一、漏洞信息
漏洞编号：CVE-2024-26748
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0
CVSS V2.0分值：
BaseScore：0.0 Low
Vector：CVSS：2.0/
漏洞简述：
In the Linux kernel, the following vulnerability has been resolved:usb: cdns3: fix memory double free when handle zero packet829 if (request->complete) {830 spin_unlock(&priv_dev->lock);831 usb_gadget_giveback_request(&priv_ep->endpoint,832 request);833 spin_lock(&priv_dev->lock);834 }835836 if (request->buf == priv_dev->zlp_buf)837 cdns3_gadget_ep_free_request(&priv_ep->endpoint, request);Driver append an additional zero packet request when queue a packet, whichlength mod max packet size is 0. When transfer complete, run to line 831,usb_gadget_giveback_request() will free this requestion. 836 condition istrue, so cdns3_gadget_ep_free_request() free this request again.Log:[ 1920.140696][ T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3][ 1920.140696][ T150][ 1920.151837][ T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36):[ 1920.159082][ T150] cdns3_gadget_giveback+0x134/0x2c0 [cdns3][ 1920.164988][ T150] cdns3_transfer_completed+0x438/0x5f8 [cdns3]Add check at line 829, skip call usb_gadget_giveback_request() if it isadditional zero length packet request. Needn t callusb_gadget_giveback_request() because it is allocated in this driver.
漏洞公开时间：2024-04-04 01:15:51
漏洞创建时间：2024-04-04 02:36:52
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2024-26748

漏洞分析指导链接：
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
漏洞数据来源:
openBrain开源漏洞感知系统
漏洞补丁信息：

二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:usb: cdns3: fix memory double free when handle zero packet829 if (request->complete) {830 spin_unlock(&priv_dev->lock);831 usb_gadget_giveback_request(&priv_ep->endpoint,832 request);833 spin_lock(&priv_dev->lock);834 }835836 if (request->buf == priv_dev->zlp_buf)837 cdns3_gadget_ep_free_request(&priv_ep->endpoint, request);Driver append an additional zero packet request when queue a packet, whichlength mod max packet size is 0. When transfer complete, run to line 831,usb_gadget_giveback_request() will free this requestion. 836 condition istrue, so cdns3_gadget_ep_free_request() free this request again.Log:[ 1920.140696][ T150] BUG: KFENCE: use-after-free read in cdns3_gadget_giveback+0x134/0x2c0 [cdns3][ 1920.140696][ T150][ 1920.151837][ T150] Use-after-free read at 0x000000003d1cd10b (in kfence-#36):[ 1920.159082][ T150] cdns3_gadget_giveback+0x134/0x2c0 [cdns3][ 1920.164988][ T150] cdns3_transfer_completed+0x438/0x5f8 [cdns3]Add check at line 829, skip call usb_gadget_giveback_request() if it isadditional zero length packet request. Needn t callusb_gadget_giveback_request() because it is allocated in this driver.
openEuler评分：
5.5
Vector：CVSS：2.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
受影响版本排查(受影响/不受影响)：
1.openEuler-22.03-LTS(5.10.0):受影响
2.openEuler-22.03-LTS-SP1(5.10.0):受影响
3.openEuler-22.03-LTS-SP2(5.10.0):受影响
4.openEuler-22.03-LTS-SP3(5.10.0):受影响
5.openEuler-20.03-LTS-SP1(4.19.90):不受影响
6.openEuler-20.03-LTS-SP4(4.19.90):不受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next(5.10.0):不受影响
9.openEuler-24.03-LTS:不受影响
10.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS(5.10.0):否
4.openEuler-22.03-LTS-SP1(5.10.0):否
5.openEuler-22.03-LTS-SP2(5.10.0):否
6.openEuler-22.03-LTS-SP3(5.10.0):否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next(5.10.0):否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否