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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: bpf_sk_storage: Fix invalid wait context lockdep report\n\n\u0027./test_progs -t test_local_storage\u0027 reported a splat:\n\n[   27.137569] =============================\n[   27.138122] [ BUG: Invalid wait context ]\n[   27.138650] 6.5.0-03980-gd11ae1b16b0a #247 Tainted: G           O\n[   27.139542] -----------------------------\n[   27.140106] test_progs/1729 is trying to lock:\n[   27.140713] ffff8883ef047b88 (stock_lock){-.-.}-{3:3}, at: local_lock_acquire+0x9/0x130\n[   27.141834] other info that might help us debug this:\n[   27.142437] context-{5:5}\n[   27.142856] 2 locks held by test_progs/1729:\n[   27.143352]  #0: ffffffff84bcd9c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x40\n[   27.144492]  #1: ffff888107deb2c0 (\u0026storage-\u003elock){..-.}-{2:2}, at: bpf_local_storage_update+0x39e/0x8e0\n[   27.145855] stack backtrace:\n[   27.146274] CPU: 0 PID: 1729 Comm: test_progs Tainted: G           O       6.5.0-03980-gd11ae1b16b0a #247\n[   27.147550] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\n[   27.149127] Call Trace:\n[   27.149490]  \u003cTASK\u003e\n[   27.149867]  dump_stack_lvl+0x130/0x1d0\n[   27.152609]  dump_stack+0x14/0x20\n[   27.153131]  __lock_acquire+0x1657/0x2220\n[   27.153677]  lock_acquire+0x1b8/0x510\n[   27.157908]  local_lock_acquire+0x29/0x130\n[   27.159048]  obj_cgroup_charge+0xf4/0x3c0\n[   27.160794]  slab_pre_alloc_hook+0x28e/0x2b0\n[   27.161931]  __kmem_cache_alloc_node+0x51/0x210\n[   27.163557]  __kmalloc+0xaa/0x210\n[   27.164593]  bpf_map_kzalloc+0xbc/0x170\n[   27.165147]  bpf_selem_alloc+0x130/0x510\n[   27.166295]  bpf_local_storage_update+0x5aa/0x8e0\n[   27.167042]  bpf_fd_sk_storage_update_elem+0xdb/0x1a0\n[   27.169199]  bpf_map_update_value+0x415/0x4f0\n[   27.169871]  map_update_elem+0x413/0x550\n[   27.170330]  __sys_bpf+0x5e9/0x640\n[   27.174065]  __x64_sys_bpf+0x80/0x90\n[   27.174568]  do_syscall_64+0x48/0xa0\n[   27.175201]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n[   27.175932] RIP: 0033:0x7effb40e41ad\n[   27.176357] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 8b 0d8\n[   27.179028] RSP: 002b:00007ffe64c21fc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000141\n[   27.180088] RAX: ffffffffffffffda RBX: 00007ffe64c22768 RCX: 00007effb40e41ad\n[   27.181082] RDX: 0000000000000020 RSI: 00007ffe64c22008 RDI: 0000000000000002\n[   27.182030] RBP: 00007ffe64c21ff0 R08: 0000000000000000 R09: 00007ffe64c22788\n[   27.183038] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000000\n[   27.184006] R13: 00007ffe64c22788 R14: 00007effb42a1000 R15: 0000000000000000\n[   27.184958]  \u003c/TASK\u003e\n\nIt complains about acquiring a local_lock while holding a raw_spin_lock.\nIt means it should not allocate memory while holding a raw_spin_lock\nsince it is not safe for RT.\n\nraw_spin_lock is needed because bpf_local_storage supports tracing\ncontext. In particular for task local storage, it is easy to\nget a \"current\" task PTR_TO_BTF_ID in tracing bpf prog.\nHowever, task (and cgroup) local storage has already been moved to\nbpf mem allocator which can be used after raw_spin_lock.\n\nThe splat is for the sk storage. For sk (and inode) storage,\nit has not been moved to bpf mem allocator. Using raw_spin_lock or not,\nkzalloc(GFP_ATOMIC) could theoretically be unsafe in tracing context.\nHowever, the local storage helper requires a verifier accepted\nsk pointer (PTR_TO_BTF_ID), it is hypothetical if that (mean running\na bpf prog in a kzalloc unsafe context and also able to hold a verifier\naccepted sk pointer) could happen.\n\nThis patch avoids kzalloc after raw_spin_lock to silent the splat.\nThere is an existing kzalloc before the raw_spin_lock. At that point,\na kzalloc is very likely required because a lookup has just been done\nbefore. Thus, this patch always does the kzalloc before acq\n---truncated---"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Do not swap cpu_buffer during resize process\n\nWhen ring_buffer_swap_cpu was called during resize process,\nthe cpu buffer was swapped in the middle, resulting in incorrect state.