CVE-2021-47301
Published: May 21, 2024
Modified: May 11, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: igb: Fix use-after-free error during reset Cleans the next descriptor to watch (next_to_watch) when cleaning the TX ring. Failure to do so can cause invalid memory accesses. If igb_poll() runs while the controller is reset this can lead to the driver try to free a skb that was already freed. (The crash is harder to reproduce with the igb driver, but the same potential problem exists as the code is identical to igc)
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 7cc6fd4c60f267e17b0baef1580d7a6258c0a6f0 - < d7367f781e5a9ca5df9082b15b272b55e76931f8affected 7cc6fd4c60f267e17b0baef1580d7a6258c0a6f0 - < d3ccb18ed5ac3283c7b31ecc685b499e580d5492affected 7cc6fd4c60f267e17b0baef1580d7a6258c0a6f0 - < 88e0720133d42d34851c8721cf5f289a50a8710faffected 7cc6fd4c60f267e17b0baef1580d7a6258c0a6f0 - < f153664d8e70c11d0371341613651e1130e20240affected 7cc6fd4c60f267e17b0baef1580d7a6258c0a6f0 - < 8e24c12f2ff6d32fd9f057382f08e748ec97194c+1 more versions |
Linux | Linux | affected 4.12unaffected 0 - < 4.12unaffected 4.14.241 - <= 4.14.*unaffected 4.19.199 - <= 4.19.*unaffected 5.4.136 - <= 5.4.*+3 more versions |
References
Security Training
Train your team to recognize and prevent security threats with our comprehensive security awareness program.
Start TrainingVulnerability Scanning
Discover vulnerabilities in your applications and infrastructure before attackers do.
Scan Now