جزئیات آسیب‌پذیری
CVE-2026-52933
Linux LinuxSiemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFPSiemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPSiemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
io_uring/poll: fix signed comparison in io_poll_get_ownership()
CVSS 3.1
7.8بالا
شرح رسمی (انگلیسی)
In the Linux kernel, the following vulnerability has been resolved: io_uring/poll: fix signed comparison in io_poll_get_ownership() io_poll_get_ownership() uses a signed comparison to check whether poll_refs has reached the threshold for the slowpath: if (unlikely(atomic_read(&req->poll_refs) >= IO_POLL_REF_BIAS)) atomic_read() returns int (signed). When IO_POLL_CANCEL_FLAG (BIT(31)) is set in poll_refs, the value becomes negative in signed arithmetic, so the >= 128 comparison always evaluates to false and the slowpath is never taken. Fix this by casting the atomic_read() result to unsigned int before the comparison, so that the cancel flag is treated as a large positive value and correctly triggers the slowpath.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 7.8بالا | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| Linux | Linux | 4b702b7d11ce1b9d26fc6d7c5a7ef4ac1d455048 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | bc4e6ee16778149811333a969a7a893d4cc110c5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5.15.82 ≤ v < 5.16 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.0.11 ≤ v < 6.1 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | a26a35e9019fd70bf3cf647dcfdae87abc7bacea ≤ v < 326941b22806cbf2df1fbfe902b7908b368cce42 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | a26a35e9019fd70bf3cf647dcfdae87abc7bacea ≤ v < 81bf96b0abbfa4cd47ea32e12596aed3855fb2f3 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | a26a35e9019fd70bf3cf647dcfdae87abc7bacea ≤ v < cf522703d4f194991615763697ae25a3f9539763 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | a26a35e9019fd70bf3cf647dcfdae87abc7bacea ≤ v < fc47043f3d9af3efa407665b47f8378ec691ba18 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | a26a35e9019fd70bf3cf647dcfdae87abc7bacea ≤ v < ea0697129807d718037f618221037aa0660ee3c5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | a26a35e9019fd70bf3cf647dcfdae87abc7bacea ≤ v < c6d191164dc81838d8dbf452a6000f68c558d1ae | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.6 ≤ v | CVEProject cvelistV5 (CNA) |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | V3.1.7 ≤ v | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۸- https://git.kernel.org/stable/c/81bf96b0abbfa4cd47ea32e12596aed3855fb2f3
- https://git.kernel.org/stable/c/cf522703d4f194991615763697ae25a3f9539763
- https://git.kernel.org/stable/c/fc47043f3d9af3efa407665b47f8378ec691ba18
- https://git.kernel.org/stable/c/ea0697129807d718037f618221037aa0660ee3c5
- https://git.kernel.org/stable/c/c6d191164dc81838d8dbf452a6000f68c558d1ae
- https://git.kernel.org/stable/c/326941b22806cbf2df1fbfe902b7908b368cce42
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
هشدار CVEهای بعدی این محصولمحصول را دنبال کنید تا آسیب‌پذیری‌های تازه را در تلگرام بگیرید.
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۴/۰۳
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۷/۲۷
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- Linux
پیش‌بینی بهره‌برداری (EPSS)
۰٫۱۴٪
احتمال بهره‌برداری در ۳۰ روز
۴٪
صدک (نسبت به همه‌ی CVEها)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- خیر
- وضعیت بهره‌برداری
- ندارد
- اثر فنی
- کامل
ضعف‌ها (CWE)
- CWE-190Integer Overflow or Wraparound