CWE-125
AllowedOut-of-bounds Read
Abstraction: Base · Status: Draft
The product reads data past the end, or before the beginning, of the intended buffer.
11270 vulnerabilities reference this CWE, most recent first.
GHSA-JVC3-W86J-MCG3
Vulnerability from github – Published: 2024-09-18 09:30 – Updated: 2026-05-12 12:32In the Linux kernel, the following vulnerability has been resolved:
of/irq: Prevent device address out-of-bounds read in interrupt map walk
When of_irq_parse_raw() is invoked with a device address smaller than the interrupt parent node (from #address-cells property), KASAN detects the following out-of-bounds read when populating the initial match table (dyndbg="func of_irq_parse_* +p"):
OF: of_irq_parse_one: dev=/soc@0/picasso/watchdog, index=0 OF: parent=/soc@0/pci@878000000000/gpio0@17,0, intsize=2 OF: intspec=4 OF: of_irq_parse_raw: ipar=/soc@0/pci@878000000000/gpio0@17,0, size=2 OF: -> addrsize=3 ================================================================== BUG: KASAN: slab-out-of-bounds in of_irq_parse_raw+0x2b8/0x8d0 Read of size 4 at addr ffffff81beca5608 by task bash/764
CPU: 1 PID: 764 Comm: bash Tainted: G O 6.1.67-484c613561-nokia_sm_arm64 #1 Hardware name: Unknown Unknown Product/Unknown Product, BIOS 2023.01-12.24.03-dirty 01/01/2023 Call trace: dump_backtrace+0xdc/0x130 show_stack+0x1c/0x30 dump_stack_lvl+0x6c/0x84 print_report+0x150/0x448 kasan_report+0x98/0x140 __asan_load4+0x78/0xa0 of_irq_parse_raw+0x2b8/0x8d0 of_irq_parse_one+0x24c/0x270 parse_interrupts+0xc0/0x120 of_fwnode_add_links+0x100/0x2d0 fw_devlink_parse_fwtree+0x64/0xc0 device_add+0xb38/0xc30 of_device_add+0x64/0x90 of_platform_device_create_pdata+0xd0/0x170 of_platform_bus_create+0x244/0x600 of_platform_notify+0x1b0/0x254 blocking_notifier_call_chain+0x9c/0xd0 __of_changeset_entry_notify+0x1b8/0x230 __of_changeset_apply_notify+0x54/0xe4 of_overlay_fdt_apply+0xc04/0xd94 ...
The buggy address belongs to the object at ffffff81beca5600 which belongs to the cache kmalloc-128 of size 128 The buggy address is located 8 bytes inside of 128-byte region [ffffff81beca5600, ffffff81beca5680)
The buggy address belongs to the physical page: page:00000000230d3d03 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1beca4 head:00000000230d3d03 order:1 compound_mapcount:0 compound_pincount:0 flags: 0x8000000000010200(slab|head|zone=2) raw: 8000000000010200 0000000000000000 dead000000000122 ffffff810000c300 raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected
Memory state around the buggy address: ffffff81beca5500: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffffff81beca5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffffff81beca5600: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffffff81beca5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffffff81beca5700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc ================================================================== OF: -> got it !
Prevent the out-of-bounds read by copying the device address into a buffer of sufficient size.
