CVE-2021-47548: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
First published: Fri May 24 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() The if statement: if (port >= DSAF_GE_NUM) return; limits the value of port less than DSAF_GE_NUM (i.e., 8). However, if the value of port is 6 or 7, an array overflow could occur: port_rst_off = dsaf_dev->mac_cb[port]->port_rst_off; because the length of dsaf_dev->mac_cb is DSAF_MAX_PORT_NUM (i.e., 6). To fix this possible array overflow, we first check port and if it is greater than or equal to DSAF_MAX_PORT_NUM, the function returns.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.9.292 | 4.9.292 |
| redhat/kernel | <4.14.257 | 4.14.257 |
| redhat/kernel | <4.19.220 | 4.19.220 |
| redhat/kernel | <5.4.164 | 5.4.164 |
| redhat/kernel | <5.10.84 | 5.10.84 |
| redhat/kernel | <5.15.7 | 5.15.7 |
| redhat/kernel | <5.16 | 5.16 |
| Linux Kernel | <4.9.292 | |
| Linux Kernel | >=4.10<4.14.257 | |
| Linux Kernel | >=4.15<4.19.220 | |
| Linux Kernel | >=4.20<5.4.164 | |
| Linux Kernel | >=5.5<5.10.84 | |
| Linux Kernel | >=5.11<5.15.7 | |
| Linux Kernel | =5.16-rc1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803
- https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040b
- https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6d
- https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114
- https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1
- https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ff
- https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627
- https://access.redhat.com/security/cve/CVE-2021-47548
- https://lore.kernel.org/linux-cve-announce/2024052441-CVE-2021-47548-e9c0@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:4533
- https://access.redhat.com/errata/RHSA-2024:4554
- https://access.redhat.com/errata/RHSA-2024:4583
- https://access.redhat.com/errata/RHSA-2024:4740
- https://access.redhat.com/errata/RHSA-2024:4902
- https://access.redhat.com/errata/RHSA-2024:5102
- https://access.redhat.com/errata/RHSA-2024:5101
- https://bugzilla.redhat.com/show_bug.cgi?id=2283401
- agent/title
- agent/first-publish-date
- agent/type
- agent/author
- agent/weakness
- agent/event
- agent/description
- agent/severity
- agent/references
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-47548
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/source
- collector/nvd-api
- source/NVD
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- package-manager/redhat
- vendor/linux
- canonical/linux kernel
- version/linux kernel/4.10
- version/linux kernel/4.15
- version/linux kernel/4.20
- version/linux kernel/5.5
- version/linux kernel/5.11
- version/linux kernel/5.16-rc1