CVE-2023-54058

Status: DeferredUnscored—

In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_ffa: Check if ffa_driver remove is present before executing

Currently ffa_drv->remove() is called unconditionally from ffa_device_remove(). Since the driver registration doesn't check for it and allows it to be registered without .remove callback, we need to check for the presence of it before executing it from ffa_device_remove() to above a NULL pointer dereference like the one below:

Technical details traces, logs and code from the original report

  | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
  | Mem abort info:
  |   ESR = 0x0000000086000004
  |   EC = 0x21: IABT (current EL), IL = 32 bits
  |   SET = 0, FnV = 0
  |   EA = 0, S1PTW = 0
  |   FSC = 0x04: level 0 translation fault
  | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000881cc8000
  | [0000000000000000] pgd=0000000000000000, p4d=0000000000000000
  | Internal error: Oops: 0000000086000004 [#1] PREEMPT SMP
  | CPU: 3 PID: 130 Comm: rmmod Not tainted 6.3.0-rc7 #6
  | Hardware name: FVP Base RevC (DT)
  | pstate: 63402809 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=-c)
  | pc : 0x0
  | lr : ffa_device_remove+0x20/0x2c
  | Call trace:
  |  0x0
  |  device_release_driver_internal+0x16c/0x260
  |  driver_detach+0x90/0xd0
  |  bus_remove_driver+0xdc/0x11c
  |  driver_unregister+0x30/0x54
  |  ffa_driver_unregister+0x14/0x20
  |  cleanup_module+0x18/0xeec
  |  __arm64_sys_delete_module+0x234/0x378
  |  invoke_syscall+0x40/0x108
  |  el0_svc_common+0xb4/0xf0
  |  do_el0_svc+0x30/0xa4
  |  el0_svc+0x2c/0x7c
  |  el0t_64_sync_handler+0x84/0xf0
  |  el0t_64_sync+0x190/0x194

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.24%
Percentile among all scored CVEs: 14
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2023-54058",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "244f5d597e1ea519c2085fbd9819458688775e42",
              "lessThan": "6a26c62625c59b8dd7f52c518cb4f60a63470a0e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "244f5d597e1ea519c2085fbd9819458688775e42",
              "lessThan": "ad73dc7263ea90302d6c7eeb7e9f7cbcfa0b0617",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "244f5d597e1ea519c2085fbd9819458688775e42",
              "lessThan": "48399c297c46b4c8e77ebcf071bb586a42d0ca4e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "244f5d597e1ea519c2085fbd9819458688775e42",
              "lessThan": "b71b55248a580e9c9befc4ae060539f1f8e477da",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "06560ba731e2775441c6dc9f0bf39f9f3606fbb7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5.14.14",
              "lessThan": "5.15",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/firmware/arm_ffa/bus.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.114",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.31",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.3.5",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/firmware/arm_ffa/bus.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:16:07.590",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/48399c297c46b4c8e77ebcf071bb586a42d0ca4e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6a26c62625c59b8dd7f52c518cb4f60a63470a0e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ad73dc7263ea90302d6c7eeb7e9f7cbcfa0b0617",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b71b55248a580e9c9befc4ae060539f1f8e477da",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Check if ffa_driver remove is present before executing\n\nCurrently ffa_drv->remove() is called unconditionally from\nffa_device_remove(). Since the driver registration doesn't check for it\nand allows it to be registered without .remove callback, we need to check\nfor the presence of it before executing it from ffa_device_remove() to\nabove a NULL pointer dereference like the one below:\n\n  | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n  | Mem abort info:\n  |   ESR = 0x0000000086000004\n  |   EC = 0x21: IABT (current EL), IL = 32 bits\n  |   SET = 0, FnV = 0\n  |   EA = 0, S1PTW = 0\n  |   FSC = 0x04: level 0 translation fault\n  | user pgtable: 4k pages, 48-bit VAs, pgdp=0000000881cc8000\n  | [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n  | Internal error: Oops: 0000000086000004 [#1] PREEMPT SMP\n  | CPU: 3 PID: 130 Comm: rmmod Not tainted 6.3.0-rc7 #6\n  | Hardware name: FVP Base RevC (DT)\n  | pstate: 63402809 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=-c)\n  | pc : 0x0\n  | lr : ffa_device_remove+0x20/0x2c\n  | Call trace:\n  |  0x0\n  |  device_release_driver_internal+0x16c/0x260\n  |  driver_detach+0x90/0xd0\n  |  bus_remove_driver+0xdc/0x11c\n  |  driver_unregister+0x30/0x54\n  |  ffa_driver_unregister+0x14/0x20\n  |  cleanup_module+0x18/0xeec\n  |  __arm64_sys_delete_module+0x234/0x378\n  |  invoke_syscall+0x40/0x108\n  |  el0_svc_common+0xb4/0xf0\n  |  do_el0_svc+0x30/0xa4\n  |  el0_svc+0x2c/0x7c\n  |  el0t_64_sync_handler+0x84/0xf0\n  |  el0t_64_sync+0x190/0x194"
    }
  ],
  "lastModified": "2026-06-17T06:46:43.647",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}