CVE-2021-47548
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.36% probability · 70th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-129
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803Patch
- https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040bPatch
- https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6dPatch
- https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114Patch
- https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1Patch
- https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ffPatch
- https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627Patch
- https://git.kernel.org/stable/c/22519eff7df2d88adcc2568d86046ce1e2b52803Patch
- https://git.kernel.org/stable/c/948968f8747650447c8f21c9fdba0e1973be040bPatch
- https://git.kernel.org/stable/c/99bb25cb6753beaf2c2bc37927c2ecc0ceff3f6dPatch
- https://git.kernel.org/stable/c/a66998e0fbf213d47d02813b9679426129d0d114Patch
- https://git.kernel.org/stable/c/abbd5faa0748d0aa95d5191d56ff7a17a6275bd1Patch
- https://git.kernel.org/stable/c/dd07f8971b81ad98cc754b179b331b57f35aa1ffPatch
- https://git.kernel.org/stable/c/fc7ffa7f10b9454a86369405d9814bf141b30627Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.