{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53578", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-04T15:14:15.926Z", "datePublished": "2025-10-04T15:17:17.350Z", "dateUpdated": "2026-05-11T19:47:46.809Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:47:46.809Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()\n\nSyzbot reported a bug as following:\n\n=====================================================\nBUG: KMSAN: uninit-value in qrtr_tx_resume+0x185/0x1f0 net/qrtr/af_qrtr.c:230\n qrtr_tx_resume+0x185/0x1f0 net/qrtr/af_qrtr.c:230\n qrtr_endpoint_post+0xf85/0x11b0 net/qrtr/af_qrtr.c:519\n qrtr_tun_write_iter+0x270/0x400 net/qrtr/tun.c:108\n call_write_iter include/linux/fs.h:2189 [inline]\n aio_write+0x63a/0x950 fs/aio.c:1600\n io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019\n __do_sys_io_submit fs/aio.c:2078 [inline]\n __se_sys_io_submit+0x293/0x770 fs/aio.c:2048\n __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nUninit was created at:\n slab_post_alloc_hook mm/slab.h:766 [inline]\n slab_alloc_node mm/slub.c:3452 [inline]\n __kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491\n __do_kmalloc_node mm/slab_common.c:967 [inline]\n __kmalloc_node_track_caller+0x114/0x3b0 mm/slab_common.c:988\n kmalloc_reserve net/core/skbuff.c:492 [inline]\n __alloc_skb+0x3af/0x8f0 net/core/skbuff.c:565\n __netdev_alloc_skb+0x120/0x7d0 net/core/skbuff.c:630\n qrtr_endpoint_post+0xbd/0x11b0 net/qrtr/af_qrtr.c:446\n qrtr_tun_write_iter+0x270/0x400 net/qrtr/tun.c:108\n call_write_iter include/linux/fs.h:2189 [inline]\n aio_write+0x63a/0x950 fs/aio.c:1600\n io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019\n __do_sys_io_submit fs/aio.c:2078 [inline]\n __se_sys_io_submit+0x293/0x770 fs/aio.c:2048\n __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIt is because that skb->len requires at least sizeof(struct qrtr_ctrl_pkt)\nin qrtr_tx_resume(). And skb->len equals to size in qrtr_endpoint_post().\nBut size is less than sizeof(struct qrtr_ctrl_pkt) when qrtr_cb->type\nequals to QRTR_TYPE_RESUME_TX in qrtr_endpoint_post() under the syzbot\nscenario. This triggers the uninit variable access bug.\n\nAdd size check when qrtr_cb->type equals to QRTR_TYPE_RESUME_TX in\nqrtr_endpoint_post() to fix the bug."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/qrtr/af_qrtr.c"], "versions": [{"version": "5fdeb0d372ab33b4175043a2a4a1730239a217f1", "lessThan": "3814d211ff13ee35f2d9437439a6c7df58524137", "status": "affected", "versionType": "git"}, {"version": "5fdeb0d372ab33b4175043a2a4a1730239a217f1", "lessThan": "c6a796ee5a639ffb83c6e5469408cc2ec16cac6a", "status": "affected", "versionType": "git"}, {"version": "5fdeb0d372ab33b4175043a2a4a1730239a217f1", "lessThan": "bef57c227b52c2bde00fad33556175d36d12cfa0", "status": "affected", "versionType": "git"}, {"version": "5fdeb0d372ab33b4175043a2a4a1730239a217f1", "lessThan": "8c9ce34a6ff2c544f96ce0b088e8fd3c1b9698c4", "status": "affected", "versionType": "git"}, {"version": "5fdeb0d372ab33b4175043a2a4a1730239a217f1", "lessThan": "6417070918de3bcdbe0646e7256dae58fd8083ba", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/qrtr/af_qrtr.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.178", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.108", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.25", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.12", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.10.