CVE-2022-49196 powerpc/pseries: Fix use after free in remove_phb_dynamic()

In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Fix use after free in removephbdynamic In removephbdynamic we use &phb-ioresource, after we've called deviceunregister&hostbridge-dev. But the unregister may have freed phb, because pcibiosfreecontrollerdeferred ...

CVE-2022-49196

The CVE-2022-49196 issue affects the Linux kernel (powerpc/pseries) and is a use-after-free in remove_phb_dynamic() where phb may be freed after device_unregister() frees host_bridge, potentially crashing with slub_debug/page_poison. The workaround described is to hold a reference to host_bridge-...

CVE-2022-49196 powerpc/pseries: Fix use after free in remove_phb_dynamic()

In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Fix use after free in removephbdynamic In removephbdynamic we use &phb-ioresource, after we've called deviceunregister&hostbridge-dev. But the unregister may have freed phb, because pcibiosfreecontrollerdeferred ...

CVE-2022-49164 powerpc/tm: Fix more userspace r13 corruption

In the Linux kernel, the following vulnerability has been resolved: powerpc/tm: Fix more userspace r13 corruption Commit cf13435b730a "powerpc/tm: Fix userspace r13 corruption" fixes a problem in treclaim where a SLB miss can occur on the threadstruct-ckptregs while SCRATCH0 is live with the save...

CVE-2022-49164

In the Linux kernel, the following vulnerability has been resolved: powerpc/tm: Fix more userspace r13 corruption Commit cf13435b730a "powerpc/tm: Fix userspace r13 corruption" fixes a problem in treclaim where a SLB miss can occur on the threadstruct-ckptregs while SCRATCH0 is live with the save...

CVE-2022-49164

CVE-2022-49164 describes a Linux kernel vulnerability on PowerPC with TM (transaction memory) that could corrupt the user r13 register due to a SLB miss during treclaim/trechkpt handling. The issue occurs when SCRATCH0 is live with the saved user r13 value, which can be clobbered by the kernel r1...

CVE-2022-49164 powerpc/tm: Fix more userspace r13 corruption

In the Linux kernel, the following vulnerability has been resolved: powerpc/tm: Fix more userspace r13 corruption Commit cf13435b730a "powerpc/tm: Fix userspace r13 corruption" fixes a problem in treclaim where a SLB miss can occur on the threadstruct-ckptregs while SCRATCH0 is live with the save...

CVE-2022-49113

In the Linux kernel, the following vulnerability has been resolved: powerpc/secvar: fix refcount leak in formatshow Refcount leak will happen when formatshow returns failure in multiple cases. Unified management of ofnodeput can fix this problem...

CVE-2022-49113 powerpc/secvar: fix refcount leak in format_show()

In the Linux kernel, the following vulnerability has been resolved: powerpc/secvar: fix refcount leak in formatshow Refcount leak will happen when formatshow returns failure in multiple cases. Unified management of ofnodeput can fix this problem...

CVE-2022-49113 powerpc/secvar: fix refcount leak in format_show()

In the Linux kernel, the following vulnerability has been resolved: powerpc/secvar: fix refcount leak in formatshow Refcount leak will happen when formatshow returns failure in multiple cases. Unified management of ofnodeput can fix this problem...

CVE-2022-49113

CVE-2022-49113 — In the Linux kernel, a refcount leak in powerpc/secvar, specifically in format_show(), is fixed. The leak can occur when format_show returns failure in multiple paths. The mitigation is the unified management of of_node_put to correct the leak. The available connected sources con...

CVE-2022-49113 powerpc/secvar: fix refcount leak in format_show()

In the Linux kernel, the following vulnerability has been resolved: powerpc/secvar: fix refcount leak in formatshow Refcount leak will happen when formatshow returns failure in multiple cases. Unified management of ofnodeput can fix this problem...

CVE-2022-49067

In the Linux kernel, the following vulnerability has been resolved: powerpc: Fix virtaddrvalid for 64-bit Book3E & 32-bit mpe: On 64-bit Book3E vmalloc space starts at 0x8000000000000000. Because of the way pa works we have: pa0x8000000000000000 == 0, and therefore virttopfn0x8000000000000000 == ...

CVE-2022-49067 powerpc: Fix virt_addr_valid() for 64-bit Book3E & 32-bit

In the Linux kernel, the following vulnerability has been resolved: powerpc: Fix virtaddrvalid for 64-bit Book3E & 32-bit mpe: On 64-bit Book3E vmalloc space starts at 0x8000000000000000. Because of the way pa works we have: pa0x8000000000000000 == 0, and therefore virttopfn0x8000000000000000 == ...

CVE-2022-49067

CVE-2022-49067 is about a Linux kernel issue where virt_addr_valid() incorrectly returned true for vmalloc addresses in 64-bit Book3E (and related 32-bit behavior). Investigations across multiple advisories (NVD, Red Hat, Debian OSV, Unity/NASL/Nessus plugins) describe the root cause: __pa() can ...

CVE-2022-49067 powerpc: Fix virt_addr_valid() for 64-bit Book3E & 32-bit

In the Linux kernel, the following vulnerability has been resolved: powerpc: Fix virtaddrvalid for 64-bit Book3E & 32-bit mpe: On 64-bit Book3E vmalloc space starts at 0x8000000000000000. Because of the way pa works we have: pa0x8000000000000000 == 0, and therefore virttopfn0x8000000000000000 == ...

CVE-2021-47640

CVE-2021-47640 describes a Linux kernel vulnerability in the powerpc/KASAN pathway where the shadow page table was not updated correctly when PTE_RPN_SHIFT = 24 and PAGE_SHIFT = 12. The issue caused false positives and false negatives in KASAN reports (vmalloc-out-of-bounds in pcpu_alloc) and was...

CVE-2021-47640 powerpc/kasan: Fix early region not updated correctly

In the Linux kernel, the following vulnerability has been resolved: powerpc/kasan: Fix early region not updated correctly The shadow's page table is not updated when PTERPNSHIFT is 24 and PAGESHIFT is 12. It not only causes false positives but also false negative as shown the following text. Fix ...

CVE-2021-47632

CVE-2021-47632 affects the Linux kernel on PowerPC where a spin_lock in change_page_attr() for set_memory caused spinlock recursion. The fix removes the read/modify/write sequence and the spin_lock(), and uses atomic handling of page-flag sets (_PAGE_KERNEL_RO/ROX/RW/RWX) by comparing flag sets t...

CVE-2021-47632 powerpc/set_memory: Avoid spinlock recursion in change_page_attr()

In the Linux kernel, the following vulnerability has been resolved: powerpc/setmemory: Avoid spinlock recursion in changepageattr Commit 1f9ad21c3b38 "powerpc/mm: Implement setmemory routines" included a spinlock to changepageattr in order to safely perform the three step operations. But then...