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-2026-89466",
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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": "2026-09-11T19:38:34.709Z",
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"datePublished": "2026-09-11T19:43:26.621Z",
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"dateUpdated": "2026-10-19T08:47:15.439Z"
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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": "2026-10-19T08:47:15.439Z"
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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\npower: supply: qcom_battmgr: terminate the strings from firmware\n\nThe qcom_battmgr_sc8280xp_strcpy() takes a Pascal-style string when the\nfirmware sends one. Otherwise it copies all BATTMGR_STRING_LEN bytes and\nleaves the destination without a terminator.\n\nThose destinations are model_number, serial_number and oem_info, each\nBATTMGR_STRING_LEN and declared next to each other. They go out to user\nspace as val->strval, which power_supply_format_property() prints with\n\"%s\", so a firmware string that fills the whole field makes that read run\ninto the following members.\n\nUse strscpy() so the copy always terminates, the way the SM8350 path\nalready does for the same field."
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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:N/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.7,
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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 unterminated copies run in qcom_battmgr_sc8280xp_callback() on BATTMGR_BAT_INFO payloads received over on-SoC PMIC GLINK/rpmsg from the Qualcomm ADSP/SOCCP (PMIC_RTR_ADSP_APPS), not from a network protocol, Bluetooth, or a pluggable USB device.\nAC:L - Firmware fully controls the 128-byte model_number, serial_number, and oem_info fields; sending 128 non-NUL bytes (or a first byte that is not a Pascal length) always takes the memcpy() path that omits the terminator, with no race or attacker-uncontrollable layout.\nPR:N - pmic_glink_rpmsg_callback delivers ADSP/SOCCP payloads to qcom_battmgr_callback with no Linux credential or capability check, so compromised PMIC firmware can send BATTMGR_BAT_INFO and NOTIF_BAT_INFO without a host account.\nUI:N - Battery-info parsing and power_supply_changed() uevents run from the GLINK response/notification path and from automatic sysfs/uevent reads at boot; no victim must open a file, mount a filesystem, or take any other action.\nS:U - The over-read stays in host kernel memory around struct qcom_battmgr in the same OS security authority; this is ordinary kernel disclosure or denial of service, not a VM escape, IOMMU bypass, or sandbox breakout.\nC:H - Unterminated model_number, serial_number, and oem_info are printed with %s via world-readable power_supply sysfs and uevents; kernel vsnprintf scans until a NUL, an unbounded out-of-bounds read of adjacent kernel fields and pointers.\nI:N - qcom_battmgr_sc8280xp_strcpy() copies exactly BATTMGR_STRING_LEN bytes into same-sized destinations; the defect is a missing terminator that causes over-reads, not an out-of-bounds write, use-after-free, or control-flow hijack primitive.\nA:H - Unbounded %s scanning of those unterminated fields can walk past the kmalloc-backed qcom_battmgr object into unmapped pages, causing a kernel oops or panic, and firmware can retrigger the path through GLINK notifications."
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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/power/supply/qcom_battmgr.c"
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],
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"versions": [
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{
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"version": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
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"lessThan": "c06028db620854b11ad81b04b0a4e1ead930cb76",
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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": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
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"lessThan": "0e70a9b0d16acf7adebc4f386178a95da27c0027",
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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": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
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"lessThan": "ee053561e21ce1e1741dd64ca5ddcdb92e40edc1",
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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": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
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"lessThan": "6cc6c28c9ab6e8ecf901397717a5b391b828cdaf",
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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": "29e8142b5623b5949587bcc4f591c4e6595c4aca",
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"lessThan": "ab1112df8f4ffa88cb024dd370c432ced80f77d8",
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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/power/supply/qcom_battmgr.c"
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],
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"versions": [
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{
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"version": "6.3",
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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": "6.3",
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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": "6.12.109",
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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": "6.18.50",
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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": "7.2.4",
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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": "6.3",
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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": "6.3",
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"versionEndExcluding": "6.12.109"
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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": "6.3",
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"versionEndExcluding": "6.18.50"
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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": "6.3",
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"versionEndExcluding": "7.2.4"
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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": "6.3",
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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/c06028db620854b11ad81b04b0a4e1ead930cb76"
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},
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{
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"url": "https://git.kernel.org/stable/c/0e70a9b0d16acf7adebc4f386178a95da27c0027"
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},
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{
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"url": "https://git.kernel.org/stable/c/ee053561e21ce1e1741dd64ca5ddcdb92e40edc1"
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},
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{
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"url": "https://git.kernel.org/stable/c/6cc6c28c9ab6e8ecf901397717a5b391b828cdaf"
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},
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{
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"url": "https://git.kernel.org/stable/c/ab1112df8f4ffa88cb024dd370c432ced80f77d8"
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}
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],
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"title": "power: supply: qcom_battmgr: terminate the strings from firmware",
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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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} |