{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-89900", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.774Z", "datePublished": "2026-09-16T10:32:00.289Z", "dateUpdated": "2026-10-19T08:54:33.144Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:54:33.144Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: core: Fix kmemleak due to missed rc_free_device() call\n\nThe commit dccc0c3ddf8f (\"media: rc: fix race between unregister and\nurb/irq callbacks\") removed the implicit call to rc_free_device() from\nrc_unregister_device(). However, the commit missed to remove the NULL\nassignment of adap->rc that is now causing rc_free_device() to never be\ncalled on an allocated rc device.\n\nkmemleak reports following after e.g. dw-hdmi unbind:\n\nunreferenced object 0xffff00010ac10000 (size 4096):\n comm \"kworker/u16:1\", pid 39, jiffies 4294897739\n hex dump (first 32 bytes):\n 20 23 4b 0a 01 00 ff ff 08 00 c1 0a 01 00 ff ff #K.............\n 08 00 c1 0a 01 00 ff ff 00 00 00 00 00 00 00 00 ................\n backtrace (crc e11baccc):\n kmemleak_alloc+0x38/0x44\n __kmalloc_cache_noprof+0x4a8/0x5e0\n rc_allocate_device+0x48/0x2a0\n cec_allocate_adapter+0x3ac/0x800\n dw_hdmi_cec_probe+0x264/0x634\n platform_probe+0xc0/0x188\n really_probe+0x4a4/0x8e0\n __driver_probe_device+0x2f8/0x440\n driver_probe_device+0x60/0x160\n __device_attach_driver+0x1a0/0x2a0\n bus_for_each_drv+0x100/0x1a0\n __device_attach+0x174/0x350\n device_initial_probe+0x90/0xb0\n bus_probe_device+0x4c/0x120\n device_add+0xdec/0x116c\n platform_device_add+0x354/0x598\n\nRemove the assignment of adap->rc to NULL to let cec_delete_adapter()\nfree the allocated rc device after last user of the cec device exits to\nfix the kmemleak." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/media/cec/core/cec-core.c" ], "versions": [ { "version": "a7becb58f6b8a3a3efe5d3acfd52e2c107de6772", "lessThan": "954ee95a03b4d31d4505591bfaba02c24b75776b", "status": "affected", "versionType": "git" }, { "version": "75977f5f5c4974c72bbedefbf09ad33ebbaa36f1", "lessThan": "f28a8e1ba4d67a18e4662e5acefd5a4389322366", "status": "affected", "versionType": "git" }, { "version": "e250b672d40a9e0d97a8895cbb301248bea0fce6", "lessThan": "695063fc57574dd117b1bc750ca189cf03a2caad", "status": "affected", "versionType": "git" }, { "version": "dccc0c3ddf8f16071736f98a7d6dd46a2d43e037", "lessThan": "cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c", "status": "affected", "versionType": "git" }, { "version": "dccc0c3ddf8f16071736f98a7d6dd46a2d43e037", "lessThan": "a24ba0653f7154e671dc8d2bf64682ab2d042792", "status": "affected", "versionType": "git" }, { "version": "6.6.143", "lessThan": "6.6.157", "status": "affected", "versionType": "semver" }, { "version": "6.12.93", "lessThan": "6.12.110", "status": "affected", "versionType": "semver" }, { "version": "6.18.35", "lessThan": "6.18.51", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/media/cec/core/cec-core.c" ], "versions": [ { "version": "7.1", "status": "affected" }, { "version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.51", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.5", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.143", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.93", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.35", "versionEndExcluding": "6.18.51" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/954ee95a03b4d31d4505591bfaba02c24b75776b" }, { "url": "https://git.kernel.org/stable/c/f28a8e1ba4d67a18e4662e5acefd5a4389322366" }, { "url": "https://git.kernel.org/stable/c/695063fc57574dd117b1bc750ca189cf03a2caad" }, { "url": "https://git.kernel.org/stable/c/cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c" }, { "url": "https://git.kernel.org/stable/c/a24ba0653f7154e671dc8d2bf64682ab2d042792" } ], "title": "media: cec: core: Fix kmemleak due to missed rc_free_device() call", "x_generator": { "engine": "bippy-1.2.0" } } } }