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CVE-2025-37876 (GCVE-0-2025-37876)

Vulnerability from cvelistv5 – Published: 2025-05-09 06:45 – Updated: 2026-08-05 11:57
VLAI
Title
netfs: Only create /proc/fs/netfs with CONFIG_PROC_FS
Summary
In the Linux kernel, the following vulnerability has been resolved: netfs: Only create /proc/fs/netfs with CONFIG_PROC_FS When testing a special config: CONFIG_NETFS_SUPPORTS=y CONFIG_PROC_FS=n The system crashes with something like: [ 3.766197] ------------[ cut here ]------------ [ 3.766484] kernel BUG at mm/mempool.c:560! [ 3.766789] Oops: invalid opcode: 0000 [#1] SMP NOPTI [ 3.767123] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W [ 3.767777] Tainted: [W]=WARN [ 3.767968] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), [ 3.768523] RIP: 0010:mempool_alloc_slab.cold+0x17/0x19 [ 3.768847] Code: 50 fe ff 58 5b 5d 41 5c 41 5d 41 5e 41 5f e9 93 95 13 00 [ 3.769977] RSP: 0018:ffffc90000013998 EFLAGS: 00010286 [ 3.770315] RAX: 000000000000002f RBX: ffff888100ba8640 RCX: 0000000000000000 [ 3.770749] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 00000000ffffffff [ 3.771217] RBP: 0000000000092880 R08: 0000000000000000 R09: ffffc90000013828 [ 3.771664] R10: 0000000000000001 R11: 00000000ffffffea R12: 0000000000092cc0 [ 3.772117] R13: 0000000000000400 R14: ffff8881004b1620 R15: ffffea0004ef7e40 [ 3.772554] FS: 0000000000000000(0000) GS:ffff8881b5f3c000(0000) knlGS:0000000000000000 [ 3.773061] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.773443] CR2: ffffffff830901b4 CR3: 0000000004296001 CR4: 0000000000770ef0 [ 3.773884] PKRU: 55555554 [ 3.774058] Call Trace: [ 3.774232] <TASK> [ 3.774371] mempool_alloc_noprof+0x6a/0x190 [ 3.774649] ? _printk+0x57/0x80 [ 3.774862] netfs_alloc_request+0x85/0x2ce [ 3.775147] netfs_readahead+0x28/0x170 [ 3.775395] read_pages+0x6c/0x350 [ 3.775623] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.775928] page_cache_ra_unbounded+0x1bd/0x2a0 [ 3.776247] filemap_get_pages+0x139/0x970 [ 3.776510] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.776820] filemap_read+0xf9/0x580 [ 3.777054] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.777368] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.777674] ? find_held_lock+0x32/0x90 [ 3.777929] ? netfs_start_io_read+0x19/0x70 [ 3.778221] ? netfs_start_io_read+0x19/0x70 [ 3.778489] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.778800] ? lock_acquired+0x1e6/0x450 [ 3.779054] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.779379] netfs_buffered_read_iter+0x57/0x80 [ 3.779670] __kernel_read+0x158/0x2c0 [ 3.779927] bprm_execve+0x300/0x7a0 [ 3.780185] kernel_execve+0x10c/0x140 [ 3.780423] ? __pfx_kernel_init+0x10/0x10 [ 3.780690] kernel_init+0xd5/0x150 [ 3.780910] ret_from_fork+0x2d/0x50 [ 3.781156] ? __pfx_kernel_init+0x10/0x10 [ 3.781414] ret_from_fork_asm+0x1a/0x30 [ 3.781677] </TASK> [ 3.781823] Modules linked in: [ 3.782065] ---[ end trace 0000000000000000 ]--- This is caused by the following error path in netfs_init(): if (!proc_mkdir("fs/netfs", NULL)) goto error_proc; Fix this by adding ifdef in netfs_main(), so that /proc/fs/netfs is only created with CONFIG_PROC_FS.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab , < 2ef6eea2efce01d1956ace483216f6b6e26330c9 (git)
Affected: 7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab , < 6c4c5e0b96a90f2a11c378e66edc1f25165e10b6 (git)
Affected: 7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab , < 40cb48eba3b4b79e110c1a35d33a48cac54507a2 (git)
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Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.26 , ≤ 6.12.* (semver)
Unaffected: 6.14.5 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/netfs/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2ef6eea2efce01d1956ace483216f6b6e26330c9",
              "status": "affected",
