CVE-2025-38723— LoongArch: BPF: Fix jump offset calculation in tailcall
Affected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 5dc615520c4dfb358245680f1904bad61116648e< 1a782fa32e644aa9fbae6c8488f3e61221ac96e1 | affected |
5dc615520c4dfb358245680f1904bad61116648e< 17c010fe45def335fe03a0718935416b04c7f349 | affected | ||
5dc615520c4dfb358245680f1904bad61116648e< f83d469e16bb1f75991ca67c56786fb2aaa42bea | affected | ||
5dc615520c4dfb358245680f1904bad61116648e< f2b5e50cc04d7a049b385bc1c93b9cbf5f10c94f | affected | ||
5dc615520c4dfb358245680f1904bad61116648e< 9262e3e04621558e875eb5afb5e726b648cd5949 | affected | ||
5dc615520c4dfb358245680f1904bad61116648e< cd39d9e6b7e4c58fa77783e7aedf7ada51d02ea3 | affected | ||
6.1 | affected | ||
< 6.1 | unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2025-38723
Vulnerability Information
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Vulnerability Title
LoongArch: BPF: Fix jump offset calculation in tailcall
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Fix jump offset calculation in tailcall The extra pass of bpf_int_jit_compile() skips JIT context initialization which essentially skips offset calculation leaving out_offset = -1, so the jmp_offset in emit_bpf_tail_call is calculated by "#define jmp_offset (out_offset - (cur_offset))" is a negative number, which is wrong. The final generated assembly are as follow. 54: bgeu $a2, $t1, -8 # 0x0000004c 58: addi.d $a6, $s5, -1 5c: bltz $a6, -16 # 0x0000004c 60: alsl.d $t2, $a2, $a1, 0x3 64: ld.d $t2, $t2, 264 68: beq $t2, $zero, -28 # 0x0000004c Before apply this patch, the follow test case will reveal soft lock issues. cd tools/testing/selftests/bpf/ ./test_progs --allow=tailcalls/tailcall_bpf2bpf_1 dmesg: watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [test_progs:25056]
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LoongArch架构BPF尾调用中跳转偏移计算错误，可能导致软锁定。
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
II. Public POCs for CVE-2025-38723
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-09-04 · 52 CVEs total
| CVE-2025-38693 | media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_t | |
| CVE-2025-38679 | media: venus: Fix OOB read due to missing payload bound check | |
| CVE-2025-38680 | media: uvcvideo: Fix 1-byte out-of-bounds read in uvc_parse_format() | |
| CVE-2025-38685 | fbdev: Fix vmalloc out-of-bounds write in fast_imageblit | |
| CVE-2025-38682 | i2c: core: Fix double-free of fwnode in i2c_unregister_device() | |
| CVE-2025-38683 | hv_netvsc: Fix panic during namespace deletion with VF | |
| CVE-2025-38684 | net/sched: ets: use old 'nbands' while purging unused classes | |
| CVE-2025-38681 | mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd() | |
| CVE-2025-38692 | exfat: add cluster chain loop check for dir | |
| CVE-2025-38694 | media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb() | |
| CVE-2025-38690 | drm/xe/migrate: prevent infinite recursion | |
| CVE-2025-38695 | scsi: lpfc: Check for hdwq null ptr when cleaning up lpfc_vport structure | |
| CVE-2025-38696 | MIPS: Don't crash in stack_top() for tasks without ABI or vDSO | |
| CVE-2025-38697 | jfs: upper bound check of tree index in dbAllocAG | |
| CVE-2025-38699 | scsi: bfa: Double-free fix | |
| CVE-2025-38698 | jfs: Regular file corruption check | |
| CVE-2025-38700 | scsi: libiscsi: Initialize iscsi_conn->dd_data only if memory is allocated | |
| CVE-2025-38701 | ext4: do not BUG when INLINE_DATA_FL lacks system.data xattr | |
| CVE-2025-38702 | fbdev: fix potential buffer overflow in do_register_framebuffer() | |
| CVE-2025-38703 | drm/xe: Make dma-fences compliant with the safe access rules |
Showing top 20 of 52 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length - CVE-2026-43489
liveupdate: luo_file: remember retrieve() status - CVE-2026-43487
ata: libata-core: Disable LPM on ST1000DM010-2EP102 - CVE-2026-43488
usb: xhci: Prevent interrupt storm on host controller error
Same vendor: Linux
- CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length - CVE-2026-43489
liveupdate: luo_file: remember retrieve() status - CVE-2026-43487
ata: libata-core: Disable LPM on ST1000DM010-2EP102 - CVE-2026-43488
usb: xhci: Prevent interrupt storm on host controller error
V. Comments for CVE-2025-38723
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