243 lines
13 KiB
JSON
243 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-89883",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-11T19:38:34.772Z",
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"datePublished": "2026-09-16T10:31:48.378Z",
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"dateUpdated": "2026-10-19T08:54:16.454Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T08:54:16.454Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: rc: sunxi-cir: Unregister rc device on probe failure\n\nAfter rc_register_device() succeeds, later probe failures must undo the\nregistration with rc_unregister_device(). The current error path jumps to\nthe allocation cleanup label and only calls rc_free_device(), leaving the\nrc device registration and resources created by rc_register_device()\nbehind.\n\nAdd a registered-device unwind label for the IRQ lookup, IRQ request, and\nhardware initialization failure paths. Keep rc_free_device() for failures\nbefore rc_register_device() succeeds."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The bug is in sunxi_ir_probe() of the Allwinner CIR platform driver; after a failed probe the leftover rc-core/lirc/input device is reached by opening local /dev/lirc* or /dev/input/event* nodes, not via network packets, Bluetooth, or IR/USB injection.\nAC:L - After rc_register_device() succeeds, IRQ lookup (including -EPROBE_DEFER), request_irq, or sunxi_ir_hw_init failure calls only rc_free_device(); once the leaked rc/lirc node exists, LIRC_SET_REC_TIMEOUT and similar ioctls deterministically use dangling rc_dev->priv with no attacker-uncontrollable race.\nPR:L - A low-privileged local user who can open the leaked /dev/lirc* or input event node (typical input-group/udev access on Allwinner STBs, tablets, and SBCs) can ioctl the leftover rc device; bind/unbind is CAP_SYS_ADMIN, but the higher-severity scenario is exploiting an already leaked node.\nUI:N - The attacker opens the leftover lirc or input device and issues ioctls themselves; no victim must mount a filesystem, plug a device, or otherwise interact.\nS:U - Use-after-free of the probe-owned sunxi_ir object and leftover rc-core state stays in the host kernel and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - Failed probe leaves the rc device registered while devres frees the sunxi_ir object that rc_dev->priv still points at, a slab use-after-free; per kernel CVSS guidance that primitive enables arbitrary kernel read.\nI:H - sunxi_ir_set_timeout() performs CIR MMIO writes through freed ir->base, and leftover s_timeout/ir_raw callbacks can be redirected after heap reuse, yielding arbitrary write and control-flow hijack.\nA:H - Using the leftover lirc/input node dereferences freed sunxi_ir state or writes unmapped CIR MMIO, causing kernel oops/panic; any use-after-free is high availability impact."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/media/rc/sunxi-cir.c"
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],
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"versions": [
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{
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"version": "b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f",
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"lessThan": "4655a591478e4b31a3396695a2457daad9d4c899",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f",
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"lessThan": "4efd7146dcf959afe64e9c51531cd8f82e60eab6",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f",
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"lessThan": "826763adbd8bd3137c5b3756650da473dc6216d5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f",
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"lessThan": "59951b8a87ef4fb4b5b9409f70ba07663681a040",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f",
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"lessThan": "5b58d8c206f37525c8217171e1f3e91dd2fa55e5",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f",
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"lessThan": "5e6f5bffaa80fc8ecce348ec0e34fed9d843e47e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f",
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"lessThan": "479aa6fa8c50f1052f1451326ef7d4d586d340c3",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/media/rc/sunxi-cir.c"
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],
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"versions": [
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{
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"version": "3.17",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "3.17",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.221",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.188",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.157",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.110",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.51",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2.5",
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"lessThanOrEqual": "7.2.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.3",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.17",
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"versionEndExcluding": "5.15.221"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.17",
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"versionEndExcluding": "6.1.188"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.17",
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"versionEndExcluding": "6.6.157"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.17",
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"versionEndExcluding": "6.12.110"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.17",
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"versionEndExcluding": "6.18.51"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.17",
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"versionEndExcluding": "7.2.5"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.17",
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"versionEndExcluding": "7.3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/4655a591478e4b31a3396695a2457daad9d4c899"
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},
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{
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"url": "https://git.kernel.org/stable/c/4efd7146dcf959afe64e9c51531cd8f82e60eab6"
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},
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{
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"url": "https://git.kernel.org/stable/c/826763adbd8bd3137c5b3756650da473dc6216d5"
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},
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{
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"url": "https://git.kernel.org/stable/c/59951b8a87ef4fb4b5b9409f70ba07663681a040"
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},
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{
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"url": "https://git.kernel.org/stable/c/5b58d8c206f37525c8217171e1f3e91dd2fa55e5"
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},
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{
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"url": "https://git.kernel.org/stable/c/5e6f5bffaa80fc8ecce348ec0e34fed9d843e47e"
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},
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{
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"url": "https://git.kernel.org/stable/c/479aa6fa8c50f1052f1451326ef7d4d586d340c3"
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}
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],
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"title": "media: rc: sunxi-cir: Unregister rc device on probe failure",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |