206 lines
10 KiB
JSON
206 lines
10 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-2026-98677",
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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": "2026-09-25T10:25:14.363Z",
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"datePublished": "2026-10-18T15:45:33.871Z",
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"dateUpdated": "2026-10-30T12:38:40.900Z"
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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": "2026-10-30T12:38:40.900Z"
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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\niio: adc: ad_sigma_delta: fix use-after-free on unbind\n\nad_sd_buffer_postenable() allocates sigma_delta->samples_buf with\ndevm_krealloc() at runtime, so its devres entry sits after all\nprobe-time entries of the driver. devm resources are released in\nreverse allocation order, which means unbind frees samples_buf before\niio_device_unregister() disables the buffers and detaches the trigger\npollfunc. The data ready IRQ is still enabled at that point, so\nad_sd_trigger_handler() can still run and memcpy() incoming samples\ninto the freed samples_buf.\n\nFix this by preallocating the buffer in\ndevm_ad_sd_setup_buffer_and_trigger(), before the triggered buffer and\nthe IRQ are set up, so it is freed only after iio_device_unregister()\nhas drained the trigger handler via free_irq(). Size it for the worst\ncase of all sequencer slots being active; ad_sd_validate_scan_mask()\nalready caps the number of active channels at num_slots.\n\nThis issue was found by an in-house static analysis tool."
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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/iio/adc/ad_sigma_delta.c"
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],
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"versions": [
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{
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"version": "8bea9af887de4c99a95f93f2ce400ef63e8b4e9b",
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"lessThan": "b2a991d33f1e2207052fe745d1fe459db8b365e2",
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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": "8bea9af887de4c99a95f93f2ce400ef63e8b4e9b",
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"lessThan": "975b09bc680acc60903777b766cdb53b0bf9c9f6",
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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": "8bea9af887de4c99a95f93f2ce400ef63e8b4e9b",
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"lessThan": "84500ae0d976995a6870cb1dca2d124b6b2d6e5a",
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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": "8bea9af887de4c99a95f93f2ce400ef63e8b4e9b",
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"lessThan": "f20b94a7dc1ff9ade191ce839c984210fdbdc653",
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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": "8bea9af887de4c99a95f93f2ce400ef63e8b4e9b",
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"lessThan": "5663c72bf400231e90777982216797191887a6b9",
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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": "8bea9af887de4c99a95f93f2ce400ef63e8b4e9b",
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"lessThan": "9ee8306121495d2a25aa5d1bfd519f2748786b83",
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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/iio/adc/ad_sigma_delta.c"
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],
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"versions": [
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{
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"version": "5.19",
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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": "5.19",
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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": "6.1.191",
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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": "6.6.160",
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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": "6.12.113",
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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": "6.18.56",
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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": "7.2.10",
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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": "5.19",
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"versionEndExcluding": "6.1.191"
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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": "5.19",
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"versionEndExcluding": "6.6.160"
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},
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"versionStartIncluding": "5.19",
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"versionStartIncluding": "5.19",
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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/b2a991d33f1e2207052fe745d1fe459db8b365e2"
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},
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{
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"url": "https://git.kernel.org/stable/c/975b09bc680acc60903777b766cdb53b0bf9c9f6"
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},
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{
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"url": "https://git.kernel.org/stable/c/84500ae0d976995a6870cb1dca2d124b6b2d6e5a"
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},
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{
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"url": "https://git.kernel.org/stable/c/f20b94a7dc1ff9ade191ce839c984210fdbdc653"
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},
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{
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"url": "https://git.kernel.org/stable/c/5663c72bf400231e90777982216797191887a6b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/9ee8306121495d2a25aa5d1bfd519f2748786b83"
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}
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],
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"title": "iio: adc: ad_sigma_delta: fix use-after-free on unbind",
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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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} |