CVE-2022-48635

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Source
https://cve.org/CVERecord?id=CVE-2022-48635
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48635.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-48635
Downstream
Published
2024-04-28T12:59:24.359Z
Modified
2026-03-13T06:48:18.101841Z
Severity
  • 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
fsdax: Fix infinite loop in dax_iomap_rw()
Details

In the Linux kernel, the following vulnerability has been resolved:

fsdax: Fix infinite loop in daxiomaprw()

I got an infinite loop and a WARNING report when executing a tail command in virtiofs.

WARNING: CPU: 10 PID: 964 at fs/iomap/iter.c:34 iomapiter+0x3a2/0x3d0 Modules linked in: CPU: 10 PID: 964 Comm: tail Not tainted 5.19.0-rc7 Call Trace: <TASK> daxiomap_rw+0xea/0x620 ? __thiscpupreemptcheck+0x13/0x20 fusedaxreaditer+0x47/0x80 fusefilereaditer+0xae/0xd0 newsyncread+0xfe/0x180 ? 0xffffffff81000000 vfsread+0x14d/0x1a0 ksys_read+0x6d/0xf0 __x64sysread+0x1a/0x20 dosyscall64+0x3b/0x90 entrySYSCALL64afterhwframe+0x63/0xcd

The tail command will call read() with a count of 0. In this case, iomapiter() will report this WARNING, and always return 1 which casuing the infinite loop in daxiomap_rw().

Fixing by checking count whether is 0 in daxiomaprw().

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48635.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8df4919cb921b28809d05feae3e98dc5d8b48146
Fixed
463f36137c40342fb03bba380c1bf703c40d89a6
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ca289e0b95afa973d204c77a4ad5c37e06145fbf
Fixed
929ef155e1da41c06f4d8ca86ae12b851a83a744
Fixed
60644dffac87b1bb47bdb393aa29d5f2ffcf41a0
Fixed
17d9c15c9b9e7fb285f7ac5367dfb5f00ff575e3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48635.json"