{
"affected": [],
"aliases": [
"CVE-2024-46743"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-09-18T08:15:03Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nof/irq: Prevent device address out-of-bounds read in interrupt map walk\n\nWhen of_irq_parse_raw() is invoked with a device address smaller than\nthe interrupt parent node (from #address-cells property), KASAN detects\nthe following out-of-bounds read when populating the initial match table\n(dyndbg=\"func of_irq_parse_* +p\"):\n\n OF: of_irq_parse_one: dev=/soc@0/picasso/watchdog, index=0\n OF: parent=/soc@0/pci@878000000000/gpio0@17,0, intsize=2\n OF: intspec=4\n OF: of_irq_parse_raw: ipar=/soc@0/pci@878000000000/gpio0@17,0, size=2\n OF: -\u003e addrsize=3\n ==================================================================\n BUG: KASAN: slab-out-of-bounds in of_irq_parse_raw+0x2b8/0x8d0\n Read of size 4 at addr ffffff81beca5608 by task bash/764\n\n CPU: 1 PID: 764 Comm: bash Tainted: G O 6.1.67-484c613561-nokia_sm_arm64 #1\n Hardware name: Unknown Unknown Product/Unknown Product, BIOS 2023.01-12.24.03-dirty 01/01/2023\n Call trace:\n dump_backtrace+0xdc/0x130\n show_stack+0x1c/0x30\n dump_stack_lvl+0x6c/0x84\n print_report+0x150/0x448\n kasan_report+0x98/0x140\n __asan_load4+0x78/0xa0\n of_irq_parse_raw+0x2b8/0x8d0\n of_irq_parse_one+0x24c/0x270\n parse_interrupts+0xc0/0x120\n of_fwnode_add_links+0x100/0x2d0\n fw_devlink_parse_fwtree+0x64/0xc0\n device_add+0xb38/0xc30\n of_device_add+0x64/0x90\n of_platform_device_create_pdata+0xd0/0x170\n of_platform_bus_create+0x244/0x600\n of_platform_notify+0x1b0/0x254\n blocking_notifier_call_chain+0x9c/0xd0\n __of_changeset_entry_notify+0x1b8/0x230\n __of_changeset_apply_notify+0x54/0xe4\n of_overlay_fdt_apply+0xc04/0xd94\n ...\n\n The buggy address belongs to the object at ffffff81beca5600\n which belongs to the cache kmalloc-128 of size 128\n The buggy address is located 8 bytes inside of\n 128-byte region [ffffff81beca5600, ffffff81beca5680)\n\n The buggy address belongs to the physical page:\n page:00000000230d3d03 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1beca4\n head:00000000230d3d03 order:1 compound_mapcount:0 compound_pincount:0\n flags: 0x8000000000010200(slab|head|zone=2)\n raw: 8000000000010200 0000000000000000 dead000000000122 ffffff810000c300\n raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000\n page dumped because: kasan: bad access detected\n\n Memory state around the buggy address:\n ffffff81beca5500: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n ffffff81beca5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n \u003effffff81beca5600: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n ^\n ffffff81beca5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n ffffff81beca5700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc\n ==================================================================\n OF: -\u003e got it !\n\nPrevent the out-of-bounds read by copying the device address into a\nbuffer of sufficient size.",
"id": "GHSA-jvc3-w86j-mcg3",
"modified": "2026-05-12T12:32:08Z",
"published": "2024-09-18T09:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46743"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7ead730af11ee7da107f16fc77995613c58d292d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8ff351ea12e918db1373b915c4c268815929cbe5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9d1e9f0876b03d74d44513a0ed3ed15ef8f2fed5"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b739dffa5d570b411d4bdf4bb9b8dfd6b7d72305"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/baaf26723beab3a04da578d3008be3544f83758f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bf68acd840b6a5bfd3777e0d5aaa204db6b461a9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d2a79494d8a5262949736fb2c3ac44d20a51b0d8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/defcaa426ba0bc89ffdafb799d2e50b52f74ffc4"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JVFH-J65V-3QC2
Vulnerability from github – Published: 2021-12-16 00:01 – Updated: 2021-12-18 00:01In rw_t4t_sm_detect_ndef of rw_t4t.cc, there is a possible out of bounds read due to an incorrect bounds check. This could lead to remote information disclosure due to a limited change in behavior based on the out of bounds data with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-191444150
{
"affected": [],
"aliases": [
"CVE-2021-0925"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-12-15T19:15:00Z",
"severity": "HIGH"
},
"details": "In rw_t4t_sm_detect_ndef of rw_t4t.cc, there is a possible out of bounds read due to an incorrect bounds check. This could lead to remote information disclosure due to a limited change in behavior based on the out of bounds data with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-191444150",
"id": "GHSA-jvfh-j65v-3qc2",
"modified": "2021-12-18T00:01:39Z",
"published": "2021-12-16T00:01:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-0925"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2021-11-01"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-JVG8-7VPM-4PV9
Vulnerability from github – Published: 2022-05-13 01:53 – Updated: 2022-05-13 01:53The JBIG2MMRDecoder::getBlackCode function in JBIG2Stream.cc in xpdf 4.00 allows attackers to launch denial of service (buffer over-read and application crash) via a specific pdf file, as demonstrated by pdftohtml.
{
"affected": [],
"aliases": [
"CVE-2018-8102"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-03-14T03:29:00Z",
"severity": "MODERATE"
},
"details": "The JBIG2MMRDecoder::getBlackCode function in JBIG2Stream.cc in xpdf 4.00 allows attackers to launch denial of service (buffer over-read and application crash) via a specific pdf file, as demonstrated by pdftohtml.",
"id": "GHSA-jvg8-7vpm-4pv9",
"modified": "2022-05-13T01:53:29Z",
"published": "2022-05-13T01:53:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-8102"
},
{
"type": "WEB",
"url": "https://forum.xpdfreader.com/viewtopic.php?f=3\u0026t=652"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JVGF-QM2R-RXV3
Vulnerability from github – Published: 2022-05-14 01:29 – Updated: 2022-05-14 01:29There is a heap-based buffer over-read in the getString function of util/decompile.c in libming 0.4.8 for CONSTANT8 data. A Crafted input will lead to a denial of service attack.
