# CVE-2022-48823: linux: In the Linux kernel, the following vulnerability has been resolved:  scsi: qedf: Fix refcount issue when LOGO is rece...

CVE-2022-48823 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48823, released July 16, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48823
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0028
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 16, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  scsi: qedf: Fix refcount issue when LOGO is received during TMF  Hung task call trace was seen during LOGO processing.  [  974.309060] [0000:00:00.0]:[qedf_eh_device_reset:868]: 1:0:2:0: LUN RESET Issued... [  974.309065] [0000:00:00.0]:[qedf_initiate_tmf:2422]: tm_flags 0x10 sc_cmd 00000000c16b930f op = 0x2a target_id = 0x2 lun=0 [  974.309178] [0000:00:00.0]:[qedf_initiate_tmf:2431]: portid=016900 tm_flags =LUN RESET [  974.309222] [0000:00:00.0]:[qedf_initiate_tmf:2438]: orig io_req = 00000000ec78df8f xid = 0x180 ref_cnt = 1. [  974.309625] host1: rport 016900: Received LOGO request while in state Ready [  974.309627] host1: rport 016900: Delete port [  974.309642] host1: rport 016900: work event 3 [  974.309644] host1: rport 016900: lld callback ev 3 [  974.313243] [0000:61:00.2]:[qedf_execute_tmf:2383]:1: fcport is uploading, not executing flush. [  974.313295] [0000:61:00.2]:[qedf_execute_tmf:2400]:1: task mgmt command success... [  984.031088] INFO: task jbd2/dm-15-8:7645 blocked for more than 120 seconds. [  984.031136]       Not tainted 4.18.0-305.el8.x86_64 #1  [  984.031166] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [  984.031209] jbd2/dm-15-8    D    0  7645      2 0x80004080 [  984.031212] Call Trace: [  984.031222]  __schedule+0x2c4/0x700 [  984.031230]  ? unfreeze_partials.isra.83+0x16e/0x1a0 [  984.031233]  ? bit_wait_timeout+0x90/0x90 [  984.031235]  schedule+0x38/0xa0 [  984.031238]  io_schedule+0x12/0x40 [  984.031240]  bit_wait_io+0xd/0x50 [  984.031243]  __wait_on_bit+0x6c/0x80 [  984.031248]  ? free_buffer_head+0x21/0x50 [  984.031251]  out_of_line_wait_on_bit+0x91/0xb0 [  984.031257]  ? init_wait_var_entry+0x50/0x50 [  984.031268]  jbd2_journal_commit_transaction+0x112e/0x19f0 [jbd2] [  984.031280]  kjournald2+0xbd/0x270 [jbd2] [  984.031284]  ? finish_wait+0x80/0x80 [  984.031291]  ? commit_timeout+0x10/0x10 [jbd2] [  984.031294]  kthread+0x116/0x130 [  984.031300]  ? kthread_flush_work_fn+0x10/0x10 [  984.031305]  ret_from_fork+0x1f/0x40  There was a ref count issue when LOGO is received during TMF. This leads to one of the I/Os hanging with the driver. Fix the ref count.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.16.10-1 | [DEBIAN-CVE-2022-48823](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48823.md) | Jul 16, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.16.10-1 | [DEBIAN-CVE-2022-48823](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48823.md) | Jul 16, 2024 |
| Linux | linux Debian 14 | 5.16.10-1 | [DEBIAN-CVE-2022-48823](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48823.md) | Jul 16, 2024 |

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