159 lines
8.8 KiB
JSON
159 lines
8.8 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-2025-40045",
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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": "2025-04-16T07:20:57.154Z",
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"datePublished": "2025-10-28T11:48:23.431Z",
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"dateUpdated": "2026-08-05T12:07:18.382Z"
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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": "2026-08-05T12:07:18.382Z"
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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: codecs: wcd937x: set the comp soundwire port correctly\n\nFor some reason we endup with setting soundwire port for\nHPHL_COMP and HPHR_COMP as zero, this can potentially result\nin a memory corruption due to accessing and setting -1 th element of\nport_map array."
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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 only through an ALSA control-element write ioctl (SNDRV_CTL_IOCTL_ELEM_WRITE) on /dev/snd/controlC*, which requires local access to the device node. There is no network or remote-peer input path into wcd937x_set_compander().\nAC:L - A single ioctl writing a toggled value to \"HPHL_COMP Switch\" or \"HPHR_COMP Switch\" deterministically drives mc->reg == -1 into the ch_info[] index and the u8 truncation to 255, with no race, timing window, or unpredictable precondition. The out-of-bounds indices and written values derive from fixed module .data content, so they are identical on every boot of a given build.\nPR:L - No capability check exists on the path; the attacker only needs write access to the sound card's control node, which unprivileged desktop/embedded users hold via the audio group or logind ACLs and which the audio HAL holds on Android. Per the higher-severity rule this is Low rather than High.\nUI:N - The attacker performs the control write entirely on its own; no victim must open a file, mount anything, or interact with audio in any way. The codec controls are registered as soon as the WCD937x component probes.\nS:U - The out-of-bounds accesses corrupt kernel heap memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The path performs multiple unbounded reads — ch_info[-1], ch_info[255] roughly 3 KB past a 96-byte array, and sdw_slave->m_port_map[] indexed by an attacker-unbounded u8 — and the resulting heap out-of-bounds writes constitute memory corruption that can be leveraged for arbitrary read, so High applies.\nI:H - Two out-of-bounds writes occur past the small devm_kzalloc'd wcd937x_sdw_priv object (port_config[port_idx-1].num up to ~2 KB beyond, master_channel_map[mstr_port_num] up to ~1 KB beyond), corrupting adjacent slab objects with build-deterministic offsets — a heap write primitive suitable for control-flow hijacking.\nA:H - Out-of-bounds slab writes corrupt neighbouring allocations and readily produce KASAN reports, slab metadata damage, and kernel oops/panic; the far OOB read may also touch unmapped memory. Any kernel crash is scored High."
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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/wcd937x.c"
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],
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"versions": [
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{
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"version": "82be8c62a38c6a44e64ecb29d7a9b5cb35c6cad4",
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"lessThan": "abcd537aae3b84c6d10ad147e99a204bcb56b234",
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"status": "affected",
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"versionType": "git"
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},
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{
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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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"sound/soc/codecs/wcd937x.c"
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],
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"versions": [
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{
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"version": "6.11",
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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": "6.11",
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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": "6.12.53",
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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": "6.17.3",
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"lessThanOrEqual": "6.17.*",
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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": "6.18",
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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": "6.11",
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"versionEndExcluding": "6.12.53"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/abcd537aae3b84c6d10ad147e99a204bcb56b234"
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},
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{
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"url": "https://git.kernel.org/stable/c/1a1ca38392e7e896075afc8905ddaea525ed30f7"
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},
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{
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"url": "https://git.kernel.org/stable/c/66a940b1bf48a7095162688332d725ba160154eb"
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}
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],
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"title": "ASoC: codecs: wcd937x: set the comp soundwire port correctly",
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