\nContinuing to run in the wrong state will result in oops.\n\nThis issue can be easily reproduced using the following two scripts:\n/tmp # cat test1.sh\n//#! /bin/sh\nfor i in `seq 0 100000`\ndo\n         echo 2000 \u003e /sys/kernel/debug/tracing/buffer_size_kb\n         sleep 0.5\n         echo 5000 \u003e /sys/kernel/debug/tracing/buffer_size_kb\n         sleep 0.5\ndone\n/tmp # cat test2.sh\n//#! /bin/sh\nfor i in `seq 0 100000`\ndo\n        echo irqsoff \u003e /sys/kernel/debug/tracing/current_tracer\n        sleep 1\n        echo nop \u003e /sys/kernel/debug/tracing/current_tracer\n        sleep 1\ndone\n/tmp # ./test1.sh \u0026\n/tmp # ./test2.sh \u0026\n\nA typical oops log is as follows, sometimes with other different oops logs.\n\n[  231.711293] WARNING: CPU: 0 PID: 9 at kernel/trace/ring_buffer.c:2026 rb_update_pages+0x378/0x3f8\n[  231.713375] Modules linked in:\n[  231.714735] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G        W          6.5.0-rc1-00276-g20edcec23f92 #15\n[  231.716750] Hardware name: linux,dummy-virt (DT)\n[  231.718152] Workqueue: events update_pages_handler\n[  231.719714] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[  231.721171] pc : rb_update_pages+0x378/0x3f8\n[  231.722212] lr : rb_update_pages+0x25c/0x3f8\n[  231.723248] sp : ffff800082b9bd50\n[  231.724169] x29: ffff800082b9bd50 x28: ffff8000825f7000 x27: 0000000000000000\n[  231.726102] x26: 0000000000000001 x25: fffffffffffff010 x24: 0000000000000ff0\n[  231.728122] x23: ffff0000c3a0b600 x22: ffff0000c3a0b5c0 x21: fffffffffffffe0a\n[  231.730203] x20: ffff0000c3a0b600 x19: ffff0000c0102400 x18: 0000000000000000\n[  231.732329] x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffffe7aa8510\n[  231.734212] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000002\n[  231.736291] x11: ffff8000826998a8 x10: ffff800082b9baf0 x9 : ffff800081137558\n[  231.738195] x8 : fffffc00030e82c8 x7 : 0000000000000000 x6 : 0000000000000001\n[  231.740192] x5 : ffff0000ffbafe00 x4 : 0000000000000000 x3 : 0000000000000000\n[  231.742118] x2 : 00000000000006aa x1 : 0000000000000001 x0 : ffff0000c0007208\n[  231.744196] Call trace:\n[  231.744892]  rb_update_pages+0x378/0x3f8\n[  231.745893]  update_pages_handler+0x1c/0x38\n[  231.746893]  process_one_work+0x1f0/0x468\n[  231.747852]  worker_thread+0x54/0x410\n[  231.748737]  kthread+0x124/0x138\n[  231.749549]  ret_from_fork+0x10/0x20\n[  231.750434] ---[ end trace 0000000000000000 ]---\n[  233.720486] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n[  233.721696] Mem abort info:\n[  233.721935]   ESR = 0x0000000096000004\n[  233.722283]   EC = 0x25: DABT (current EL), IL = 32 bits\n[  233.722596]   SET = 0, FnV = 0\n[  233.722805]   EA = 0, S1PTW = 0\n[  233.723026]   FSC = 0x04: level 0 translation fault\n[  233.723458] Data abort info:\n[  233.723734]   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n[  233.724176]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[  233.724589]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[  233.725075] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000104943000\n[  233.725592] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n[  233.726231] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP\n[  233.726720] Modules linked in:\n[  233.727007] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G        W          6.5.0-rc1-00276-g20edcec23f92 #15\n[  233.727777] Hardware name: linux,dummy-virt (DT)\n[  233.728225] Workqueue: events update_pages_handler\n[  233.728655] pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[  233.729054] pc : rb_update_pages+0x1a8/0x3f8\n[  233.729334] lr : rb_update_pages+0x154/0x3f8\n[  233.729592] sp : ffff800082b9bd50\n[  233.729792] x29: ffff800082b9bd50 x28: ffff8000825f7000 x27: 00000000\n---truncated---"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix warning when putting transaction with qgroups enabled after abort\n\nIf we have a transaction abort with qgroups enabled we get a warning\ntriggered when doing the final put on the transaction, like this:\n\n  [552.6789] ------------[ cut here ]------------\n  [552.6815] WARNING: CPU: 4 PID: 81745 at fs/btrfs/transaction.c:144 btrfs_put_transaction+0x123/0x130 [btrfs]\n  [552.6817] Modules linked in: btrfs blake2b_generic xor (...)