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.15.108"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.1.25"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.2.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3814d211ff13ee35f2d9437439a6c7df58524137"}, {"url": "https://git.kernel.org/stable/c/c6a796ee5a639ffb83c6e5469408cc2ec16cac6a"}, {"url": "https://git.kernel.org/stable/c/bef57c227b52c2bde00fad33556175d36d12cfa0"}, {"url": "https://git.kernel.org/stable/c/8c9ce34a6ff2c544f96ce0b088e8fd3c1b9698c4"}, {"url": "https://git.kernel.org/stable/c/6417070918de3bcdbe0646e7256dae58fd8083ba"}], "title": "net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D24F41C8-D72D-442C-8122-DD0C7229CC1F", "versionEndExcluding": "5.10.178", "versionStartIncluding": "5.6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "12E7A5F9-38FA-429F-A165-975A914E6666", "versionEndExcluding": "5.15.108", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A6E5D96B-E06F-4EB1-B0AA-BB8F5E9187E0", "versionEndExcluding": "6.1.25", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4AA01E0B-227C-4686-AC91-BA30BCC48E6D", "versionEndExcluding": "6.2.12", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc1:*:*:*:*:*:*", "matchCriteriaId": "B8E3B0E8-FA27-4305-87BB-AF6C25B160CB", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc2:*:*:*:*:*:*", "matchCriteriaId": "A47F0FC3-CE52-4BA1-BA51-22F783938431", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:*", "matchCriteriaId": "3583026A-27EC-4A4C-850A-83F2AF970673", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:*", "matchCriteriaId": "DC271202-7570-4505-89A4-D602D47BFD00", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:*", "matchCriteriaId": "D413BB6D-4F74-4C7D-9163-47786619EF53", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.3:rc6:*:*:*:*:*:*", "matchCriteriaId": "F4D613FB-9976-4989-8C4A-567773373CEA", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()\n\nSyzbot reported a bug as following:\n\n=====================================================\nBUG: KMSAN: uninit-value in qrtr_tx_resume+0x185/0x1f0 net/qrtr/af_qrtr.c:230\n qrtr_tx_resume+0x185/0x1f0 net/qrtr/af_qrtr.c:230\n qrtr_endpoint_post+0xf85/0x11b0 net/qrtr/af_qrtr.c:519\n qrtr_tun_write_iter+0x270/0x400 net/qrtr/tun.c:108\n call_write_iter include/linux/fs.h:2189 [inline]\n aio_write+0x63a/0x950 fs/aio.c:1600\n io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019\n __do_sys_io_submit fs/aio.c:2078 [inline]\n __se_sys_io_submit+0x293/0x770 fs/aio.c:2048\n __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nUninit was created at:\n slab_post_alloc_hook mm/slab.h:766 [inline]\n slab_alloc_node mm/slub.c:3452 [inline]\n __kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491\n __do_kmalloc_node mm/slab_common.c:967 [inline]\n __kmalloc_node_track_caller+0x114/0x3b0 mm/slab_common.c:988\n kmalloc_reserve net/core/skbuff.c:492 [inline]\n __alloc_skb+0x3af/0x8f0 net/core/skbuff.c:565\n __netdev_alloc_skb+0x120/0x7d0 net/core/skbuff.c:630\n qrtr_endpoint_post+0xbd/0x11b0 net/qrtr/af_qrtr.c:446\n qrtr_tun_write_iter+0x270/0x400 net/qrtr/tun.c:108\n call_write_iter include/linux/fs.h:2189 [inline]\n aio_write+0x63a/0x950 fs/aio.c:1600\n io_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019\n __do_sys_io_submit fs/aio.c:2078 [inline]\n __se_sys_io_submit+0x293/0x770 fs/aio.c:2048\n __x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIt is because that skb->len requires at least sizeof(struct qrtr_ctrl_pkt)\nin qrtr_tx_resume(). And skb->len equals to size in qrtr_endpoint_post().