# CVE-2022-48780: linux: In the Linux kernel, the following vulnerability has been resolved:  net/smc: Avoid overwriting the copies of clcsock...

CVE-2022-48780 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48780, released July 16, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-48780
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0023
- 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:  net/smc: Avoid overwriting the copies of clcsock callback functions  The callback functions of clcsock will be saved and replaced during the fallback. But if the fallback happens more than once, then the copies of these callback functions will be overwritten incorrectly, resulting in a loop call issue:  clcsk->sk_error_report  |- smc_fback_error_report() <------------------------------|      |- smc_fback_forward_wakeup()                          | (loop)          |- clcsock_callback()  (incorrectly overwritten)   |              |- smc->clcsk_error_report() ------------------|  So this patch fixes the issue by saving these function pointers only once in the fallback and avoiding overwriting.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.16.11-1 | [DEBIAN-CVE-2022-48780](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48780.md) | Jul 16, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.16.11-1 | [DEBIAN-CVE-2022-48780](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48780.md) | Jul 16, 2024 |
| Linux | linux Debian 14 | 5.16.11-1 | [DEBIAN-CVE-2022-48780](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48780.md) | Jul 16, 2024 |

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