{"id":"CVE-2023-53453","title":"drm/radeon: free iio for atombios when driver shutdown","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: free iio for atombios when driver shutdown\n\nFix below kmemleak when unload radeon driver:\n\nunreferenced object 0xffff9f8608ede200 (size 512):\n  comm \"system…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < cb109cedbba11c33473e6780c256d8442a9e4460","Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < 9cdb96b55651c92fc949cfd54124406c3c912b6b","Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < f9f55fc64928b5e30d78f861c5fc76db9e769ebb","Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < ce9e9d3dcbb0d1551ffd1a7f16e7c051f3ba4140","Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < cda2f7efbc2d857220dad32e315a54565b285c1c","Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < 107b8b542bb9dab4cbdc3276c85fbdd7f6782313","Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < e2791f2f4d1d804e45fa91b14295c326b64c65f1","Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < 4773fadedca918faec443daaca5e4ea1c0ced144","Linux 2.6.31"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:21:04.714120Z"},"published":"2025-10-01","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:31:09.522Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53453","references":[{"url":"https://git.kernel.org/stable/c/cb109cedbba11c33473e6780c256d8442a9e4460"},{"url":"https://git.kernel.org/stable/c/9cdb96b55651c92fc949cfd54124406c3c912b6b"},{"url":"https://git.kernel.org/stable/c/f9f55fc64928b5e30d78f861c5fc76db9e769ebb"},{"url":"https://git.kernel.org/stable/c/ce9e9d3dcbb0d1551ffd1a7f16e7c051f3ba4140"},{"url":"https://git.kernel.org/stable/c/cda2f7efbc2d857220dad32e315a54565b285c1c"},{"url":"https://git.kernel.org/stable/c/107b8b542bb9dab4cbdc3276c85fbdd7f6782313"},{"url":"https://git.kernel.org/stable/c/e2791f2f4d1d804e45fa91b14295c326b64c65f1"},{"url":"https://git.kernel.org/stable/c/4773fadedca918faec443daaca5e4ea1c0ced144"}],"tags":["cve.org"],"epss":0.0016,"epssPercentile":0.05153,"ingestedAt":"2026-11-05T22:38:31.796Z","slug":"CVE-2023-53453","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: free iio for atombios when driver shutdown\n\nFix below kmemleak when unload radeon driver:\n\nunreferenced object 0xffff9f8608ede200 (size 512):\n  comm \"systemd-udevd\", pid 326, jiffies 4294682822 (age 716.338s)\n  hex dump (first 32 bytes):\n    00 00 00 00 c4 aa ec aa 14 ab 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [<0000000062fadebe>] kmem_cache_alloc_trace+0x2f1/0x500\n    [<00000000b6883cea>] atom_parse+0x117/0x230 [radeon]\n    [<00000000158c23fd>] radeon_atombios_init+0xab/0x170 [radeon]\n    [<00000000683f672e>] si_init+0x57/0x750 [radeon]\n    [<00000000566cc31f>] radeon_device_init+0x559/0x9c0 [radeon]\n    [<0000000046efabb3>] radeon_driver_load_kms+0xc1/0x1a0 [radeon]\n    [<00000000b5155064>] drm_dev_register+0xdd/0x1d0\n    [<0000000045fec835>] radeon_pci_probe+0xbd/0x100 [radeon]\n    [<00000000e69ecca3>] pci_device_probe+0xe1/0x160\n    [<0000000019484b76>] really_probe.part.0+0xc1/0x2c0\n    [<000000003f2649da>] __driver_probe_device+0x96/0x130\n    [<00000000231c5bb1>] driver_probe_device+0x24/0xf0\n    [<0000000000a42377>] __driver_attach+0x77/0x190\n    [<00000000d7574da6>] bus_for_each_dev+0x7f/0xd0\n    [<00000000633166d2>] driver_attach+0x1e/0x30\n    [<00000000313b05b8>] bus_add_driver+0x12c/0x1e0\n\niio was allocated in atom_index_iio() called by atom_parse(),\nbut it doesn't got released when the dirver is shutdown.\nFix this kmemleak by free it in radeon_atombios_fini().\n\n## Affected\n\n- `Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < cb109cedbba11c33473e6780c256d8442a9e4460`\n- `Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < 9cdb96b55651c92fc949cfd54124406c3c912b6b`\n- `Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < f9f55fc64928b5e30d78f861c5fc76db9e769ebb`\n- `Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < ce9e9d3dcbb0d1551ffd1a7f16e7c051f3ba4140`\n- `Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < cda2f7efbc2d857220dad32e315a54565b285c1c`\n- `Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < 107b8b542bb9dab4cbdc3276c85fbdd7f6782313`\n- `Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < e2791f2f4d1d804e45fa91b14295c326b64c65f1`\n- `Linux >= 771fe6b912fca54f03e8a72eb63058b582775362 < 4773fadedca918faec443daaca5e4ea1c0ced144`\n- `Linux 2.6.31`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}