Description
In the Linux kernel, the following vulnerability has been resolved: tty: hvc_iucv: fix off-by-one in number of supported devices MAX_HVC_IUCV_LINES == HVC_ALLOC_TTY_ADAPTERS == 8. This is the number of entries in: static struct hvc_iucv_private *hvc_iucv_table[MAX_HVC_IUCV_LINES]; Sometimes hvc_iucv_table[] is limited by: (a) if (num > hvc_iucv_devices) // for error detection or (b) for (i = 0; i < hvc_iucv_devices; i++) // in 2 places (so these 2 don't agree; second one appears to be correct to me.) hvc_iucv_devices can be 0..8. This is a counter. (c) if (hvc_iucv_devices > MAX_HVC_IUCV_LINES) If hvc_iucv_devices == 8, (a) allows the code to access hvc_iucv_table[8]. Oops.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
44a01d5ba8a4d543694461cd3e178cfa6b3f221b to < 3d3b89e6ab93bdd0efd45828bda6b0e61cc46dffaffected44a01d5ba8a4d543694461cd3e178cfa6b3f221b to < 484357dff256c816d9466bda35eb765685e4dc86affected44a01d5ba8a4d543694461cd3e178cfa6b3f221b to < 11207e42a332eb8bbcb9fe74df9edd2a807c5607affected44a01d5ba8a4d543694461cd3e178cfa6b3f221b to < fed8b8f33a46db0ee2efdb000f4f630c86ed8ca4affected44a01d5ba8a4d543694461cd3e178cfa6b3f221b to < a76511bc654819425d3b15e77b523d7f9d81f064affected44a01d5ba8a4d543694461cd3e178cfa6b3f221b to < 3104a3f40feb107f77d7116ad9bf6c210ab7babfaffected44a01d5ba8a4d543694461cd3e178cfa6b3f221b to < f1dc8e72de9aabe5d96767a4e97219ac26b79fe5affected44a01d5ba8a4d543694461cd3e178cfa6b3f221b to < f2a880e802ad12d1e38039d1334fb1475d0f5241affected
Linux Linux
Default version status: affected
2.6.29affected0 to < 2.6.29unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.141 to ≤ 6.6.*unaffected6.12.91 to ≤ 6.12.*unaffected6.18.33 to ≤ 6.18.*unaffected7.0.10 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/3d3b89e6ab93bdd0efd45828bda6b0e61cc46dff ↗
- https://git.kernel.org/stable/c/484357dff256c816d9466bda35eb765685e4dc86 ↗
- https://git.kernel.org/stable/c/11207e42a332eb8bbcb9fe74df9edd2a807c5607 ↗
- https://git.kernel.org/stable/c/fed8b8f33a46db0ee2efdb000f4f630c86ed8ca4 ↗
- https://git.kernel.org/stable/c/a76511bc654819425d3b15e77b523d7f9d81f064 ↗
- https://git.kernel.org/stable/c/3104a3f40feb107f77d7116ad9bf6c210ab7babf ↗
- https://git.kernel.org/stable/c/f1dc8e72de9aabe5d96767a4e97219ac26b79fe5 ↗
- https://git.kernel.org/stable/c/f2a880e802ad12d1e38039d1334fb1475d0f5241 ↗