{
"affected": [],
"aliases": [
"CVE-2018-7875"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-03-08T18:29:00Z",
"severity": "MODERATE"
},
"details": "There is a heap-based buffer over-read in the getString function of util/decompile.c in libming 0.4.8 for CONSTANT8 data. A Crafted input will lead to a denial of service attack.",
"id": "GHSA-jvgf-qm2r-rxv3",
"modified": "2022-05-14T01:29:14Z",
"published": "2022-05-14T01:29:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-7875"
},
{
"type": "WEB",
"url": "https://github.com/libming/libming/issues/112"
},
{
"type": "WEB",
"url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=892260"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2018/04/msg00008.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JVH6-7W2J-6JPX
Vulnerability from github – Published: 2024-11-22 21:32 – Updated: 2024-11-22 21:32IrfanView DXF File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of DXF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24617.
{
"affected": [],
"aliases": [
"CVE-2024-11534"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-22T21:15:11Z",
"severity": "HIGH"
},
"details": "IrfanView DXF File Parsing Out-Of-Bounds Read Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of DXF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24617.",
"id": "GHSA-jvh6-7w2j-6jpx",
"modified": "2024-11-22T21:32:17Z",
"published": "2024-11-22T21:32:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-11534"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-24-1585"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JVHR-F94X-68CM
Vulnerability from github – Published: 2022-05-24 16:54 – Updated: 2024-04-04 01:43In Mfc_Transceive of phNxpExtns_MifareStd.cpp, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android. Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9. Android ID: A-125900276.
{
"affected": [],
"aliases": [
"CVE-2019-2135"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-08-20T20:15:00Z",
"severity": "HIGH"
},
"details": "In Mfc_Transceive of phNxpExtns_MifareStd.cpp, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android. Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9. Android ID: A-125900276.",
"id": "GHSA-jvhr-f94x-68cm",
"modified": "2024-04-04T01:43:28Z",
"published": "2022-05-24T16:54:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-2135"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2019-08-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-JVM6-P83J-GP84
Vulnerability from github – Published: 2026-07-14 18:32 – Updated: 2026-07-14 18:32Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
{
"affected": [],
"aliases": [
"CVE-2026-55121"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-14T18:18:18Z",
"severity": "MODERATE"
},
"details": "Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.",
"id": "GHSA-jvm6-p83j-gp84",
"modified": "2026-07-14T18:32:35Z",
"published": "2026-07-14T18:32:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55121"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55121"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JVMV-GGC2-MGHG
Vulnerability from github – Published: 2022-05-14 03:04 – Updated: 2022-05-14 03:04In wma_nan_rsp_event_handler() in Android releases from CAF using the linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) before security patch level 2018-06-05, the data_len value is received from firmware and not properly validated which could potentially lead to an out-of-bounds access.
{
"affected": [],
"aliases": [
"CVE-2018-5836"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-07-06T17:29:00Z",
"severity": "MODERATE"
},
"details": "In wma_nan_rsp_event_handler() in Android releases from CAF using the linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) before security patch level 2018-06-05, the data_len value is received from firmware and not properly validated which could potentially lead to an out-of-bounds access.",
"id": "GHSA-jvmv-ggc2-mghg",
"modified": "2022-05-14T03:04:29Z",
"published": "2022-05-14T03:04:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-5836"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2018-06-01#qualcomm-components"
},
{
"type": "WEB",
"url": "https://source.codeaurora.org/quic/la/platform/vendor/qcom-opensource/wlan/qcacld-3.0/commit/?id=12a789c2e0e9fd2df40ac13ac27fe99487263887"
},
{
"type": "WEB",
"url": "https://www.codeaurora.org/security-bulletin/2018/07/02/july-2018-code-aurora-security-bulletin"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-JVMW-M6J5-52P7
Vulnerability from github – Published: 2022-05-14 01:11 – Updated: 2022-05-14 01:11An out-of-bounds read was addressed with improved input validation. This issue affected versions prior to iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, watchOS 5.1.
