GHSA-RCJW-FC9M-VQQH

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-12-17 18:31
VLAI
Details

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

nvmet-tcp: don't restore null sk_state_change

queue->state_change is set as part of nvmet_tcp_set_queue_sock(), but if the TCP connection isn't established when nvmet_tcp_set_queue_sock() is called then queue->state_change isn't set and sock->sk->sk_state_change isn't replaced.

As such we don't need to restore sock->sk->sk_state_change if queue->state_change is NULL.

This avoids NULL pointer dereferences such as this:

[ 286.462026][ C0] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 286.462814][ C0] #PF: supervisor instruction fetch in kernel mode [ 286.463796][ C0] #PF: error_code(0x0010) - not-present page [ 286.464392][ C0] PGD 8000000140620067 P4D 8000000140620067 PUD 114201067 PMD 0 [ 286.465086][ C0] Oops: Oops: 0010 [#1] SMP KASAN PTI [ 286.465559][ C0] CPU: 0 UID: 0 PID: 1628 Comm: nvme Not tainted 6.15.0-rc2+ #11 PREEMPT(voluntary) [ 286.466393][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014 [ 286.467147][ C0] RIP: 0010:0x0 [ 286.467420][ C0] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 286.467977][ C0] RSP: 0018:ffff8883ae008580 EFLAGS: 00010246 [ 286.468425][ C0] RAX: 0000000000000000 RBX: ffff88813fd34100 RCX: ffffffffa386cc43 [ 286.469019][ C0] RDX: 1ffff11027fa68b6 RSI: 0000000000000008 RDI: ffff88813fd34100 [ 286.469545][ C0] RBP: ffff88813fd34160 R08: 0000000000000000 R09: ffffed1027fa682c [ 286.470072][ C0] R10: ffff88813fd34167 R11: 0000000000000000 R12: ffff88813fd344c3 [ 286.470585][ C0] R13: ffff88813fd34112 R14: ffff88813fd34aec R15: ffff888132cdd268 [ 286.471070][ C0] FS: 00007fe3c04c7d80(0000) GS:ffff88840743f000(0000) knlGS:0000000000000000 [ 286.471644][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.472543][ C0] CR2: ffffffffffffffd6 CR3: 000000012daca000 CR4: 00000000000006f0 [ 286.473500][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 286.474467][ C0] DR3: 0000000000000000 DR6: 00000000ffff07f0 DR7: 0000000000000400 [ 286.475453][ C0] Call Trace: [ 286.476102][ C0] [ 286.476719][ C0] tcp_fin+0x2bb/0x440 [ 286.477429][ C0] tcp_data_queue+0x190f/0x4e60 [ 286.478174][ C0] ? __build_skb_around+0x234/0x330 [ 286.478940][ C0] ? rcu_is_watching+0x11/0xb0 [ 286.479659][ C0] ? __pfx_tcp_data_queue+0x10/0x10 [ 286.480431][ C0] ? tcp_try_undo_loss+0x640/0x6c0 [ 286.481196][ C0] ? seqcount_lockdep_reader_access.constprop.0+0x82/0x90 [ 286.482046][ C0] ? kvm_clock_get_cycles+0x14/0x30 [ 286.482769][ C0] ? ktime_get+0x66/0x150 [ 286.483433][ C0] ? rcu_is_watching+0x11/0xb0 [ 286.484146][ C0] tcp_rcv_established+0x6e4/0x2050 [ 286.484857][ C0] ? rcu_is_watching+0x11/0xb0 [ 286.485523][ C0] ? ipv4_dst_check+0x160/0x2b0 [ 286.486203][ C0] ? __pfx_tcp_rcv_established+0x10/0x10 [ 286.486917][ C0] ? lock_release+0x217/0x2c0 [ 286.487595][ C0] tcp_v4_do_rcv+0x4d6/0x9b0 [ 286.488279][ C0] tcp_v4_rcv+0x2af8/0x3e30 [ 286.488904][ C0] ? raw_local_deliver+0x51b/0xad0 [ 286.489551][ C0] ? rcu_is_watching+0x11/0xb0 [ 286.490198][ C0] ? __pfx_tcp_v4_rcv+0x10/0x10 [ 286.490813][ C0] ? __pfx_raw_local_deliver+0x10/0x10 [ 286.491487][ C0] ? __pfx_nf_confirm+0x10/0x10 [nf_conntrack] [ 286.492275][ C0] ? rcu_is_watching+0x11/0xb0 [ 286.492900][ C0] ip_protocol_deliver_rcu+0x8f/0x370 [ 286.493579][ C0] ip_local_deliver_finish+0x297/0x420 [ 286.494268][ C0] ip_local_deliver+0x168/0x430 [ 286.494867][ C0] ? __pfx_ip_local_deliver+0x10/0x10 [ 286.495498][ C0] ? __pfx_ip_local_deliver_finish+0x10/0x10 [ 286.496204][ C0] ? ip_rcv_finish_core+0x19a/0x1f20 [ 286.496806][ C0] ? lock_release+0x217/0x2c0 [ 286.497414][ C0] ip_rcv+0x455/0x6e0 [ 286.497945][ C0] ? __pfx_ip_rcv+0x10/0x10 [ ---truncated---

