cve-2024-42246
Vulnerability from cvelistv5
Published
2024-08-07 15:14
Modified
2024-12-19 09:14
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket When using a BPF program on kernel_connect(), the call can return -EPERM. This causes xs_tcp_setup_socket() to loop forever, filling up the syslog and causing the kernel to potentially freeze up. Neil suggested: This will propagate -EPERM up into other layers which might not be ready to handle it. It might be safer to map EPERM to an error we would be more likely to expect from the network system - such as ECONNREFUSED or ENETDOWN. ECONNREFUSED as error seems reasonable. For programs setting a different error can be out of reach (see handling in 4fbac77d2d09) in particular on kernels which do not have f10d05966196 ("bpf: Make BPF_PROG_RUN_ARRAY return -err instead of allow boolean"), thus given that it is better to simply remap for consistent behavior. UDP does handle EPERM in xs_udp_send_request().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02ee1976edb21a96ce8e3fd4ef563f14cc16d041
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d8254e012996cee1a0f9cc920531cb7e4d9a011
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/626dfed5fa3bfb41e0dffd796032b555b69f9cdePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/934247ea65bc5eca8bdb7f8c0ddc15cef992a5d6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc790261218952635f846aaf90bcc0974f6f62c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d6c686c01c5f12ff8f7264e0ddf71df6cb0d4414Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f2431e7db0fe0daccb2f06bb0d23740affcd2fa6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f388cfd913a2b96c05339a335f365795db1b36b6Patch
Impacted products
Vendor Product Version
Linux Linux Version: 4.17
Show details on NVD website

To clipboard 

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                "id": "CVE-2024-42246",
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    "dateReserved": "2024-07-30T07:40:12.254Z",
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  }
}


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