Revision da353fac65fede6b8b4cfe207f0d9408e3121105 authored by Daniel Jordan on 27 October 2021, 21:59:20 UTC, committed by David S. Miller on 28 October 2021, 13:41:20 UTC
sk->sk_err appears to expect a positive value, a convention that ktls doesn't always follow and that leads to memory corruption in other code. For instance, [kworker] tls_encrypt_done(..., err=<negative error from crypto request>) tls_err_abort(.., err) sk->sk_err = err; [task] splice_from_pipe_feed ... tls_sw_do_sendpage if (sk->sk_err) { ret = -sk->sk_err; // ret is positive splice_from_pipe_feed (continued) ret = actor(...) // ret is still positive and interpreted as bytes // written, resulting in underflow of buf->len and // sd->len, leading to huge buf->offset and bogus // addresses computed in later calls to actor() Fix all tls_err_abort() callers to pass a negative error code consistently and centralize the error-prone sign flip there, throwing in a warning to catch future misuse and uninlining the function so it really does only warn once. Cc: stable@vger.kernel.org Fixes: c46234ebb4d1e ("tls: RX path for ktls") Reported-by: syzbot+b187b77c8474f9648fae@syzkaller.appspotmail.com Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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File | Mode | Size |
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governors | ||
Kconfig | -rw-r--r-- | 2.1 KB |
Kconfig.arm | -rw-r--r-- | 3.9 KB |
Kconfig.mips | -rw-r--r-- | 658 bytes |
Kconfig.powerpc | -rw-r--r-- | 520 bytes |
Makefile | -rw-r--r-- | 1.5 KB |
coupled.c | -rw-r--r-- | 25.2 KB |
cpuidle-arm.c | -rw-r--r-- | 4.0 KB |
cpuidle-at91.c | -rw-r--r-- | 1.6 KB |
cpuidle-big_little.c | -rw-r--r-- | 6.6 KB |
cpuidle-calxeda.c | -rw-r--r-- | 1.6 KB |
cpuidle-clps711x.c | -rw-r--r-- | 1.2 KB |
cpuidle-cps.c | -rw-r--r-- | 4.2 KB |
cpuidle-exynos.c | -rw-r--r-- | 3.3 KB |
cpuidle-haltpoll.c | -rw-r--r-- | 3.1 KB |
cpuidle-kirkwood.c | -rw-r--r-- | 2.2 KB |
cpuidle-mvebu-v7.c | -rw-r--r-- | 3.3 KB |
cpuidle-powernv.c | -rw-r--r-- | 10.2 KB |
cpuidle-psci-domain.c | -rw-r--r-- | 7.1 KB |
cpuidle-psci.c | -rw-r--r-- | 9.3 KB |
cpuidle-psci.h | -rw-r--r-- | 540 bytes |
cpuidle-pseries.c | -rw-r--r-- | 12.3 KB |
cpuidle-qcom-spm.c | -rw-r--r-- | 8.9 KB |
cpuidle-tegra.c | -rw-r--r-- | 9.1 KB |
cpuidle-ux500.c | -rw-r--r-- | 3.0 KB |
cpuidle-zynq.c | -rw-r--r-- | 1.5 KB |
cpuidle.c | -rw-r--r-- | 18.4 KB |
cpuidle.h | -rw-r--r-- | 2.2 KB |
driver.c | -rw-r--r-- | 9.6 KB |
dt_idle_states.c | -rw-r--r-- | 6.3 KB |
dt_idle_states.h | -rw-r--r-- | 216 bytes |
governor.c | -rw-r--r-- | 2.7 KB |
poll_state.c | -rw-r--r-- | 1.3 KB |
sysfs.c | -rw-r--r-- | 18.9 KB |
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