Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: arm64: hibernate: pass HVC_SET_VECTORS args to the resume hvc swsusp_arch_suspend_exit() reinstalls the restored kernel's hyp stub vectors with an hvc, but never passes the arguments. x0 is not set to HVC_SET_VECTORS and x1 is not set to the vector address, so the stub dispatch falls through and returns without writing vbar_el2. EL2 is left pointing at the trans_pgd copy of the vectors, a page that swsusp_free() releases right after resume. Set the arguments up the same way __hyp_set_vectors() does. Without this fix, Vladimir was able to trigger a hang when resuming from hibernation with CONFIG_PAGE_POISONING=y and page_poison=on.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 788bfdd97434982b6d575062581e8e72eea755af before 6646418d1032cac25110526161f60d255ed08397; affected 788bfdd97434982b6d575062581e8e72eea755af before 909e92423db7299e0206232051aa21fe129f65d0; affected 788bfdd97434982b6d575062581e8e72eea755af before 60a3c319f1127c4d247d4ed235c5d65376d5e745; affected 788bfdd97434982b6d575062581e8e72eea755af before e80ea8118a073a30ebe7a31bd78938c2b1751acc; affected 788bfdd97434982b6d575062581e8e72eea755af before d3f8f773312af69eaf4dda106d76d6d42e4362e5; affected 788bfdd97434982b6d575062581e8e72eea755af before 955d86e5f3b95b731991fdb84966c50b16314629 |
| Linux / Linux | affected 5.16; unaffected 0 before 5.16; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.54 through 6.18.*; unaffected 7.2.8 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6646418d1032cac25110526161f60d255ed08397
- https://git.kernel.org/stable/c/909e92423db7299e0206232051aa21fe129f65d0
- https://git.kernel.org/stable/c/60a3c319f1127c4d247d4ed235c5d65376d5e745
- https://git.kernel.org/stable/c/e80ea8118a073a30ebe7a31bd78938c2b1751acc
- https://git.kernel.org/stable/c/d3f8f773312af69eaf4dda106d76d6d42e4362e5
- https://git.kernel.org/stable/c/955d86e5f3b95b731991fdb84966c50b16314629