175 lines
9.4 KiB
JSON
175 lines
9.4 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-2026-31475",
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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": "2026-03-09T15:48:24.098Z",
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"datePublished": "2026-04-22T13:54:04.113Z",
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"dateUpdated": "2026-08-05T12:22:53.935Z"
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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": "2026-08-05T12:22:53.935Z"
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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\nASoC: sma1307: fix double free of devm_kzalloc() memory\n\nA previous change added NULL checks and cleanup for allocation\nfailures in sma1307_setting_loaded().\n\nHowever, the cleanup for mode_set entries is wrong. Those entries are\nallocated with devm_kzalloc(), so they are device-managed resources and\nmust not be freed with kfree(). Manually freeing them in the error path\ncan lead to a double free when devres later releases the same memory.\n\nDrop the manual kfree() loop and let devres handle the cleanup."
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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 path is reachable locally through the ALSA control ioctl for the SMA1307 \"Reset Switch\", which calls `sma1307_reset()` and then `sma1307_setting_loaded()`. There is no network, Bluetooth, WiFi, or other remote packet path to this I2C audio codec driver.\nAC:L - Once an affected SMA1307 device and setting firmware are present, an attacker can repeatedly invoke the reset control to drive the firmware-loading allocations until the `mode_set` allocation failure path is reached. The attacker influences the memory-pressure condition and there is no race requiring victim-controlled timing.\nPR:L - The ioctl path requires local access to the ALSA control device, but the kernel control write path does not require CAP_SYS_ADMIN or real root. This is consistent with a basic local user who has access to the sound card controls.\nUI:N - The attacker can trigger the reset control directly via an ioctl. No separate victim action is required.\nS:U - The corruption occurs in kernel memory within the same host kernel security authority. It does not cross a VM, IOMMU, or similar security boundary.\nC:H - The bug frees devm-managed heap memory with the wrong API, leaving stale devres ownership and creating a double-free/use-after-free style kernel heap corruption condition. Such corruption can reasonably be leveraged for kernel memory disclosure.\nI:H - Kernel heap double-free/use-after-free corruption can be shaped into arbitrary write or control-flow corruption. Under the required overestimation rule, integrity impact is High.\nA:H - The invalid/double free can trigger allocator corruption, kernel warnings/oopses, or panic during the error path or later devres release. Repeated triggering can therefore cause full kernel availability loss."
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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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"sound/soc/codecs/sma1307.c"
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],
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"versions": [
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{
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"version": "0ec6bd16705fe21d6429d6b8f7981eae2142bba8",
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"lessThan": "d472d1a52985211b92883bb64bbe710b45980190",
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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": "0ec6bd16705fe21d6429d6b8f7981eae2142bba8",
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"lessThan": "1a82c3272626db9006f4c2cad3adf2916417aed6",
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"status": "affected",
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"versionType": "git"
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{
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"status": "affected",
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},
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{
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"version": "f8434b8ba437d3f6cbcd9ffe8405bd16ed28fc5c",
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"status": "affected",
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},
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{
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"version": "6.14.9",
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"lessThan": "6.15",
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"status": "affected",
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"versionType": "semver"
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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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"sound/soc/codecs/sma1307.c"
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],
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"versions": [
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{
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"status": "affected"
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{
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"version": "0",
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"lessThan": "6.15",
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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": "6.18.21",
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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": "6.19.11",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.15",
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"versionEndExcluding": "6.18.21"
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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/d472d1a52985211b92883bb64bbe710b45980190"
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},
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{
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"url": "https://git.kernel.org/stable/c/1a82c3272626db9006f4c2cad3adf2916417aed6"
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},
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{
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"url": "https://git.kernel.org/stable/c/fe757092d2329c397ecb32f2bf68a5b1c4bd9193"
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}
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],
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"title": "ASoC: sma1307: fix double free of devm_kzalloc() memory",
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