Description (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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f87e62d45e51b12d48d2cb46b5cde8f83b866bc4 before a5de36d6cee74a92c1a21b260bc507e64bc451de; affected f87e62d45e51b12d48d2cb46b5cde8f83b866bc4 before 854cd32bc74fe573353095e90958490e4e4d641b; affected f87e62d45e51b12d48d2cb46b5cde8f83b866bc4 before 17153f154f80be2b47ebf52840f2d8f724eb2f3b; affected f87e62d45e51b12d48d2cb46b5cde8f83b866bc4 before 7bb09315f93dce6acc54bf59e5a95ba7365c2be4 |
| Linux / Linux | affected 5.3; unaffected 0 before 5.3; unaffected 6.12.75 through 6.12.*; unaffected 6.18.16 through 6.18.*; unaffected 6.19.6 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a5de36d6cee74a92c1a21b260bc507e64bc451de
- https://git.kernel.org/stable/c/854cd32bc74fe573353095e90958490e4e4d641b
- https://git.kernel.org/stable/c/17153f154f80be2b47ebf52840f2d8f724eb2f3b
- https://git.kernel.org/stable/c/7bb09315f93dce6acc54bf59e5a95ba7365c2be4
ADP enrichment
No English description supplied.
No references supplied.