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2025-38035"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T10:15:35Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: don\u0027t restore null sk_state_change\n\nqueue-\u003estate_change is set as part of nvmet_tcp_set_queue_sock(), but if\nthe TCP connection isn\u0027t established when nvmet_tcp_set_queue_sock() is\ncalled then queue-\u003estate_change isn\u0027t set and sock-\u003esk-\u003esk_state_change\nisn\u0027t replaced.\n\nAs such we don\u0027t need to restore sock-\u003esk-\u003esk_state_change if\nqueue-\u003estate_change is NULL.\n\nThis avoids NULL pointer dereferences such as this:\n\n[  286.462026][    C0] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[  286.462814][    C0] #PF: supervisor instruction fetch in kernel mode\n[  286.463796][    C0] #PF: error_code(0x0010) - not-present page\n[  286.464392][    C0] PGD 8000000140620067 P4D 8000000140620067 PUD 114201067 PMD 0\n[  286.465086][    C0] Oops: Oops: 0010 [#1] SMP KASAN PTI\n[  286.465559][    C0] CPU: 0 UID: 0 PID: 1628 Comm: nvme Not tainted 6.15.0-rc2+ #11 PREEMPT(voluntary)\n[  286.466393][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014\n[  286.467147][    C0] RIP: 0010:0x0\n[  286.467420][    C0] Code: Unable to access opcode bytes at 0xffffffffffffffd6.\n[  286.467977][    C0] RSP: 0018:ffff8883ae008580 EFLAGS: 00010246\n[  286.468425][    C0] RAX: 0000000000000000 RBX: ffff88813fd34100 RCX: ffffffffa386cc43\n[  286.469019][    C0] RDX: 1ffff11027fa68b6 RSI: 0000000000000008 RDI: ffff88813fd34100\n[  286.469545][    C0] RBP: ffff88813fd34160 R08: 0000000000000000 R09: ffffed1027fa682c\n[  286.470072][    C0] R10: ffff88813fd34167 R11: 0000000000000000 R12: ffff88813fd344c3\n[  286.470585][    C0] R13: ffff88813fd34112 R14: ffff88813fd34aec R15: ffff888132cdd268\n[  286.471070][    C0] FS:  00007fe3c04c7d80(0000) GS:ffff88840743f000(0000) knlGS:0000000000000000\n[  286.471644][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  286.472543][    C0] CR2: ffffffffffffffd6 CR3: 000000012daca000 CR4: 00000000000006f0\n[  286.473500][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  286.474467][    C0] DR3: 0000000000000000 DR6: 00000000ffff07f0 DR7: 0000000000000400\n[  286.475453][    C0] Call Trace:\n[  286.476102][    C0]  \u003cIRQ\u003e\n[  286.476719][    C0]  tcp_fin+0x2bb/0x440\n[  286.477429][    C0]  tcp_data_queue+0x190f/0x4e60\n[  286.478174][    C0]  ? __build_skb_around+0x234/0x330\n[  286.478940][    C0]  ? rcu_is_watching+0x11/0xb0\n[  286.479659][    C0]  ? __pfx_tcp_data_queue+0x10/0x10\n[  286.480431][    C0]  ? tcp_try_undo_loss+0x640/0x6c0\n[  286.481196][    C0]  ? seqcount_lockdep_reader_access.constprop.0+0x82/0x90\n[  286.482046][    C0]  ? kvm_clock_get_cycles+0x14/0x30\n[  286.482769][    C0]  ? ktime_get+0x66/0x150\n[  286.483433][    C0]  ? rcu_is_watching+0x11/0xb0\n[  286.484146][    C0]  tcp_rcv_established+0x6e4/0x2050\n[  286.484857][    C0]  ? rcu_is_watching+0x11/0xb0\n[  286.485523][    C0]  ? ipv4_dst_check+0x160/0x2b0\n[  286.486203][    C0]  ? __pfx_tcp_rcv_established+0x10/0x10\n[  286.486917][    C0]  ? lock_release+0x217/0x2c0\n[  286.487595][    C0]  tcp_v4_do_rcv+0x4d6/0x9b0\n[  286.488279][    C0]  tcp_v4_rcv+0x2af8/0x3e30\n[  286.488904][    C0]  ? raw_local_deliver+0x51b/0xad0\n[  286.489551][    C0]  ? rcu_is_watching+0x11/0xb0\n[  286.490198][    C0]  ? __pfx_tcp_v4_rcv+0x10/0x10\n[  286.490813][    C0]  ? __pfx_raw_local_deliver+0x10/0x10\n[  286.491487][    C0]  ? __pfx_nf_confirm+0x10/0x10 [nf_conntrack]\n[  286.492275][    C0]  ? rcu_is_watching+0x11/0xb0\n[  286.492900][    C0]  ip_protocol_deliver_rcu+0x8f/0x370\n[  286.493579][    C0]  ip_local_deliver_finish+0x297/0x420\n[  286.494268][    C0]  ip_local_deliver+0x168/0x430\n[  286.494867][    C0]  ? __pfx_ip_local_deliver+0x10/0x10\n[  286.495498][    C0]  ? __pfx_ip_local_deliver_finish+0x10/0x10\n[  286.496204][    C0]  ? ip_rcv_finish_core+0x19a/0x1f20\n[  286.496806][    C0]  ? lock_release+0x217/0x2c0\n[  286.497414][    C0]  ip_rcv+0x455/0x6e0\n[  286.497945][    C0]  ? __pfx_ip_rcv+0x10/0x10\n[ \n---truncated---",
  "id": "GHSA-rcjw-fc9m-vqqh",
  "modified": "2025-12-17T18:31:31Z",
  "published": "2025-06-18T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38035"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17e58be5b49f58bf17799a504f55c2d05ab2ecdc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a982ada411b8c52695f1784c3f4784771f30209"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46d22b47df2741996af277a2838b95f130436c13"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6265538446e2426f4bf3b57e91d7680b2047ddd9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a21cb31642ffc84ca4ce55028212a96f72f54d30"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c240375587ddcc80e1022f52ee32b946bbc3a639"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec462449f4cf616b0aa2ed119f5f44b5fdfcefab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc01b547c3f8bfa6e1d23cd5a2c63c736e8c3e4e"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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