Description
The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status page(s) via XENMEM_add_to_physmap. Some of the status pages may then be freed while mappings of them would still be inserted into the guest's secondary (P2M) page tables.
Mitigation
Minimal update. May introduce new vulnerabilities or breaking changes.
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 debian 11 | | =4.14.2+25-gb6a8c4f72d-2 || =4.14.3+32-g9de3671772-1 || =4.14.3+32-g9de3671772-1~deb11u1 || =4.14.3-1 || =4.14.3-1~deb11u1 || =4.14.4+74-gd7b22226b5-1 || =4.14.5+24-g87d90d511c-1 || =4.14.5+86-g1c354767d5-1 || =4.14.5+94-ge49571868d-1 || =4.14.6-1 || =4.16.0+51-g0941d6cb-1 || =4.16.0-1~exp1 || =4.16.1-1 || =4.16.2+90-g0d39a6d1ae-1 || =4.16.2-1 || =4.16.2-2 || =4.17.0+24-g2f8851c37f-2 || =4.17.0+24-g2f8851c37f-2~exp1 || =4.17.0+46-gaaf74a532c-1 || =4.17.0+74-g3eac216e6e-1 || =4.17.0-1 || =4.17.0~rc4-1~exp1 || =4.17.1+2-gb773c48e36-1 || =4.17.2+55-g0b56bed864-1 || =4.17.2+76-ge1f9cb16e2-1 || =4.17.2+76-ge1f9cb16e2-1~deb12u1 || =4.17.2-1 || =4.17.3+10-g091466ba55-1 || =4.17.3+10-g091466ba55-1.1 || =4.17.3+10-g091466ba55-1.1~exp1 || =4.17.3+10-g091466ba55-1.1~exp2 || =4.17.3+10-g091466ba55-1~deb12u1 || =4.17.3+36-g54dacb5c02-1 || =4.17.5+23-ga4e5191dc0-1 || =4.17.5+72-g01140da4e8-1 || =4.19.0+14-g0918434e0f-1~exp1 || =4.19.1-1 || =4.19.1-1~exp1 || =4.19.1-1~exp4 || =4.20.0+68-g35cb38b222-1 || =4.20.0-1 || =4.20.0~rc2+1-gfcde5e0de8-1~exp1 || =4.20.2+37-g61ff35323e-1 || =4.20.2+7-g1badcf5035-1 || =4.20.2+7-g1badcf5035-2 | - |
debian 13 | | =4.20.0+68-g35cb38b222-1 || =4.20.2+37-g61ff35323e-0+deb13u1 || =4.20.2+37-g61ff35323e-1 || =4.20.2+7-g1badcf5035-0+deb13u1 || =4.20.2+7-g1badcf5035-1 || =4.20.2+7-g1badcf5035-2 | - |
debian 14 | | =4.20.0+68-g35cb38b222-1 || =4.20.2+37-g61ff35323e-1 || =4.20.2+7-g1badcf5035-1 || =4.20.2+7-g1badcf5035-2 | - |
debian 12 | | =4.17.1+2-gb773c48e36-1 || =4.17.2+55-g0b56bed864-1 || =4.17.2+76-ge1f9cb16e2-1 || =4.17.2+76-ge1f9cb16e2-1~deb12u1 || =4.17.2-1 || =4.17.3+10-g091466ba55-1 || =4.17.3+10-g091466ba55-1.1 || =4.17.3+10-g091466ba55-1.1~exp1 || =4.17.3+10-g091466ba55-1.1~exp2 || =4.17.3+10-g091466ba55-1~deb12u1 || =4.17.3+36-g54dacb5c02-1 || =4.17.5+23-ga4e5191dc0-1 || =4.17.5+23-ga4e5191dc0-1+deb12u1 || =4.17.5+72-g01140da4e8-1 || =4.19.0+14-g0918434e0f-1~exp1 || =4.19.1-1 || =4.19.1-1~exp1 || =4.19.1-1~exp4 || =4.20.0+68-g35cb38b222-1 || =4.20.0-1 || =4.20.0~rc2+1-gfcde5e0de8-1~exp1 || =4.20.2+37-g61ff35323e-1 || =4.20.2+7-g1badcf5035-1 || =4.20.2+7-g1badcf5035-2 | - |
 alpine v3.20 | | | 4.18.5-r7 |
alpine v3.21 | | | 4.19.5-r2 |
alpine v3.22 | | | 4.20.3-r2 |
alpine v3.23 | | | 4.20.3-r2 |
