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Уязвимости linux-kvm · Страница 166

За последние 30 дней в linux-kvm опубликовано уязвимостей: 323; в каталоге KEV: 0.

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  1. CVE-2025-39848

    Высокий · CVSS 8.8EPSS 0,24%Нет опубликованного исправления

    ax25: properly unshare skbs in ax25_kiss_rcv()

    In the Linux kernel, the following vulnerability has been resolved: ax25: properly unshare skbs in ax25_kiss_rcv() Bernard Pidoux reported a regression apparently caused by commit c353e8983e0d ("net: introduce per netns packet chains"). skb->dev becomes NULL and we crash in __netif_receive_skb_core(). Before above commit, different kind of bugs or corruptions could happen without a major crash. But the root cause is that ax25_kiss_rcv() can queue/mangle input skb without checking if this skb is shared or not. Many thanks to Bernard Pidoux for his help, diagnosis and tests. We had a similar issue years ago fixed with commit 7aaed57c5c28

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  2. CVE-2025-39847

    Средний · CVSS 5.5EPSS 0,16%Нет опубликованного исправления

    ppp: fix memory leak in pad_compress_skb

    In the Linux kernel, the following vulnerability has been resolved: ppp: fix memory leak in pad_compress_skb If alloc_skb() fails in pad_compress_skb(), it returns NULL without releasing the old skb. The caller does: skb = pad_compress_skb(ppp, skb); if (!skb) goto drop; drop: kfree_skb(skb); When pad_compress_skb() returns NULL, the reference to the old skb is lost and kfree_skb(skb) ends up doing nothing, leading to a memory leak. Align pad_compress_skb() semantics with realloc(): only free the old skb if allocation and compression succeed. At the call site, use the new_skb variable so the original skb is not lost

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  3. CVE-2025-39846

    Средний · CVSS 5.5EPSS 0,16%Нет опубликованного исправления

    pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()

    In the Linux kernel, the following vulnerability has been resolved: pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region() In __iodyn_find_io_region(), pcmcia_make_resource() is assigned to res and used in pci_bus_alloc_resource(). There is a dereference of res in pci_bus_alloc_resource(), which could lead to a NULL pointer dereference on failure of pcmcia_make_resource(). Fix this bug by adding a check of res.

    linux-kvmОперационные системы
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  4. CVE-2025-39839

    Высокий · CVSS 8.8EPSS 0,26%Нет опубликованного исправления

    batman-adv: fix OOB read/write in network-coding decode

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix OOB read/write in network-coding decode batadv_nc_skb_decode_packet() trusts coded_len and checks only against skb->len. XOR starts at sizeof(struct batadv_unicast_packet), reducing payload headroom, and the source skb length is not verified, allowing an out-of-bounds read and a small out-of-bounds write. Validate that coded_len fits within the payload area of both destination and source sk_buffs before XORing.

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  5. CVE-2023-53447

    Средний · CVSS 4.7EPSS 0,11%Нет опубликованного исправления

    f2fs: don't reset unchangable mount option in f2fs_remount()

    In the Linux kernel, the following vulnerability has been resolved: f2fs: don't reset unchangable mount option in f2fs_remount() syzbot reports a bug as below: general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN RIP: 0010:__lock_acquire+0x69/0x2000 kernel/locking/lockdep.c:4942 Call Trace: lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5691 __raw_write_lock include/linux/rwlock_api_smp.h:209 [inline] _raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300 __drop_extent_tree+0x3ac/0x660 fs/f2fs/extent_cache.c:1100 f2fs_drop_extent_tree+0x17/0x30 fs/f2fs/extent_cache.c:1116 f2

    linux-kvmОперационные системы
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  6. CVE-2023-53446

    Высокий · CVSS 7.8EPSS 0,15%Нет опубликованного исправления

    PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free

    In the Linux kernel, the following vulnerability has been resolved: PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free Struct pcie_link_state->downstream is a pointer to the pci_dev of function 0. Previously we retained that pointer when removing function 0, and subsequent ASPM policy changes dereferenced it, resulting in a use-after-free warning from KASAN, e.g.: # echo 1 > /sys/bus/pci/devices/0000:03:00.0/remove # echo powersave > /sys/module/pcie_aspm/parameters/policy BUG: KASAN: slab-use-after-free in pcie_config_aspm_link+0x42d/0x500 Call Trace: kasan_report+0xae/0xe0 pcie_config_aspm_link+0x42d/0

    linux-kvmОперационные системы
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  7. CVE-2023-53443