\n  [552.6819] CPU: 4 PID: 81745 Comm: btrfs-transacti Tainted: G        W          6.4.0-rc6-btrfs-next-134+ #1\n  [552.6819] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014\n  [552.6819] RIP: 0010:btrfs_put_transaction+0x123/0x130 [btrfs]\n  [552.6821] Code: bd a0 01 00 (...)\n  [552.6821] RSP: 0018:ffffa168c0527e28 EFLAGS: 00010286\n  [552.6821] RAX: ffff936042caed00 RBX: ffff93604a3eb448 RCX: 0000000000000000\n  [552.6821] RDX: ffff93606421b028 RSI: ffffffff92ff0878 RDI: ffff93606421b010\n  [552.6821] RBP: ffff93606421b000 R08: 0000000000000000 R09: ffffa168c0d07c20\n  [552.6821] R10: 0000000000000000 R11: ffff93608dc52950 R12: ffffa168c0527e70\n  [552.6821] R13: ffff93606421b000 R14: ffff93604a3eb420 R15: ffff93606421b028\n  [552.6821] FS:  0000000000000000(0000) GS:ffff93675fb00000(0000) knlGS:0000000000000000\n  [552.6821] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  [552.6821] CR2: 0000558ad262b000 CR3: 000000014feda005 CR4: 0000000000370ee0\n  [552.6822] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n  [552.6822] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n  [552.6822] Call Trace:\n  [552.6822]  \u003cTASK\u003e\n  [552.6822]  ? __warn+0x80/0x130\n  [552.6822]  ? btrfs_put_transaction+0x123/0x130 [btrfs]\n  [552.6824]  ? report_bug+0x1f4/0x200\n  [552.6824]  ? handle_bug+0x42/0x70\n  [552.6824]  ? exc_invalid_op+0x14/0x70\n  [552.6824]  ? asm_exc_invalid_op+0x16/0x20\n  [552.6824]  ? btrfs_put_transaction+0x123/0x130 [btrfs]\n  [552.6826]  btrfs_cleanup_transaction+0xe7/0x5e0 [btrfs]\n  [552.6828]  ? _raw_spin_unlock_irqrestore+0x23/0x40\n  [552.6828]  ? try_to_wake_up+0x94/0x5e0\n  [552.6828]  ? __pfx_process_timeout+0x10/0x10\n  [552.6828]  transaction_kthread+0x103/0x1d0 [btrfs]\n  [552.6830]  ? __pfx_transaction_kthread+0x10/0x10 [btrfs]\n  [552.6832]  kthread+0xee/0x120\n  [552.6832]  ? __pfx_kthread+0x10/0x10\n  [552.6832]  ret_from_fork+0x29/0x50\n  [552.6832]  \u003c/TASK\u003e\n  [552.6832] ---[ end trace 0000000000000000 ]---\n\nThis corresponds to this line of code:\n\n  void btrfs_put_transaction(struct btrfs_transaction *transaction)\n  {\n      (...)\n          WARN_ON(!RB_EMPTY_ROOT(\n                          \u0026transaction-\u003edelayed_refs.dirty_extent_root));\n      (...)\n  }\n\nThe warning happens because btrfs_qgroup_destroy_extent_records(), called\nin the transaction abort path, we free all entries from the rbtree\n\"dirty_extent_root\" with rbtree_postorder_for_each_entry_safe(), but we\ndon\u0027t actually empty the rbtree - it\u0027s still pointing to nodes that were\nfreed.\n\nSo set the rbtree\u0027s root node to NULL to avoid this warning (assign\nRB_ROOT)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-09T01:30:34.588Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ae91ab710d8e309f6c9eba07ce0d9d0b5d9040f0"
        },
        {
          "url": "https://git.kernel.org/stable/c/d2c667cc18314c9bad3ec86ae071c0342132aa09"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9060caab4135dd660c4676d1ea33a6e0d3fc09d"
        },
        {
          "url": "https://git.kernel.org/stable/c/89e994688e965813ec0a09fb30b87fb8cee06474"
        },
        {
          "url": "https://git.kernel.org/stable/c/62dd82bc7a90b5052c062a0ad5be6d8a479a3cfb"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa84ce8a78a1a5c10cdf9c7a5fb0c999fbc2c8d6"
        }
      ],
      "title": "btrfs: fix warning when putting transaction with qgroups enabled after abort",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53865",
    "datePublished": "2025-12-09T01:30:34.588Z",
    "dateReserved": "2025-12-09T01:27:17.829Z",
    "dateUpdated": "2025-12-09T01:30:34.588Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}