CVE-2023-52915

In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer In af9035_i2c_master_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach af9035_i2c_master_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0143f282b15f7cedc0392ea10050fb6000fd16e6	Patch
https://git.kernel.org/stable/c/41b7181a40af84448a2b144fb02d8bf32b7e9a23	Patch
https://git.kernel.org/stable/c/6c01ef65de0b321b2db1ef9abf8f1d15862b937e	Patch
https://git.kernel.org/stable/c/7bf744f2de0a848fb1d717f5831b03db96feae89	Patch
https://git.kernel.org/stable/c/b2f54ed7739dfdf42c4df0a11131aad7c8635464	Patch
https://git.kernel.org/stable/c/b49c6e5dd236787f13a062ec528d724169f11152	Patch
https://git.kernel.org/stable/c/d9ef84a7c222497ecb5fdf93361c76931804825e	Patch
https://git.kernel.org/stable/c/fa58d9db5cad4bb7bb694b6837e3b96d87554f2b	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-09-06 09:15

Updated : 2024-09-10 17:12

NVD link : CVE-2023-52915

Mitre link : CVE-2023-52915

CVE.ORG link : CVE-2023-52915

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2023-52915", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-09-06T09:15:02.787", "references": [{"url": "https://git.kernel.org/stable/c/0143f282b15f7cedc0392ea10050fb6000fd16e6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/41b7181a40af84448a2b144fb02d8bf32b7e9a23", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6c01ef65de0b321b2db1ef9abf8f1d15862b937e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7bf744f2de0a848fb1d717f5831b03db96feae89", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b2f54ed7739dfdf42c4df0a11131aad7c8635464", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b49c6e5dd236787f13a062ec528d724169f11152", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d9ef84a7c222497ecb5fdf93361c76931804825e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/fa58d9db5cad4bb7bb694b6837e3b96d87554f2b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer\n\nIn af9035_i2c_master_xfer, msg is controlled by user. When msg[i].buf\nis null and msg[i].len is zero, former checks on msg[i].buf would be\npassed. Malicious data finally reach af9035_i2c_master_xfer. If accessing\nmsg[i].buf[0] without sanity check, null ptr deref would happen.\nWe add check on msg[i].len to prevent crash.\n\nSimilar commit:\ncommit 0ed554fd769a\n(\"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\")"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer En af9035_i2c_master_xfer, msg est\u00e1 controlado por el usuario. Cuando msg[i].buf es nulo y msg[i].len es cero, se pasar\u00edan las comprobaciones anteriores en msg[i].buf. Los datos maliciosos finalmente llegan a af9035_i2c_master_xfer. Si se accede a msg[i].buf[0] sin una comprobaci\u00f3n de cordura, se producir\u00eda una desreferencia nula de ptr. Agregamos una comprobaci\u00f3n en msg[i].len para evitar un bloqueo. Commit similar: commit 0ed554fd769a (\"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\")"}], "lastModified": "2024-09-10T17:12:41.607", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C67A42DD-BAE5-4A0C-9EB9-679ACF1CD6B2", "versionEndExcluding": "4.14.326"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D419C7D6-F33D-4EF8-8950-1CB5DDF6A55D", "versionEndExcluding": "4.19.295", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "834BD148-28EC-43A4-A4F5-458124A1E39F", "versionEndExcluding": "5.4.257", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FD17EA9A-DF74-4876-AADC-C204F0716961", "versionEndExcluding": "5.10.197", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21236FF3-9B2C-4C1A-8780-BC5BCA44AA51", "versionEndExcluding": "5.15.133", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0EFCF8E8-5528-46B9-8C17-B09792899CE0", "versionEndExcluding": "6.1.55", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8CF71E85-DA24-4925-95C5-E5C15DA71AE6", "versionEndExcluding": "6.5.5", "versionStartIncluding": "6.2"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}