    Средний · CVSS 5.5EPSS 0,15%Нет опубликованного исправления

    mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak

    In the Linux kernel, the following vulnerability has been resolved: mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak In arizona_clk32k_enable(), we should use pm_runtime_resume_and_get() as pm_runtime_get_sync() will increase the refcnt even when it returns an error.

    linux-kvmОперационные системы
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  8. CVE-2023-53441

    Средний · CVSS 5.5EPSS 0,15%Нет опубликованного исправления

    bpf: cpumap: Fix memory leak in cpu_map_update_elem

    In the Linux kernel, the following vulnerability has been resolved: bpf: cpumap: Fix memory leak in cpu_map_update_elem Syzkaller reported a memory leak as follows: BUG: memory leak unreferenced object 0xff110001198ef748 (size 192): comm "syz-executor.3", pid 17672, jiffies 4298118891 (age 9.906s) hex dump (first 32 bytes): 00 00 00 00 4a 19 00 00 80 ad e3 e4 fe ff c0 00 ....J........... 00 b2 d3 0c 01 00 11 ff 28 f5 8e 19 01 00 11 ff ........(....... backtrace: [<ffffffffadd28087>] __cpu_map_entry_alloc+0xf7/0xb00 [<ffffffffadd28d8e>] cpu_map_update_elem+0x2fe/0x3d0 [<ffffffffadc6d0fd>] bpf_map_update_value.isr

    linux-kvmОперационные системы
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  9. CVE-2023-53440

    Высокий · CVSS 7.8EPSS 0,15%Нет опубликованного исправления

    nilfs2: fix sysfs interface lifetime

    In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix sysfs interface lifetime The current nilfs2 sysfs support has issues with the timing of creation and deletion of sysfs entries, potentially leading to null pointer dereferences, use-after-free, and lockdep warnings. Some of the sysfs attributes for nilfs2 per-filesystem instance refer to metadata file "cpfile", "sufile", or "dat", but nilfs_sysfs_create_device_group that creates those attributes is executed before the inodes for these metadata files are loaded, and nilfs_sysfs_delete_device_group which deletes these sysfs entries is called after releasing their

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  10. CVE-2023-53438

    Средний · CVSS 5.5EPSS 0,15%Нет опубликованного исправления

    x86/MCE: Always save CS register on AMD Zen IF Poison errors

    In the Linux kernel, the following vulnerability has been resolved: x86/MCE: Always save CS register on AMD Zen IF Poison errors The Instruction Fetch (IF) units on current AMD Zen-based systems do not guarantee a synchronous #MC is delivered for poison consumption errors. Therefore, MCG_STATUS[EIPV|RIPV] will not be set. However, the microarchitecture does guarantee that the exception is delivered within the same context. In other words, the exact rIP is not known, but the context is known to not have changed. There is no architecturally-defined method to determine this behavior. The Code Segment (CS) register is always valid on such IF

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  11. CVE-2023-53437

    Средний · CVSS 5.5EPSS 0,15%Нет опубликованного исправления

    media: uvcvideo: Handle cameras with invalid descriptors

    In the Linux kernel, the following vulnerability has been resolved: media: uvcvideo: Handle cameras with invalid descriptors If the source entity does not contain any pads, do not create a link.

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  12. CVE-2023-53436

    Средний · CVSS 5.5EPSS 0,15%Нет опубликованного исправления

    scsi: snic: Fix possible memory leak if device_add() fails

    In the Linux kernel, the following vulnerability has been resolved: scsi: snic: Fix possible memory leak if device_add() fails If device_add() returns error, the name allocated by dev_set_name() needs be freed. As the comment of device_add() says, put_device() should be used to give up the reference in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanp().

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  13. CVE-2023-53435

    Средний · CVSS 5.5EPSS 0,15%Нет опубликованного исправления

    cassini: Fix a memory leak in the error handling path of cas_init_one()

    In the Linux kernel, the following vulnerability has been resolved: cassini: Fix a memory leak in the error handling path of cas_init_one() cas_saturn_firmware_init() allocates some memory using vmalloc(). This memory is freed in the .remove() function but not it the error handling path of the probe. Add the missing vfree() to avoid a memory leak, should an error occur.

