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CVE-2024-42246— net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket

EPSS 0.01% · P1
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I. Basic Information for CVE-2024-42246

Vulnerability Information
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Vulnerability Title
net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket
Source: NVD (National Vulnerability Database)
Vulnerability Description
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().
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 net, sunrpc 模块在xs_tcp_setup_socket中，如果连接失败，BPF程序可能会返回-EPERM，导致无限循环。
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 4fbac77d2d092b475dda9eea66da674369665427 ~ bc790261218952635f846aaf90bcc0974f6f62c6 -
LinuxLinux 4.17 -

II. Public POCs for CVE-2024-42246

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III. Intelligence Information for CVE-2024-42246

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Same Patch Batch · Linux · 2024-08-07 · 19 CVEs total

CVE-2024-42240x86/bhi: Avoid warning in #DB handler due to BHI mitigation
CVE-2024-42232libceph: fix race between delayed_work() and ceph_monc_stop()
CVE-2024-42234mm: fix crashes from deferred split racing folio migration
CVE-2024-42233filemap: replace pte_offset_map() with pte_offset_map_nolock()
CVE-2024-42235s390/mm: Add NULL pointer check to crst_table_free() base_crst_free()
CVE-2024-42236usb: gadget: configfs: Prevent OOB read/write in usb_string_copy()
CVE-2024-42237firmware: cs_dsp: Validate payload length before processing block
CVE-2024-42238firmware: cs_dsp: Return error if block header overflows file
CVE-2024-42239bpf: Fail bpf_timer_cancel when callback is being cancelled
CVE-2024-42250cachefiles: add missing lock protection when polling
CVE-2024-42242mmc: sdhci: Fix max_seg_size for 64KiB PAGE_SIZE
CVE-2024-42241mm/shmem: disable PMD-sized page cache if needed
CVE-2024-42244USB: serial: mos7840: fix crash on resume
CVE-2024-42243mm/filemap: make MAX_PAGECACHE_ORDER acceptable to xarray
CVE-2024-42245Revert "sched/fair: Make sure to try to detach at least one movable task"
CVE-2024-42247wireguard: allowedips: avoid unaligned 64-bit memory accesses
CVE-2024-42249spi: don't unoptimize message in spi_async()
CVE-2024-42248tty: serial: ma35d1: Add a NULL check for of_node

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42246

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