CVE-2023-53219
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved:
media: netup_unidvb: fix use-after-free at del_timer()
When Universal DVB card is detaching, netup_unidvb_dma_fini() uses del_timer() to stop dma->timeout timer. But when timer handler netup_unidvb_dma_timeout() is running, del_timer() could not stop it. As a result, the use-after-free bug could happen. The process is shown below:
(cleanup routine) | (timer routine)
| mod_timer(&dev->tx_sim_timer, ..)
netup_unidvb_finidev() | (wait a time) netup_unidvb_dma_fini() | netup_unidvb_dma_timeout() del_timer(&dma->timeout); | | ndev->pci_dev->dev //USE
Fix by changing del_timer() to del_timer_sync().
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e < dd5c77814f290b353917df329f36de1472d47154 | affected |
| Linux | Linux | 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e < 90229e9ee957d4514425e4a4d82c50ab5d57ac4d | affected |
| Linux | Linux | 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e < 1550bcf2983ae1220cc8ab899a39a423fa7cb523 | affected |
| Linux | Linux | 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e < f9982db735a8495eee14267cf193c806b957e942 | affected |
| Linux | Linux | 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e < 051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3 | affected |
| Linux | Linux | 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e < 07821524f67bf920342bc84ae8b3dea2a315a89e | affected |
| Linux | Linux | 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e < c8f9c05e1ebcc9c7bc211cc8b74d8fb86a8756fc | affected |
| Linux | Linux | 52b1eaf4c59a3bbd07afbb4ab4f43418a807d02e < 0f5bb36bf9b39a2a96e730bf4455095b50713f63 | affected |
| Linux | Linux | 4.3 | affected |
| Linux | Linux | 0 < 4.3 | unaffected |
| Linux | Linux | 4.14.316 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.284 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.244 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.181 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.113 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.30 <= 6.1.* | unaffected |
| Linux | Linux | 6.3.4 <= 6.3.* | unaffected |
| Linux | Linux | 6.4 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://git.kernel.org/stable/c/dd5c77814f290b353917df329f36de1472d47154
- https://git.kernel.org/stable/c/90229e9ee957d4514425e4a4d82c50ab5d57ac4d
- https://git.kernel.org/stable/c/1550bcf2983ae1220cc8ab899a39a423fa7cb523
- https://git.kernel.org/stable/c/f9982db735a8495eee14267cf193c806b957e942
- https://git.kernel.org/stable/c/051af3f0b7d1cd8ab7f3e2523ad8ae1af44caba3
- https://git.kernel.org/stable/c/07821524f67bf920342bc84ae8b3dea2a315a89e
- https://git.kernel.org/stable/c/c8f9c05e1ebcc9c7bc211cc8b74d8fb86a8756fc
- https://git.kernel.org/stable/c/0f5bb36bf9b39a2a96e730bf4455095b50713f63
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