ghsa-cghm-v6v8-jp7r
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
fsdax: Fix infinite loop in dax_iomap_rw()
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 iomap_iter+0x3a2/0x3d0
Modules linked in:
CPU: 10 PID: 964 Comm: tail Not tainted 5.19.0-rc7
Call Trace:
The tail command will call read() with a count of 0. In this case, iomap_iter() will report this WARNING, and always return 1 which casuing the infinite loop in dax_iomap_rw().
Fixing by checking count whether is 0 in dax_iomap_rw().
{ "affected": [], "aliases": [ "CVE-2022-48635" ], "database_specific": { "cwe_ids": [ "CWE-835" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-04-28T13:15:06Z", "severity": "MODERATE" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfsdax: Fix infinite loop in dax_iomap_rw()\n\nI got an infinite loop and a WARNING report when executing a tail command\nin virtiofs.\n\n WARNING: CPU: 10 PID: 964 at fs/iomap/iter.c:34 iomap_iter+0x3a2/0x3d0\n Modules linked in:\n CPU: 10 PID: 964 Comm: tail Not tainted 5.19.0-rc7\n Call Trace:\n \u003cTASK\u003e\n dax_iomap_rw+0xea/0x620\n ? __this_cpu_preempt_check+0x13/0x20\n fuse_dax_read_iter+0x47/0x80\n fuse_file_read_iter+0xae/0xd0\n new_sync_read+0xfe/0x180\n ? 0xffffffff81000000\n vfs_read+0x14d/0x1a0\n ksys_read+0x6d/0xf0\n __x64_sys_read+0x1a/0x20\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe tail command will call read() with a count of 0. In this case,\niomap_iter() will report this WARNING, and always return 1 which casuing\nthe infinite loop in dax_iomap_rw().\n\nFixing by checking count whether is 0 in dax_iomap_rw().", "id": "GHSA-cghm-v6v8-jp7r", "modified": "2024-07-03T18:37:11Z", "published": "2024-04-28T15:30:29Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48635" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/17d9c15c9b9e7fb285f7ac5367dfb5f00ff575e3" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/60644dffac87b1bb47bdb393aa29d5f2ffcf41a0" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/929ef155e1da41c06f4d8ca86ae12b851a83a744" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "type": "CVSS_V3" } ] }
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.