201 lines
11 KiB
JSON
201 lines
11 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-2026-53386",
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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": "2026-06-09T07:44:35.402Z",
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"datePublished": "2026-07-19T11:59:33.318Z",
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"dateUpdated": "2026-08-17T04:50:37.100Z"
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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": "2026-08-17T04:50:37.100Z"
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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: ti-ads1298: add bounds check to pga_settings index\n\nads1298_pga_settings has 7 elements but ADS1298_MASK_CH_PGA can yield\nvalues 0-7. If it yields a value >= 7, this causes an out-of-bounds\narray access. Add a bounds check and return -EINVAL if the index\nis out of range.\n\nNote that the remaining value b111 is reserved so should not be seen\nin a correctly functioning system."
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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 vulnerable code is reached via local IIO sysfs reads of the channel scale attribute (e.g. /sys/bus/iio/devices/iio:deviceN/in_voltageX_scale), which flows through read(2) into ads1298_get_scale(); this is not reachable over any network protocol.\nAC:L - Once the CHnSET register contains reserved PGA encoding 111 (index 7), reading the scale attribute deterministically triggers the out-of-bounds access; a privileged attacker can reliably prime this state via debugfs direct_reg_access writes to CHnSET before the sysfs read.\nPR:L - The IIO scale sysfs attributes are world-readable (mode 0444), so any unprivileged local user can invoke ads1298_get_scale without elevated capabilities; no user namespace or real-root capability is required to reach the vulnerable code path.\nUI:N - Exploitation requires only the attacker's own read of a sysfs attribute or debugfs register write; no action by a separate victim user is needed.\nS:U - The out-of-bounds read and any resulting kernel fault occur entirely within kernel space on the same host; there is no crossing of VM, container, or IOMMU security boundaries.\nC:H - The bug is a one-byte out-of-bounds read past the end of the static ads1298_pga_settings array in kernel memory, leaking adjacent .rodata contents into kernel arithmetic used to compute the scale value.\nI:H - The out-of-bounds byte is consumed as the PGA gain divisor in kernel arithmetic, corrupting the computed scale and potentially causing a division-by-zero if the leaked value is zero, affecting kernel execution integrity.\nA:H - If the out-of-bounds read yields a zero gain value, the subsequent integer division in ads1298_get_scale causes a kernel divide-by-zero fault; any resulting kernel oops or panic constitutes total loss of availability."
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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/iio/adc/ti-ads1298.c"
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],
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"versions": [
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{
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"version": "00ef7708fa6073a84f6898fdcdfe965d903b0378",
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"lessThan": "d5793975fc3b1780ba576812158ef22e3104e60e",
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"status": "affected",
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"versionType": "git"
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},
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"lessThan": "d08d82d83ed45fd8c001a9df66ad7ebb86c9d6c6",
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"status": "affected",
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"status": "affected",
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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/ti-ads1298.c"
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],
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"versions": [
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{
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"version": "6.9",
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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": "6.9",
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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": "6.12.95",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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},
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{
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"version": "6.18.37",
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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": "7.0.14",
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"lessThanOrEqual": "7.0.*",
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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": "7.1.2",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/d5793975fc3b1780ba576812158ef22e3104e60e"
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},
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{
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"url": "https://git.kernel.org/stable/c/d08d82d83ed45fd8c001a9df66ad7ebb86c9d6c6"
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},
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{
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"url": "https://git.kernel.org/stable/c/abe0854e356b1bb814393ca884cb42b3eb12ce10"
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{
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"url": "https://git.kernel.org/stable/c/abd776ded3e256889610595290f6ca46cb6e91ab"
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{
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"url": "https://git.kernel.org/stable/c/95e8a48d7a85d4226934020e57815a3316d3a14b"
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}
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],
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"title": "iio: adc: ti-ads1298: add bounds check to pga_settings index",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |