{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.176-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.94-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.12-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  net/smc: avoid NULL deref of conn-\u003elnk in smc_msg_event tracepoint  The smc_msg_event tracepoint class, shared by smc_tx_sendmsg and smc_rx_recvmsg, unconditionally dereferences smc-\u003econn.lnk:  \t__string(name, smc-\u003econn.lnk-\u003eibname)  conn-\u003elnk is only set for SMC-R; for SMC-D it is NULL. Other code on these paths already handles this (e.g. !conn-\u003elnk in SMC_STAT_RMB_TX_SIZE_SMALL()). With the tracepoint enabled, the first sendmsg()/recvmsg() on an SMC-D socket crashes:    Oops: general protection fault, probably for non-canonical address   KASAN: null-ptr-deref in range [...]   RIP: 0010:strlen+0x1e/0xa0   Call Trace:    trace_event_raw_event_smc_msg_event (net/smc/smc_tracepoint.h:44)    smc_rx_recvmsg (net/smc/smc_rx.c:515)    smc_recvmsg (net/smc/af_smc.c:2859)    __sys_recvfrom (net/socket.c:2315)    __x64_sys_recvfrom (net/socket.c:2326)    do_syscall_64  The faulting address 0x3e0 is offsetof(struct smc_link, ibname), confirming the NULL -\u003elnk deref. Enabling the tracepoint requires root, but the trigger itself is unprivileged: socket(AF_SMC, ...) has no capability check, and SMC-D negotiation needs no admin step on s390 or on x86 with the loopback ISM device loaded.  Log an empty device name for SMC-D instead of dereferencing NULL.",
  "id": "DEBIAN-CVE-2026-52941",
  "modified": "2026-09-14T16:47:37.241824976Z",
  "published": "2026-06-24T08:16:24.380Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-52941"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-52941"
  ]
}