              "version": "7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab",
              "versionType": "git"
            },
            {
              "lessThan": "6c4c5e0b96a90f2a11c378e66edc1f25165e10b6",
              "status": "affected",
              "version": "7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab",
              "versionType": "git"
            },
            {
              "lessThan": "40cb48eba3b4b79e110c1a35d33a48cac54507a2",
              "status": "affected",
              "version": "7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/netfs/main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.26",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.26",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.5",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Only create /proc/fs/netfs with CONFIG_PROC_FS\n\nWhen testing a special config:\n\nCONFIG_NETFS_SUPPORTS=y\nCONFIG_PROC_FS=n\n\nThe system crashes with something like:\n\n[    3.766197] ------------[ cut here ]------------\n[    3.766484] kernel BUG at mm/mempool.c:560!\n[    3.766789] Oops: invalid opcode: 0000 [#1] SMP NOPTI\n[    3.767123] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G        W\n[    3.767777] Tainted: [W]=WARN\n[    3.767968] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),\n[    3.768523] RIP: 0010:mempool_alloc_slab.cold+0x17/0x19\n[    3.768847] Code: 50 fe ff 58 5b 5d 41 5c 41 5d 41 5e 41 5f e9 93 95 13 00\n[    3.769977] RSP: 0018:ffffc90000013998 EFLAGS: 00010286\n[    3.770315] RAX: 000000000000002f RBX: ffff888100ba8640 RCX: 0000000000000000\n[    3.770749] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 00000000ffffffff\n[    3.771217] RBP: 0000000000092880 R08: 0000000000000000 R09: ffffc90000013828\n[    3.771664] R10: 0000000000000001 R11: 00000000ffffffea R12: 0000000000092cc0\n[    3.772117] R13: 0000000000000400 R14: ffff8881004b1620 R15: ffffea0004ef7e40\n[    3.772554] FS:  0000000000000000(0000) GS:ffff8881b5f3c000(0000) knlGS:0000000000000000\n[    3.773061] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[    3.773443] CR2: ffffffff830901b4 CR3: 0000000004296001 CR4: 0000000000770ef0\n[    3.773884] PKRU: 55555554\n[    3.774058] Call Trace:\n[    3.774232]  \u003cTASK\u003e\n[    3.774371]  mempool_alloc_noprof+0x6a/0x190\n[    3.774649]  ? _printk+0x57/0x80\n[    3.774862]  netfs_alloc_request+0x85/0x2ce\n[    3.775147]  netfs_readahead+0x28/0x170\n[    3.775395]  read_pages+0x6c/0x350\n[    3.775623]  ? srso_alias_return_thunk+0x5/0xfbef5\n[    3.775928]  page_cache_ra_unbounded+0x1bd/0x2a0\n[    3.776247]  filemap_get_pages+0x139/0x970\n[    3.776510]  ? srso_alias_return_thunk+0x5/0xfbef5\n[    3.776820]  filemap_read+0xf9/0x580\n[    3.777054]  ? srso_alias_return_thunk+0x5/0xfbef5\n[    3.777368]  ? srso_alias_return_thunk+0x5/0xfbef5\n[    3.777674]  ? find_held_lock+0x32/0x90\n[    3.777929]  ? netfs_start_io_read+0x19/0x70\n[    3.778221]  ? netfs_start_io_read+0x19/0x70\n[    3.778489]  ? srso_alias_return_thunk+0x5/0xfbef5\n[    3.778800]  ? lock_acquired+0x1e6/0x450\n[    3.779054]  ? srso_alias_return_thunk+0x5/0xfbef5\n[    3.779379]  netfs_buffered_read_iter+0x57/0x80\n[    3.779670]  __kernel_read+0x158/0x2c0\n[    3.779927]  bprm_execve+0x300/0x7a0\n[    3.780185]  kernel_execve+0x10c/0x140\n[    3.780423]  ? __pfx_kernel_init+0x10/0x10\n[    3.780690]  kernel_init+0xd5/0x150\n[    3.780910]  ret_from_fork+0x2d/0x50\n[    3.781156]  ? __pfx_kernel_init+0x10/0x10\n[    3.781414]  ret_from_fork_asm+0x1a/0x30\n[    3.781677]  \u003c/TASK\u003e\n[    3.781823] Modules linked in:\n[    3.782065] ---[ end trace 0000000000000000 ]---\n\nThis is caused by the following error path in netfs_init():\n\n        if (!proc_mkdir(\"fs/netfs\", NULL))\n                goto error_proc;\n\nFix this by adding ifdef in netfs_main(), so that /proc/fs/netfs is only\ncreated with CONFIG_PROC_FS."