Description
In the Linux kernel, the following vulnerability has been resolved: espintcp: Fix race condition in espintcp_close() This issue was discovered during a code audit. After cancel_work_sync() is called from espintcp_close(), espintcp_tx_work() can still be scheduled from paths such as the Delayed ACK handler or ksoftirqd. As a result, the espintcp_tx_work() worker may dereference a freed espintcp ctx or sk. The following is a simple race scenario: cpu0 cpu1 espintcp_close() cancel_work_sync(&ctx->work); espintcp_write_space() schedule_work(&ctx->work); To prevent this race condition, cancel_work_sync() is replaced with disable_work_sync().
Product status
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 (git) before f7ad8b1d0e421c524604d5076b73232093490d5c
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 (git) before 664e9df53226b4505a0894817ecad2c610ab11d8
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 (git) before 022ff7f347588de6e17879a1da6019647b21321b
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 (git) before e1512c1db9e8794d8d130addd2615ec27231d994
5.6
Any version before 5.6
6.12.75 (semver)
6.18.16 (semver)
6.19.6 (semver)
7.0-rc2 (original_commit_for_fix)
References
git.kernel.org/...c/f7ad8b1d0e421c524604d5076b73232093490d5c
git.kernel.org/...c/664e9df53226b4505a0894817ecad2c610ab11d8
git.kernel.org/...c/022ff7f347588de6e17879a1da6019647b21321b
git.kernel.org/...c/e1512c1db9e8794d8d130addd2615ec27231d994