\nBut size is less than sizeof(struct qrtr_ctrl_pkt) when qrtr_cb->type\nequals to QRTR_TYPE_RESUME_TX in qrtr_endpoint_post() under the syzbot\nscenario. This triggers the uninit variable access bug.\n\nAdd size check when qrtr_cb->type equals to QRTR_TYPE_RESUME_TX in\nqrtr_endpoint_post() to fix the bug."}], "id": "CVE-2023-53578", "lastModified": "2026-03-23T18:30:42.813", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-10-04T16:15:53.483", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3814d211ff13ee35f2d9437439a6c7df58524137"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6417070918de3bcdbe0646e7256dae58fd8083ba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8c9ce34a6ff2c544f96ce0b088e8fd3c1b9698c4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bef57c227b52c2bde00fad33556175d36d12cfa0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c6a796ee5a639ffb83c6e5469408cc2ec16cac6a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()", "id": "2401492", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2401492"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: qrtr: Fix an uninit variable access bug in qrtr_tx_resume()\nSyzbot reported a bug as following:\n=====================================================\nBUG: KMSAN: uninit-value in qrtr_tx_resume+0x185/0x1f0 net/qrtr/af_qrtr.c:230\nqrtr_tx_resume+0x185/0x1f0 net/qrtr/af_qrtr.c:230\nqrtr_endpoint_post+0xf85/0x11b0 net/qrtr/af_qrtr.c:519\nqrtr_tun_write_iter+0x270/0x400 net/qrtr/tun.c:108\ncall_write_iter include/linux/fs.h:2189 [inline]\naio_write+0x63a/0x950 fs/aio.c:1600\nio_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019\n__do_sys_io_submit fs/aio.c:2078 [inline]\n__se_sys_io_submit+0x293/0x770 fs/aio.c:2048\n__x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\nUninit was created at:\nslab_post_alloc_hook mm/slab.h:766 [inline]\nslab_alloc_node mm/slub.c:3452 [inline]\n__kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491\n__do_kmalloc_node mm/slab_common.c:967 [inline]\n__kmalloc_node_track_caller+0x114/0x3b0 mm/slab_common.c:988\nkmalloc_reserve net/core/skbuff.c:492 [inline]\n__alloc_skb+0x3af/0x8f0 net/core/skbuff.c:565\n__netdev_alloc_skb+0x120/0x7d0 net/core/skbuff.c:630\nqrtr_endpoint_post+0xbd/0x11b0 net/qrtr/af_qrtr.c:446\nqrtr_tun_write_iter+0x270/0x400 net/qrtr/tun.c:108\ncall_write_iter include/linux/fs.h:2189 [inline]\naio_write+0x63a/0x950 fs/aio.c:1600\nio_submit_one+0x1d1c/0x3bf0 fs/aio.c:2019\n__do_sys_io_submit fs/aio.c:2078 [inline]\n__se_sys_io_submit+0x293/0x770 fs/aio.c:2048\n__x64_sys_io_submit+0x92/0xd0 fs/aio.c:2048\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\nIt is because that skb->len requires at least sizeof(struct qrtr_ctrl_pkt)\nin qrtr_tx_resume(). And skb->len equals to size in qrtr_endpoint_post().\nBut size is less than sizeof(struct qrtr_ctrl_pkt) when qrtr_cb->type\nequals to QRTR_TYPE_RESUME_TX in qrtr_endpoint_post() under the syzbot\nscenario. This triggers the uninit variable access bug.\nAdd size check when qrtr_cb->type equals to QRTR_TYPE_RESUME_TX in\nqrtr_endpoint_post() to fix the bug."], "name": "CVE-2023-53578", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53578\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53578\nhttps://lore.kernel.org/linux-cve-announce/2025100455-CVE-2023-53578-7dbf@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-10-06T14:41:37.848518+00:00", "updated": "2025-10-06T14:41:37.848568+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}