CVE-2023-20582

Improper handling of invalid nested page table entries in the IOMMU may allow a privileged attacker to induce page table entry PTE faults to bypass RMP checks in SEV-SNP, potentially leading to a loss of guest memory integrity...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: IB/core: Fixed the issue with the cleanup of the ibcachesetupone function. When ibcacheupdate returns an error, the ibcachesetupone function is exited immediately without proper cleanup. This occurs even though we have already...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fixed the issue of freeing the HMB descriptor table. The HMB descriptor table is sized based on the maximum number of descriptors that can be used for a given device. However, nvmeallochostmem might break out of the loo...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: netfilter: iptables: Fixed null-ptr-deref in iptablenattableinit. We received a report that iptables-restore sometimes triggered null-ptr-deref at boot time. 0 The problem is that iptablenattableinit is exposed to user space befo...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: vpvdpa: fixed the issue where the idtable array was not terminated with a null terminator. Also, an additional virtiodeviceid was allocated as a null terminator. Otherwise, vdpamgmtdevgetclasses might iterate multiple times an...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: arm64: asm-bug: Add .align 2 to the end of BUGENTRY. When CONFIGDEBUGBUGVERBOSE=n, we fail to add the necessary padding bytes to the bugtable entries. As a result, the last entry in a bug table will be ignored, potentially leadin...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fixed the issue where a tainted pointer was deleted instead of the previously created rules when the flow rule creation failed. This issue occurs when the mlx5lagcreateportseltable function fails to create flow rules...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm: Avoid leaving partial pfn mappings in error cases. As Jann points out, PFN mappings are special. Unlike normal memory mappings, there is no lifetime information associated with the mapping—it’s simply a raw mapping of PFNs,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cpufreq: The exit callback is optional. The exit callback is not required and should not be called without first checking a valid pointer. Additionally, we must clear the freqtable pointer even if the exit callback is not present...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: xhci: Fixed a issue where a NULL pointer dereference could occur during full-speed re-enumeration of devices. This occurs when re-enumering full-speed devices after a failed “address device” command. Full-speed devices may need t...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: soc: qcom: geni-se: fixed an array underflow issue in geniseclktblget. This loop is supposed to break if the frequency returned by clkroundrate is the same as that of the previous iteration. However, that check doesn’t make sense...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: mm/pagetablecheck: A crash occurred when checking ZONEDEVICE. Not all pages apply to the pgtable check. An example is ZONEDEVICE pages: they directly map PFNs, and they never allocate pageext, even if there’s a struct page around...

Astra Linux – Vulnerability in hdf5

HDF5 through 1.14.3 contains a heap buffer overflow issue in H5Aattrreleasetable, which leads to the corruption of the instruction pointer and causes denial of service or potential code execution...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ksmbd: Fixed an issue related to “slab-use-after-free” in ksmbdsmb2sessioncreate. There is a race condition between ksmbdsmb2sessioncreate and ksmbdexpiresession. This patch adds the necessary sessionstablelock during the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: drm/i915/dpt: Makes the DPT object unshrinkable. In some scenarios, the DPT object is shrunk, but the actual framebuffer does not undergo any shrinkage. As a result, the DPT object remains in the DPT’s vm-boundlist. Then, an...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: mctp i2c: handling of NULL header addresses daddr can be NULL if there is no neighbour table entry present; in that case, the TX packet should be discarded. saddr is usually set by the MCTP core, but NULL values are also...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Ignore nCR34:0 when loading PDPTEs from memory Ignore nCR34:0 when loading PDPTEs from memory for nested SVMs. When PAE paging is used, the bits 4:0 of the CR3 register are ignored, and thus VMRUN does not enforce a...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: s390/uv: Do not call foliowaitwriteback without a folio reference. foliowaitwriteback requires that no spinlocks are held and that a folio reference is held, as documented. After we removed the PTL, the folio object could be free...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nftables: Unconditionally flushes pending work before the notifier syzbot reports: KASAN: Slab-uaf in nftctxupdate, include/net/netfilter/nftables.h: 1831 KASAN: Slab-uaf in nftcommitrelease,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: drivers/virt/acrn: Fixed the PFNMAP PTE checks in acrnvmrammap. The patch series “mm: Improvements to followpte and fixes for acrn followpte”. Patch 1 fixes a number of issues I identified in the acrn driver. It’s just compile...