialized; When copy_from_user() fails in the\nkfd_wait_on_events() function, it will enter exception handling to\nrelease the previously allocated memory of the waiter structure;\nDue to the event field of the waiters structure being accessed\nin the free_waiters() function, this results in illegal memory access\nand system crash, here is the crash log:\n\nlocalhost kernel: RIP: 0010:native_queued_spin_lock_slowpath+0x185/0x1e0\nlocalhost kernel: RSP: 0018:ffffaa53c362bd60 EFLAGS: 00010082\nlocalhost kernel: RAX: ff3d3d6bff4007cb RBX: 0000000000000282 RCX: 00000000002c0000\nlocalhost kernel: RDX: ffff9e855eeacb80 RSI: 000000000000279c RDI: ffffe7088f6a21d0\nlocalhost kernel: RBP: ffffe7088f6a21d0 R08: 00000000002c0000 R09: ffffaa53c362be64\nlocalhost kernel: R10: ffffaa53c362bbd8 R11: 0000000000000001 R12: 0000000000000002\nlocalhost kernel: R13: ffff9e7ead15d600 R14: 0000000000000000 R15: ffff9e7ead15d698\nlocalhost kernel: FS:  0000152a3d111700(0000) GS:ffff9e855ee80000(0000) knlGS:0000000000000000\nlocalhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nlocalhost kernel: CR2: 0000152938000010 CR3: 000000044d7a4000 CR4: 00000000003506e0\nlocalhost kernel: Call Trace:\nlocalhost kernel: _raw_spin_lock_irqsave+0x30/0x40\nlocalhost kernel: remove_wait_queue+0x12/0x50\nlocalhost kernel: kfd_wait_on_events+0x1b6/0x490 [hydcu]\nlocalhost kernel: ? ftrace_graph_caller+0xa0/0xa0\nlocalhost kernel: kfd_ioctl+0x38c/0x4a0 [hydcu]\nlocalhost kernel: ? kfd_ioctl_set_trap_handler+0x70/0x70 [hydcu]\nlocalhost kernel: ? kfd_ioctl_create_queue+0x5a0/0x5a0 [hydcu]\nlocalhost kernel: ? ftrace_graph_caller+0xa0/0xa0\nlocalhost kernel: __x64_sys_ioctl+0x8e/0xd0\nlocalhost kernel: ? syscall_trace_enter.isra.18+0x143/0x1b0\nlocalhost kernel: do_syscall_64+0x33/0x80\nlocalhost kernel: entry_SYSCALL_64_after_hwframe+0x44/0xa9\nlocalhost kernel: RIP: 0033:0x152a4dff68d7\n\nAllocate the structure with kcalloc, and remove redundant 0-initialization\nand a redundant loop condition check.\n\n## Affected\n\n- `linux_kernel >= 3.19, < 4.19.279`\n- `linux_kernel >= 4.20, < 5.4.238`\n- `linux_kernel >= 5.5, < 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\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-2023-53090.json)","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":230023,"id":"CVE-2023-53090","ts":1793124770736,"field":"cvss","old":"5.5","new":"7.8"},{"seq":230022,"id":"CVE-2023-53090","ts":1793124770736,"field":"severity","old":"medium","new":"high"},{"seq":223757,"id":"CVE-2023-53090","ts":1792238389135,"field":"cvss","old":"7.8","new":"5.5"},{"seq":223756,"id":"CVE-2023-53090","ts":1792238389135,"field":"severity","old":"high","new":"medium"}]}