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is reached via ordinary file I/O (read/mmap/execve) on a locally mounted netfs-backed filesystem (9p, NFS, ceph, cifs, afs, erofs-ondemand), through `netfs_readahead`/`netfs_buffered_read_iter` \u2192 `netfs_alloc_request`. No remote peer input drives the faulting allocation, so local access is required.\nAC:H - Triggering requires the kernel to be built with `CONFIG_PROC_FS=n` (plus `CONFIG_NETFS_SUPPORT=y`), a non-default, EXPERT-only configuration that is rare in practice and entirely beyond the attacker\u0027s control; with CONFIG_PROC_FS=y the `proc_mkdir(\"fs/netfs\")` failure path is not taken.\nPR:L - An unprivileged local user with read access to any file on a netfs-backed mount triggers `netfs_alloc_request()`; no capability, CAP_SYS_ADMIN, or namespace privilege is checked anywhere along the read path.\nUI:N - On a system with an already-mounted or automounted netfs filesystem (including NFS/9p root), the attacker simply reads a file; no action by another user or administrator is needed.\nS:U - The dangling mempool/slab pointers and the resulting corruption are confined to the kernel\u0027s own memory and security authority, with no crossing into a hypervisor, IOMMU, or other security scope.\nC:H - `netfs_alloc_request()` dereferences the destroyed `kmem_cache` via `mempool-\u003epool_data` and `kmem_cache_size(cache)`, a use-after-free read of a freed slab descriptor whose contents an attacker can influence through heap grooming, and the resulting mis-sized allocation/memset can expose adjacent kernel heap data.\nI:H - `kmem_cache_alloc()` is performed on a freed cache descriptor and the object is then zeroed for `kmem_cache_size(cache)` bytes read from that freed memory, giving a controllable-length zero-write past the allocation \u2014 a heap corruption primitive usable for control-flow hijacking.\nA:H - The documented and immediate result is a kernel BUG/oops in `mempool_alloc_slab` (`kernel BUG at mm/mempool.c`), which in the reported case killed PID 1 during `bprm_execve` and panics the system; every subsequent netfs request repeats the fault."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:57:59.281Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2ef6eea2efce01d1956ace483216f6b6e26330c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c4c5e0b96a90f2a11c378e66edc1f25165e10b6"
        },
        {
          "url": "https://git.kernel.org/stable/c/40cb48eba3b4b79e110c1a35d33a48cac54507a2"
        }
      ],
      "title": "netfs: Only create /proc/fs/netfs with CONFIG_PROC_FS",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37876",
    "datePublished": "2025-05-09T06:45:40.934Z",
    "dateReserved": "2025-04-16T04:51:23.960Z",
    "dateUpdated": "2026-08-05T11:57:59.281Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-37876",
      "date": "2026-09-16",
      "epss": "0.00251",
      "percentile": "0.16651"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37876\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-09T07:16:08.790\",\"lastModified\":\"2026-07-30T06:22:26.803\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfs: Only create /proc/fs/netfs with CONFIG_PROC_FS\\n\\nWhen testing a special config:\\n\\nCONFIG_NETFS_SUPPORTS=y\\nCONFIG_PROC_FS=n\\n\\nThe system crashes with something like:\\n\\n[    3.766197] ------------[ cut here ]------------\\n[    3.766484] kernel BUG at mm/mempool.c:560!