CVSS 9.8 · Critical EPSS 0,51%
Kerentanan Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') pada linux kernel. Skor CVSS 3.1 9.8 (Critical) menurut CNA.
In the Linux kernel, the following vulnerability has been resolved: tls: Fix race condition in tls_sw_cancel_work_tx() This issue was discovered during a code audit. After cancel_delayed_work_sync() is called from tls_sk_proto_close(), tx_work_handler() can still be scheduled from paths such as the Delayed ACK handler or ksoftirqd. As a result, the tx_work_handler() worker may dereference a freed TLS object. The following is a simple race scenario: cpu0 cpu1 tls_sk_proto_close() tls_sw_cancel_work_tx() tls_write_space() tls_sw_write_space() if (!test_and_set_bit(BIT_TX_SCHEDULED, &tx_ctx->tx_bitmask)) set_bit(BIT_TX_SCHEDULED, &ctx->tx_bitmask); cancel_delayed_work_sync(&ctx->tx_work.work); schedule_delayed_work(&tx_ctx->tx_work.work, 0); To prevent this race condition, cancel_delayed_work_sync() is replaced with disable_delayed_work_sync().
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| linux | linux kernel | Versi 5.3.1 hingga sebelum 6.12.75 |
| linux | linux kernel | Versi 6.13 hingga sebelum 6.18.16 |
| linux | linux kernel | Versi 6.19 hingga sebelum 6.19.6 |
| linux | linux kernel | Versi 5.3 |
| linux | linux kernel | Versi 5.3 rc4 |
| linux | linux kernel | Versi 5.3 rc5 |
| linux | linux kernel | Versi 5.3 rc6 |
| linux | linux kernel | Versi 5.3 rc7 |
| linux | linux kernel | Versi 5.3 rc8 |
| linux | linux kernel | Versi 7.0 rc1 |