Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - 已解決 Linux 核心中的下列弱點：net: dsa: improve shutdown sequence Alexander Sverdlin presents 2 problems during shutdown with the lan9303 driver. One is specific to lan9303 and the other just happens to reproduce there. The first problem is that lan9303 is unique among DSA drivers in that it calls dev_get_drvdata() at arbitrary runtime (not probe, not shutdown, not remove):
    phy_state_machine() -> ... -> dsa_user_phy_read() -> ds->ops->phy_read() -> lan9303_phy_read() -> chip->ops->phy_read() -> lan9303_mdio_phy_read() -> dev_get_drvdata() But we never stop the phy_state_machine(), so it may continue to run after dsa_switch_shutdown(). Our common pattern in all DSA drivers is to set drvdata to NULL to suppress the remove() method that may come afterwards. But in this case it will result in an NPD. The second problem is that the way in which we set dp->conduit->dsa_ptr = NULL; is concurrent with receive packet processing. dsa_switch_rcv() checks once whether dev->dsa_ptr is NULL, but afterwards, rather than continuing to use that non-NULL value, dev->dsa_ptr is dereferenced again and again without NULL checks: dsa_conduit_find_user() and many other places. In between dereferences, there is no locking to ensure that what was valid once continues to be valid. Both problems have the common aspect that closing the conduit interface solves them. In the first case, dev_close(conduit) triggers the NETDEV_GOING_DOWN event in dsa_user_netdevice_event() which closes user ports as well. dsa_port_disable_rt() calls phylink_stop(), which synchronously stops the phylink state machine, and ds->ops->phy_read() will thus no longer call into the driver after this point. In the second case, dev_close(conduit) should do this, as per Documentation/networking/driver.rst: | Quiescence |
    ---------- | | After the ndo_stop routine has been called, the hardware must | not receive or transmit any data. All in flight packets must | be aborted. If necessary, poll or wait for completion of | any reset commands. So it should be sufficient to ensure that later, when we zeroize conduit->dsa_ptr, there will be no concurrent dsa_switch_rcv() call on this conduit. The addition of the netif_device_detach() function is to ensure that ioctls, rtnetlinks and ethtool requests on the user ports no longer propagate down to the driver - we're no longer prepared to handle them. The race condition actually did not exist when commit 0650bf52b31f (net: dsa: be compatible with masters which unregister on shutdown) first introduced dsa_switch_shutdown(). It was created later, when we stopped unregistering the user interfaces from a bad spot, and we just replaced that sequence with a racy zeroization of conduit->dsa_ptr (one which doesn't ensure that the interfaces aren't up). (CVE-2024-49998)

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Linux Distros 未修補的弱點：CVE-2024-49998

medium Nessus Plugin ID 231507

版本 1.18

版本 1.17

版本 1.16

版本 1.15

版本 1.13

版本 1.12

版本 1.11

版本 1.10

版本 1.9

版本 1.8

版本 1.7

版本 1.6

版本 1.1

版本 1.18 Jul 6, 2026, 4:58 AM CVSS metrics ("CVSSv2 score" set to 4.7) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:C") CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:U/RC:C") CVSSv2 severity (based on CVE-2024-49998, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202607060458
版本 1.17 Jul 2, 2026, 3:38 PM CVSS metrics ("CVSSv2 score" set to none) CVSS metrics ("CVSSv2 vector" set to none) CVSS temporal metrics ("CVSSv2 temporal vector" set to none) CVSSv2 severity (based on CVE-2024-49998, severity increased from "Medium" to "High") CVSSv3 score source (set to "CVE-2024-49998") Detection (updated detection logic) Plugin metadata Plugin Feed: 202607021538
版本 1.16 Jun 30, 2026, 11:58 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202606301158
版本 1.15 Jun 28, 2026, 2:21 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202606281421
版本 1.13 May 14, 2026, 3:47 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605140347
版本 1.12 May 2, 2026, 11:12 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202605022312
版本 1.11 Jan 31, 2026, 11:07 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601311107
版本 1.10 Jan 21, 2026, 10:50 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601211050
版本 1.9 Jan 15, 2026, 2:04 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601151404
版本 1.8 Jan 10, 2026, 7:58 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601101958
版本 1.7 Oct 29, 2025, 3:03 AM Detection (updated detection logic) Plugin Feed: 202510290303
版本 1.6 Oct 27, 2025, 11:56 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:U/RL:U/RC:C") CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:U/RL:U/RC:C") Detection (updated detection logic) Plugin Feed: 202510272356
版本 1.1 Mar 6, 2025, 5:02 PM New Plugin Feed: 202503061702