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CVE-2024-26785— iommufd: Fix protection fault in iommufd_test_syz_conv_iova

EPSS 0.01% · P1
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I. Basic Information for CVE-2024-26785

Vulnerability Information
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Vulnerability Title
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix protection fault in iommufd_test_syz_conv_iova Syzkaller reported the following bug: general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7] Call Trace: lock_acquire lock_acquire+0x1ce/0x4f0 down_read+0x93/0x4a0 iommufd_test_syz_conv_iova+0x56/0x1f0 iommufd_test_access_rw.isra.0+0x2ec/0x390 iommufd_test+0x1058/0x1e30 iommufd_fops_ioctl+0x381/0x510 vfs_ioctl __do_sys_ioctl __se_sys_ioctl __x64_sys_ioctl+0x170/0x1e0 do_syscall_x64 do_syscall_64+0x71/0x140 This is because the new iommufd_access_change_ioas() sets access->ioas to NULL during its process, so the lock might be gone in a concurrent racing context. Fix this by doing the same access->ioas sanity as iommufd_access_rw() and iommufd_access_pin_pages() functions do.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存在竞争条件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 9227da7816dd1a42e20d41e2244cb63c205477ca ~ fd4d5cd7a2e8f08357c9bfc0905957cffe8ce568 -
LinuxLinux 6.6 -

II. Public POCs for CVE-2024-26785

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III. Intelligence Information for CVE-2024-26785

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Same Patch Batch · Linux · 2024-04-04 · 32 CVEs total

CVE-2024-26793gtp: fix use-after-free and null-ptr-deref in gtp_newlink()
CVE-2024-26809netfilter: nft_set_pipapo: release elements in clone only from destroy path
CVE-2024-26808netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain
CVE-2024-26807spi: cadence-qspi: fix pointer reference in runtime PM hooks
CVE-2024-26806spi: cadence-qspi: remove system-wide suspend helper calls from runtime PM hooks
CVE-2024-26805netlink: Fix kernel-infoleak-after-free in __skb_datagram_iter
CVE-2024-26804net: ip_tunnel: prevent perpetual headroom growth
CVE-2024-26803net: veth: clear GRO when clearing XDP even when down
CVE-2024-26802stmmac: Clear variable when destroying workqueue
CVE-2024-26800tls: fix use-after-free on failed backlog decryption
CVE-2024-26801Bluetooth: Avoid potential use-after-free in hci_error_reset
CVE-2024-26799ASoC: qcom: Fix uninitialized pointer dmactl
CVE-2024-26798fbcon: always restore the old font data in fbcon_do_set_font()
CVE-2024-26797drm/amd/display: Prevent potential buffer overflow in map_hw_resources
CVE-2024-26796drivers: perf: ctr_get_width function for legacy is not defined
CVE-2024-26795riscv: Sparse-Memory/vmemmap out-of-bounds fix
CVE-2024-26745powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV
CVE-2024-26792btrfs: fix double free of anonymous device after snapshot creation failure
CVE-2024-26791btrfs: dev-replace: properly validate device names
CVE-2024-26790dmaengine: fsl-qdma: fix SoC may hang on 16 byte unaligned read

Showing top 20 of 32 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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