\\n[    3.766789] Oops: invalid opcode: 0000 [#1] SMP NOPTI\\n[    3.767123] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G        W\\n[    3.767777] Tainted: [W]=WARN\\n[    3.767968] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),\\n[    3.768523] RIP: 0010:mempool_alloc_slab.cold+0x17/0x19\\n[    3.768847] Code: 50 fe ff 58 5b 5d 41 5c 41 5d 41 5e 41 5f e9 93 95 13 00\\n[    3.769977] RSP: 0018:ffffc90000013998 EFLAGS: 00010286\\n[    3.770315] RAX: 000000000000002f RBX: ffff888100ba8640 RCX: 0000000000000000\\n[    3.770749] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 00000000ffffffff\\n[    3.771217] RBP: 0000000000092880 R08: 0000000000000000 R09: ffffc90000013828\\n[    3.771664] R10: 0000000000000001 R11: 00000000ffffffea R12: 0000000000092cc0\\n[    3.772117] R13: 0000000000000400 R14: ffff8881004b1620 R15: ffffea0004ef7e40\\n[    3.772554] FS:  0000000000000000(0000) GS:ffff8881b5f3c000(0000) knlGS:0000000000000000\\n[    3.773061] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[    3.773443] CR2: ffffffff830901b4 CR3: 0000000004296001 CR4: 0000000000770ef0\\n[    3.773884] PKRU: 55555554\\n[    3.774058] Call Trace:\\n[    3.774232]  \u003cTASK\u003e\\n[    3.774371]  mempool_alloc_noprof+0x6a/0x190\\n[    3.774649]  ? _printk+0x57/0x80\\n[    3.774862]  netfs_alloc_request+0x85/0x2ce\\n[    3.775147]  netfs_readahead+0x28/0x170\\n[    3.775395]  read_pages+0x6c/0x350\\n[    3.775623]  ? srso_alias_return_thunk+0x5/0xfbef5\\n[    3.775928]  page_cache_ra_unbounded+0x1bd/0x2a0\\n[    3.776247]  filemap_get_pages+0x139/0x970\\n[    3.776510]  ? srso_alias_return_thunk+0x5/0xfbef5\\n[    3.776820]  filemap_read+0xf9/0x580\\n[    3.777054]  ? srso_alias_return_thunk+0x5/0xfbef5\\n[    3.777368]  ? srso_alias_return_thunk+0x5/0xfbef5\\n[    3.777674]  ? find_held_lock+0x32/0x90\\n[    3.777929]  ? netfs_start_io_read+0x19/0x70\\n[    3.778221]  ? netfs_start_io_read+0x19/0x70\\n[    3.778489]  ? srso_alias_return_thunk+0x5/0xfbef5\\n[    3.778800]  ? lock_acquired+0x1e6/0x450\\n[    3.779054]  ? srso_alias_return_thunk+0x5/0xfbef5\\n[    3.779379]  netfs_buffered_read_iter+0x57/0x80\\n[    3.779670]  __kernel_read+0x158/0x2c0\\n[    3.779927]  bprm_execve+0x300/0x7a0\\n[    3.780185]  kernel_execve+0x10c/0x140\\n[    3.780423]  ? __pfx_kernel_init+0x10/0x10\\n[    3.780690]  kernel_init+0xd5/0x150\\n[    3.780910]  ret_from_fork+0x2d/0x50\\n[    3.781156]  ? __pfx_kernel_init+0x10/0x10\\n[    3.781414]  ret_from_fork_asm+0x1a/0x30\\n[    3.781677]  \u003c/TASK\u003e\\n[    3.781823] Modules linked in:\\n[    3.782065] ---[ end trace 0000000000000000 ]---\\n\\nThis is caused by the following error path in netfs_init():\\n\\n        if (!proc_mkdir(\\\"fs/netfs\\\", NULL))\\n                goto error_proc;\\n\\nFix this by adding ifdef in netfs_main(), so that /proc/fs/netfs is only\\ncreated with CONFIG_PROC_FS.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfs: Solo crea /proc/fs/netfs con CONFIG_PROC_FS Al probar una configuraci\u00f3n especial: CONFIG_NETFS_SUPPORTS=y CONFIG_PROC_FS=n El sistema se bloquea con algo como: [ 3.766197] ------------[ corte aqu\u00ed ]------------ [ 3.766484] \u00a1ERROR del kernel en mm/mempool.c:560! [ 3.766789] Oops: c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] SMP NOPTI [ 3.767123] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Contaminado: GW [ 3.767777] Contaminado: [W]=WARN [ 3.767968] Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), [ 3.768523] RIP: 0010:mempool_alloc_slab.cold+0x17/0x19 [ 3.768847] C\u00f3digo: 50 fe ff 58 5b 5d 41 5c 41 5d 41 5e 41 5f e9 93 95 13 00 [ 3.769977] RSP: 0018:ffffc90000013998 EFLAGS: 00010286 [3.770315] RAX: 000000000000002f RBX: ffff888100ba8640 RCX: 0000000000000000 [3.770749] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 000000000ffffffff [3.771217] RBP: 0000000000092880 R08: 000000000000000 R09: ffffc90000013828 [3.771664] R10: 0000000000000001 R11: 00000000ffffffea R12: 0000000000092cc0 [3.772117] R13: 0000000000000400 R14: ffff8881004b1620 R15: ffffea0004ef7e40 [3.772554] FS: 0000000000000000(0000) GS:ffff8881b5f3c000(0000) knlGS:0000000000000000 [3.773061] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.773443] CR2: ffffffff830901b4 CR3: 0000000004296001 CR4: 0000000000770ef0 [ 3.773884] PKRU: 55555554 [ 3.774058] Seguimiento de llamadas: [ 3.774232]  [ 3.774371] mempool_alloc_noprof+0x6a/0x190 [ 3.774649] ? _printk+0x57/0x80 [ 3.774862] netfs_alloc_request+0x85/0x2ce [ 3.775147] netfs_readahead+0x28/0x170 [ 3.775395] read_pages+0x6c/0x350 [ 3.775623] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.775928] page_cache_ra_unbounded+0x1bd/0x2a0 [ 3.776247] filemap_get_pages+0x139/0x970 [ 3.776510] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.776820] filemap_read+0xf9/0x580 [ 3.777054] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.777368] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.777674] ? find_held_lock+0x32/0x90 [ 3.777929] ? netfs_start_io_read+0x19/0x70 [ 3.778221] ? netfs_start_io_read+0x19/0x70 [ 3.778489] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.778800] ? lock_acquired+0x1e6/0x450 [ 3.779054] ? srso_alias_return_thunk+0x5/0xfbef5 [ 3.779379] netfs_buffered_read_iter+0x57/0x80 [ 3.779670] __kernel_read+0x158/0x2c0 [ 3.779927] bprm_execve+0x300/0x7a0 [ 3.780185] kernel_execve+0x10c/0x140 [ 3.780423] ? __pfx_kernel_init+0x10/0x10 [ 3.780690] kernel_init+0xd5/0x150 [ 3.780910] ret_from_fork+0x2d/0x50 [ 3.781156] ? __pfx_kernel_init+0x10/0x10 [ 3.781414] ret_from_fork_asm+0x1a/0x30 [ 3.781677]  [ 3.781823] Modules linked in: [ 3.782065] ---[ fin de seguimiento 0000000000000000 ]--- Esto se debe a la siguiente ruta de error en netfs_init(): if (!proc_mkdir(\\\"fs/netfs\\\", NULL)) goto error_proc; Solucione esto agregando ifdef en netfs_main(), de modo que /proc/fs/netfs solo se cree con CONFIG_PROC_FS.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/netfs/main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab\",\"lessThan\":\"2ef6eea2efce01d1956ace483216f6b6e26330c9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab\",\"lessThan\":\"6c4c5e0b96a90f2a11c378e66edc1f25165e10b6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7eb5b3e3a0a55f2d166ca949ef47ca6e0c704aab\",\"lessThan\":\"40cb48eba3b4b79e110c1a35d33a48cac54507a2\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/netfs/main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.26\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14.5\",\"lessThanOrEqual\":\"6.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.12.26\",\"matchCriteriaId\":\"ADF8DED6-5191-4112-A6A1-96DB750D05C0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.14.5\",\"matchCriteriaId\":\"6B25CA7E-4CD0-46DB-B4EF-13A3516071FB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8D465631-2980-487A-8E65-40AE2B9F8ED1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4C9D071F-B28E-46EC-AC61-22B913390211\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2ef6eea2efce01d1956ace483216f6b6e26330c9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/40cb48eba3b4b79e110c1a35d33a48cac54507a2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6c4c5e0b96a90f2a11c378e66edc1f25165e10b6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-30T09:32:33+00:00",
      "cve": "CVE-2025-37876",
      "id": "CVE-2025-37876",
      "initial_release_date": "2025-05-09T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfs: Only create /proc/fs/netfs with CONFIG_PROC_FS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-37876.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-28T17:04:05Z",
      "cve": "CVE-2025-37876",
      "id": "CVE-2025-37876",
      "initial_release_date": "2025-05-10T02:52:29Z",
      "product_status:known_not_affected": "563",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-37876",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-37876.json",
      "version": "11"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.