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CVE-2024-46682— nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open

EPSS 0.02% · P5
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I. Basic Information for CVE-2024-46682

Vulnerability Information
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Vulnerability Title
nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open Prior to commit 3f29cc82a84c ("nfsd: split sc_status out of sc_type") states_show() relied on sc_type field to be of valid type before calling into a subfunction to show content of a particular stateid. From that commit, we split the validity of the stateid into sc_status and no longer changed sc_type to 0 while unhashing the stateid. This resulted in kernel oopsing for nfsv4.0 opens that stay around and in nfs4_show_open() would derefence sc_file which was NULL. Instead, for closed open stateids forgo displaying information that relies of having a valid sc_file. To reproduce: mount the server with 4.0, read and close a file and then on the server cat /proc/fs/nfsd/clients/2/states [ 513.590804] Call trace: [ 513.590925] _raw_spin_lock+0xcc/0x160 [ 513.591119] nfs4_show_open+0x78/0x2c0 [nfsd] [ 513.591412] states_show+0x44c/0x488 [nfsd] [ 513.591681] seq_read_iter+0x5d8/0x760 [ 513.591896] seq_read+0x188/0x208 [ 513.592075] vfs_read+0x148/0x470 [ 513.592241] ksys_read+0xcc/0x178
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 代码问题漏洞
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存在代码问题漏洞，该漏洞源于在处理已关闭的NFSv4.0文件时未能正确处理状态ID，可能导致内核崩溃。
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 3f29cc82a84c23cfd12b903029dd26002ca825f5 ~ ba0b697de298285301c71c258598226e06494236 -
LinuxLinux 6.9 -

II. Public POCs for CVE-2024-46682

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III. Intelligence Information for CVE-2024-46682

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Same Patch Batch · Linux · 2024-09-13 · 40 CVEs total

CVE-2024-46704workqueue: Fix spruious data race in __flush_work()
CVE-2024-46694drm/amd/display: avoid using null object of framebuffer
CVE-2024-46696nfsd: fix potential UAF in nfsd4_cb_getattr_release
CVE-2024-46695selinux,smack: don't bypass permissions check in inode_setsecctx hook
CVE-2024-46698video/aperture: optionally match the device in sysfb_disable()
CVE-2024-46697nfsd: ensure that nfsd4_fattr_args.context is zeroed out
CVE-2024-46699drm/v3d: Disable preemption while updating GPU stats
CVE-2024-46701libfs: fix infinite directory reads for offset dir
CVE-2024-46702thunderbolt: Mark XDomain as unplugged when router is removed
CVE-2024-46703Revert "serial: 8250_omap: Set the console genpd always on if no console suspend"
CVE-2024-46692firmware: qcom: scm: Mark get_wq_ctx() as atomic call
CVE-2024-46705drm/xe: reset mmio mappings with devm
CVE-2024-46706tty: serial: fsl_lpuart: mark last busy before uart_add_one_port
CVE-2024-46707KVM: arm64: Make ICC_*SGI*_EL1 undef in the absence of a vGICv3
CVE-2024-46709drm/vmwgfx: Fix prime with external buffers
CVE-2024-46708pinctrl: qcom: x1e80100: Fix special pin offsets
CVE-2024-46710drm/vmwgfx: Prevent unmapping active read buffers
CVE-2024-46711mptcp: pm: fix ID 0 endp usage after multiple re-creations
CVE-2024-46712drm/vmwgfx: Disable coherent dumb buffers without 3d
CVE-2024-46713perf/aux: Fix AUX buffer serialization

Showing top 20 of 40 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-46682

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