{"id":"CVE-2026-98501","title":"HID: alps: fix use-after-free on input2 registration failure","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: alps: fix use-after-free on input2 registration failure\n\nalps_input_configured() stores data->input2 before calling\ninput_register_device().  If registration fails…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 64f824dccfd316fd3db8ea1cc4e8a76ad6a02740","Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 2e55d76e6e8a756f6d87c241de975599f82b02fa","Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b","Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 5a8ad63158165bacd6a1d7420e0fe5364c913b06","Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 47e5e177e9e4e10da6f2759d5ce8d049e33efdc4","Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 925da1d2a24787f24872de13a4680437c54de179","Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 443f6b93442b10b972a16f57ceaaea75b77892b6","Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < d3aba3442798ce4a4c8ce3104d7b286d61e605f9","Linux 4.8"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:16:46.205Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98501","references":[{"url":"https://git.kernel.org/stable/c/64f824dccfd316fd3db8ea1cc4e8a76ad6a02740"},{"url":"https://git.kernel.org/stable/c/2e55d76e6e8a756f6d87c241de975599f82b02fa"},{"url":"https://git.kernel.org/stable/c/ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b"},{"url":"https://git.kernel.org/stable/c/5a8ad63158165bacd6a1d7420e0fe5364c913b06"},{"url":"https://git.kernel.org/stable/c/47e5e177e9e4e10da6f2759d5ce8d049e33efdc4"},{"url":"https://git.kernel.org/stable/c/925da1d2a24787f24872de13a4680437c54de179"},{"url":"https://git.kernel.org/stable/c/443f6b93442b10b972a16f57ceaaea75b77892b6"},{"url":"https://git.kernel.org/stable/c/d3aba3442798ce4a4c8ce3104d7b286d61e605f9"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T15:45:12.288Z","slug":"CVE-2026-98501","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nHID: alps: fix use-after-free on input2 registration failure\n\nalps_input_configured() stores data->input2 before calling\ninput_register_device().  If registration fails, input_free_device()\nfrees the input device but data->input2 still points to the freed memory.\nalps_input_configured() calls hid_hw_open() before allocating input2, so\nURBs are already active and raw_event can fire during the failure window.\nA U1_SP_ABSOLUTE_REPORT_ID report arriving then causes u1_raw_event()\nto dereference the freed data->input2 -> use-after-free.\n\nFix by only storing input2 into drvdata after successful registration\nand adding a NULL guard in the raw_event path.\n\n## Affected\n\n- `Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 64f824dccfd316fd3db8ea1cc4e8a76ad6a02740`\n- `Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 2e55d76e6e8a756f6d87c241de975599f82b02fa`\n- `Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < ef8ca5bb4c8b9696f38b1bebce1c851baa02b77b`\n- `Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 5a8ad63158165bacd6a1d7420e0fe5364c913b06`\n- `Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 47e5e177e9e4e10da6f2759d5ce8d049e33efdc4`\n- `Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 925da1d2a24787f24872de13a4680437c54de179`\n- `Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < 443f6b93442b10b972a16f57ceaaea75b77892b6`\n- `Linux >= 2562756dde550901c224e3805102bdfc17e7d13a < d3aba3442798ce4a4c8ce3104d7b286d61e605f9`\n- `Linux 4.8`\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":[]}