{
"affected": [],
"aliases": [
"CVE-2018-4371"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-04-03T18:29:00Z",
"severity": "HIGH"
},
"details": "An out-of-bounds read was addressed with improved input validation. This issue affected versions prior to iOS 12.1, macOS Mojave 10.14.1, tvOS 12.1, watchOS 5.1.",
"id": "GHSA-jvmw-m6j5-52p7",
"modified": "2022-05-14T01:11:29Z",
"published": "2022-05-14T01:11:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-4371"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT209192"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT209193"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT209194"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT209195"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-JVQC-385V-69Q8
Vulnerability from github – Published: 2025-09-05 18:31 – Updated: 2026-05-12 15:31In the Linux kernel, the following vulnerability has been resolved:
tracing: Limit access to parser->buffer when trace_get_user failed
When the length of the string written to set_ftrace_filter exceeds FTRACE_BUFF_MAX, the following KASAN alarm will be triggered:
BUG: KASAN: slab-out-of-bounds in strsep+0x18c/0x1b0 Read of size 1 at addr ffff0000d00bd5ba by task ash/165
CPU: 1 UID: 0 PID: 165 Comm: ash Not tainted 6.16.0-g6bcdbd62bd56-dirty Hardware name: linux,dummy-virt (DT) Call trace: show_stack+0x34/0x50 (C) dump_stack_lvl+0xa0/0x158 print_address_description.constprop.0+0x88/0x398 print_report+0xb0/0x280 kasan_report+0xa4/0xf0 __asan_report_load1_noabort+0x20/0x30 strsep+0x18c/0x1b0 ftrace_process_regex.isra.0+0x100/0x2d8 ftrace_regex_release+0x484/0x618 __fput+0x364/0xa58 ____fput+0x28/0x40 task_work_run+0x154/0x278 do_notify_resume+0x1f0/0x220 el0_svc+0xec/0xf0 el0t_64_sync_handler+0xa0/0xe8 el0t_64_sync+0x1ac/0x1b0
The reason is that trace_get_user will fail when processing a string longer than FTRACE_BUFF_MAX, but not set the end of parser->buffer to 0. Then an OOB access will be triggered in ftrace_regex_release-> ftrace_process_regex->strsep->strpbrk. We can solve this problem by limiting access to parser->buffer when trace_get_user failed.
{
"affected": [],
"aliases": [
"CVE-2025-39683"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-05T18:15:44Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Limit access to parser-\u003ebuffer when trace_get_user failed\n\nWhen the length of the string written to set_ftrace_filter exceeds\nFTRACE_BUFF_MAX, the following KASAN alarm will be triggered:\n\nBUG: KASAN: slab-out-of-bounds in strsep+0x18c/0x1b0\nRead of size 1 at addr ffff0000d00bd5ba by task ash/165\n\nCPU: 1 UID: 0 PID: 165 Comm: ash Not tainted 6.16.0-g6bcdbd62bd56-dirty\nHardware name: linux,dummy-virt (DT)\nCall trace:\n show_stack+0x34/0x50 (C)\n dump_stack_lvl+0xa0/0x158\n print_address_description.constprop.0+0x88/0x398\n print_report+0xb0/0x280\n kasan_report+0xa4/0xf0\n __asan_report_load1_noabort+0x20/0x30\n strsep+0x18c/0x1b0\n ftrace_process_regex.isra.0+0x100/0x2d8\n ftrace_regex_release+0x484/0x618\n __fput+0x364/0xa58\n ____fput+0x28/0x40\n task_work_run+0x154/0x278\n do_notify_resume+0x1f0/0x220\n el0_svc+0xec/0xf0\n el0t_64_sync_handler+0xa0/0xe8\n el0t_64_sync+0x1ac/0x1b0\n\nThe reason is that trace_get_user will fail when processing a string\nlonger than FTRACE_BUFF_MAX, but not set the end of parser-\u003ebuffer to 0.\nThen an OOB access will be triggered in ftrace_regex_release-\u003e\nftrace_process_regex-\u003estrsep-\u003estrpbrk. We can solve this problem by\nlimiting access to parser-\u003ebuffer when trace_get_user failed.",
"id": "GHSA-jvqc-385v-69q8",
"modified": "2026-05-12T15:31:03Z",
"published": "2025-09-05T18:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39683"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3079517a5ba80901fe828a06998da64b9b8749be"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/418b448e1d7470da9d4d4797f71782595ee69c49"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/41b838420457802f21918df66764b6fbf829d330"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/58ff8064cb4c7eddac4da1a59da039ead586950a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6a909ea83f226803ea0e718f6e88613df9234d58"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b842ef39c2ad6156c13afdec25ecc6792a9b67b9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d0c68045b8b0f3737ed7bd6b8c83b7887014adee"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-5
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
- To reduce the likelihood of introducing an out-of-bounds read, ensure that you validate and ensure correct calculations for any length argument, buffer size calculation, or offset. Be especially careful of relying on a sentinel (i.e. special character such as NUL) in untrusted inputs.
Mitigation
Strategy: Language Selection
Use a language that provides appropriate memory abstractions.
CAPEC-540: Overread Buffers
An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.