CVE-2025-37796

In the Linux kernel, the following vulnerability has been resolved: wifi: at76c50x: fix use after free access in at76_disconnect The memory pointed to by priv is freed at the end of at76_delete_device function (using ieee80211_free_hw). But the code then accesses the udev field of the freed object to put the USB device. This may also lead to a memory leak of the usb device. Fix this by using udev from interface.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/152721cbae42713ecfbca6847e0f102ee6b19546	Patch
https://git.kernel.org/stable/c/27c7e63b3cb1a20bb78ed4a36c561ea4579fd7da	Patch
https://git.kernel.org/stable/c/3c619aec1f538333b56746d2f796aab1bca5c9a5	Patch
https://git.kernel.org/stable/c/5e7df74745700f059dc117a620e566964a2e8f2c	Patch
https://git.kernel.org/stable/c/6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33f	Patch
https://git.kernel.org/stable/c/7ca513631fa6ad3011b8b9197cdde0f351103704	Patch
https://git.kernel.org/stable/c/a9682bfef2cf3802515a902e964d774e137be1b9	Patch
https://git.kernel.org/stable/c/c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6	Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

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::::::::
	cpe:2.3:o:linux:linux_kernel:3.17:-::::::
	cpe:2.3:o:linux:linux_kernel:3.17:rc5::::::
	cpe:2.3:o:linux:linux_kernel:3.17:rc6::::::
	cpe:2.3:o:linux:linux_kernel:3.17:rc7::::::
	cpe:2.3:o:linux:linux_kernel:6.15:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.15:rc2::::::

History

No history.

Information

Published : 2025-05-01 14:15

Updated : 2025-11-03 20:18

NVD link : CVE-2025-37796

Mitre link : CVE-2025-37796

CVE.ORG link : CVE-2025-37796

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

{"id": "CVE-2025-37796", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2025-05-01T14:15:44.173", "references": [{"url": "https://git.kernel.org/stable/c/152721cbae42713ecfbca6847e0f102ee6b19546", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/27c7e63b3cb1a20bb78ed4a36c561ea4579fd7da", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3c619aec1f538333b56746d2f796aab1bca5c9a5", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5e7df74745700f059dc117a620e566964a2e8f2c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7ca513631fa6ad3011b8b9197cdde0f351103704", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a9682bfef2cf3802515a902e964d774e137be1b9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x: fix use after free access in at76_disconnect\n\nThe memory pointed to by priv is freed at the end of at76_delete_device\nfunction (using ieee80211_free_hw). But the code then accesses the udev\nfield of the freed object to put the USB device. This may also lead to a\nmemory leak of the usb device. Fix this by using udev from interface."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: at76c50x: se corrige el use after free en at76_disconnect. La memoria a la que apunta priv se libera al final de la funci\u00f3n at76_delete_device (mediante ieee80211_free_hw). Sin embargo, el c\u00f3digo accede al campo udev del objeto liberado para colocar el dispositivo USB. Esto tambi\u00e9n puede provocar una fuga de memoria del dispositivo USB. Se soluciona usando udev desde la interfaz."}], "lastModified": "2025-11-03T20:18:35.430", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "887FE1CA-1D19-4E10-B6D9-8DC98A70B502", "versionEndExcluding": "5.4.293", "versionStartIncluding": "3.17.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0710B81E-E2FA-4E15-8F68-D297EBB4D50D", "versionEndExcluding": "5.10.237", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12331C9E-F601-4EFC-899E-369F98DCC70B", "versionEndExcluding": "5.15.181", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5B9ACE29-7445-4B6F-B761-6367C005E275", "versionEndExcluding": "6.1.135", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E5947E5-45E3-462A-829B-382B3B1C61BD", "versionEndExcluding": "6.6.88", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8E59EE65-FA6B-4AE4-8125-26135E28BF35", "versionEndExcluding": "6.12.25", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "29FA1A8E-1C2A-4B0B-B397-2C915ECDEDEE", "versionEndExcluding": "6.14.4", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.17:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3A351B03-87A0-405B-8A9B-488E173E1E3B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.17:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4223286C-F679-4FEC-B144-1C3B942BD506"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.17:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C889AAA8-186E-433F-A31D-FF09221E1EBC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.17:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "80BC78EE-50D8-4561-A6A6-A370E72F215B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4C9D071F-B28E-46EC-AC61-22B913390211"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}