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CVE-2024-46744— Squashfs: sanity check symbolic link size

EPSS 0.01% · P2
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I. Basic Information for CVE-2024-46744

Vulnerability Information
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Vulnerability Title
Squashfs: sanity check symbolic link size
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Squashfs: sanity check symbolic link size Syzkiller reports a "KMSAN: uninit-value in pick_link" bug. This is caused by an uninitialised page, which is ultimately caused by a corrupted symbolic link size read from disk. The reason why the corrupted symlink size causes an uninitialised page is due to the following sequence of events: 1. squashfs_read_inode() is called to read the symbolic link from disk. This assigns the corrupted value 3875536935 to inode->i_size. 2. Later squashfs_symlink_read_folio() is called, which assigns this corrupted value to the length variable, which being a signed int, overflows producing a negative number. 3. The following loop that fills in the page contents checks that the copied bytes is less than length, which being negative means the loop is skipped, producing an uninitialised page. This patch adds a sanity check which checks that the symbolic link size is not larger than expected. -- V2: fix spelling mistake.
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，该漏洞源于未正确验证链接大小，可能导致未初始化的内存访问。
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 6545b246a2c815a8fcd07d58240effb6ec3481b1 ~ f82cb7f24032ed023fc67d26ea9bf322d8431a90 -
LinuxLinux 2.6.29 -

II. Public POCs for CVE-2024-46744

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III. Intelligence Information for CVE-2024-46744

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Same Patch Batch · Linux · 2024-09-18 · 85 CVEs total

CVE-2024-46770ice: Add netif_device_attach/detach into PF reset flow
CVE-2024-46781nilfs2: fix missing cleanup on rollforward recovery error
CVE-2024-46768hwmon: (hp-wmi-sensors) Check if WMI event data exists
CVE-2024-46769spi: intel: Add check devm_kasprintf() returned value
CVE-2024-46767net: phy: Fix missing of_node_put() for leds
CVE-2024-46765ice: protect XDP configuration with a mutex
CVE-2024-46763fou: Fix null-ptr-deref in GRO.
CVE-2024-46762xen: privcmd: Fix possible access to a freed kirqfd instance
CVE-2024-46761pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv
CVE-2024-46764bpf: add check for invalid name in btf_name_valid_section()
CVE-2024-46771can: bcm: Remove proc entry when dev is unregistered.
CVE-2024-46772drm/amd/display: Check denominator crb_pipes before used
CVE-2024-46773drm/amd/display: Check denominator pbn_div before used
CVE-2024-46774powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()
CVE-2024-46775drm/amd/display: Validate function returns
CVE-2024-46776drm/amd/display: Run DC_LOG_DC after checking link->link_enc
CVE-2024-46777udf: Avoid excessive partition lengths
CVE-2024-46778drm/amd/display: Check UnboundedRequestEnabled's value
CVE-2024-46779drm/imagination: Free pvr_vm_gpuva after unlink
CVE-2024-46780nilfs2: protect references to superblock parameters exposed in sysfs

Showing top 20 of 85 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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