Linux vulnerability

What happened

In the Linux kernel, the following vulnerability has been resolved: md/raid5-ppl: fix use-after-free in ppl_do_flush() The loop in ppl_do_flush() continues iterating after calling ppl_io_unit_finished(), touching io->pending_flushes and leading to a use-after-free. Add a break statement to stop the loop once io is freed.

Affected versions

Linux: 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 through before cf01f9413565e86673baf927291a088b6975692b (git); 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 through before e7505842f1329ece90cb9ea0db87772aeca44052 (git); 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 through before b5123bf667ac29ddd8106f9ca7cc01316513ae66 (git); 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 through before e77c80670f2c2bf491da9b173931e1da4677c23a (git); 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 through before 8914c3d40870f16429a326e97e4016bedc6ede4c (git); 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 through before 455b56209f9615c3902dcc398dd867abb5ade3ab (git); 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 through before fcf21df7d3c50c8ebeb0757df5d21b02dcae4218 (git); 1532d9e87e8b2377f12929f9e40724d5fbe6ecc5 through before 371f7a1b392edc8b7cf449cc7713179b588f2d0e (git); 4.16 Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.