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  14. CVE-2023-53433

    Средний · CVSS 5.5EPSS 0,15%Нет опубликованного исправления

    net: add vlan_get_protocol_and_depth() helper

    In the Linux kernel, the following vulnerability has been resolved: net: add vlan_get_protocol_and_depth() helper Before blamed commit, pskb_may_pull() was used instead of skb_header_pointer() in __vlan_get_protocol() and friends. Few callers depended on skb->head being populated with MAC header, syzbot caught one of them (skb_mac_gso_segment()) Add vlan_get_protocol_and_depth() to make the intent clearer and use it where sensible. This is a more generic fix than commit e9d3f80935b6 ("net/af_packet: make sure to pull mac header") which was dealing with a similar issue. kernel BUG at include/linux/skbuff.h:2655 ! invalid opcode: 0000 [#1

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  15. CVE-2023-53432

    Высокий · CVSS 8.8EPSS 0,21%Нет опубликованного исправления

    firewire: net: fix use after free in fwnet_finish_incoming_packet()

    In the Linux kernel, the following vulnerability has been resolved: firewire: net: fix use after free in fwnet_finish_incoming_packet() The netif_rx() function frees the skb so we can't dereference it to save the skb->len.

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  16. CVE-2023-53431

    Высокий · CVSS 8.8EPSS 0,22%Нет опубликованного исправления

    scsi: ses: Handle enclosure with just a primary component gracefully

    In the Linux kernel, the following vulnerability has been resolved: scsi: ses: Handle enclosure with just a primary component gracefully This reverts commit 3fe97ff3d949 ("scsi: ses: Don't attach if enclosure has no components") and introduces proper handling of case where there are no detected secondary components, but primary component (enumerated in num_enclosures) does exist. That fix was originally proposed by Ding Hui <dinghui@sangfor.com.cn>. Completely ignoring devices that have one primary enclosure and no secondary one results in ses_intf_add() bailing completely scsi 2:0:0:254: enclosure has no enumerated components sc

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  17. CVE-2023-53429

    Высокий · CVSS 7.8EPSS 0,15%Нет опубликованного исправления

    btrfs: don't check PageError in __extent_writepage

    In the Linux kernel, the following vulnerability has been resolved: btrfs: don't check PageError in __extent_writepage __extent_writepage currenly sets PageError whenever any error happens, and the also checks for PageError to decide if to call error handling. This leads to very unclear responsibility for cleaning up on errors. In the VM and generic writeback helpers the basic idea is that once I/O is fired off all error handling responsibility is delegated to the end I/O handler. But if that end I/O handler sets the PageError bit, and the submitter checks it, the bit could in some cases leak into the submission context for fast enough I/O

    linux-kvmОперационные системы
    Опубликовано Обновлено
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  18. CVE-2023-53425

    Средний · CVSS 5.5EPSS 0,15%Нет опубликованного исправления

    media: platform: mediatek: vpu: fix NULL ptr dereference

    In the Linux kernel, the following vulnerability has been resolved: media: platform: mediatek: vpu: fix NULL ptr dereference If pdev is NULL, then it is still dereferenced. This fixes this smatch warning: drivers/media/platform/mediatek/vpu/mtk_vpu.c:570 vpu_load_firmware() warn: address of NULL pointer 'pdev'

    linux-kvmОперационные системы
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  19. CVE-2022-50412

    Высокий · CVSS 7.8EPSS 0,18%Нет опубликованного исправления

    drm: bridge: adv7511: unregister cec i2c device after cec adapter

    In the Linux kernel, the following vulnerability has been resolved: drm: bridge: adv7511: unregister cec i2c device after cec adapter cec_unregister_adapter() assumes that the underlying adapter ops are callable. For example, if the CEC adapter currently has a valid physical address, then the unregistration procedure will invalidate the physical address by setting it to f.f.f.f. Whence the following kernel oops observed after removing the adv7511 module: Unable to handle kernel execution of user memory at virtual address 0000000000000000 Internal error: Oops: 86000004 [#1] PREEMPT_RT SMP Call trace: 0x0 adv7511_cec_ad

    linux-kvmОперационные системы
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  20. CVE-2022-50410

    Критический · CVSS 9.8EPSS 0,43%Нет опубликованного исправления

    NFSD: Protect against send buffer overflow in NFSv2 READ

    In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv2 READ Since before the git era, NFSD has conserved the number of pages held by each nfsd thread by combining the RPC receive and send buffers into a single array of pages. This works because there are no cases where an operation needs a large RPC Call message and a large RPC Reply at the same time. Once an RPC Call has been received, svc_process() updates svc_rqst::rq_res to describe the part of rq_pages that can be used for constructing the Reply. This means that the send buffer (rq_res) shrinks when the received RPC reco

    linux-kvmОперационные системы
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