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PUBLISHED

CVE-2024-27043

media: edia: dvbdev: fix a use-after-free

Reserved:2024-02-19
Published:2024-05-01
Updated:2024-05-13

Description

In the Linux kernel, the following vulnerability has been resolved: media: edia: dvbdev: fix a use-after-free In dvb_register_device, *pdvbdev is set equal to dvbdev, which is freed in several error-handling paths. However, *pdvbdev is not set to NULL after dvbdev's deallocation, causing use-after-frees in many places, for example, in the following call chain: budget_register |-> dvb_dmxdev_init |-> dvb_register_device |-> dvb_dmxdev_release |-> dvb_unregister_device |-> dvb_remove_device |-> dvb_device_put |-> kref_put When calling dvb_unregister_device, dmxdev->dvbdev (i.e. *pdvbdev in dvb_register_device) could point to memory that had been freed in dvb_register_device. Thereafter, this pointer is transferred to kref_put and triggering a use-after-free.

Product status

Default status
unaffected

b61901024776 before d0f5c2833382
affected

b61901024776 before f20c3270f3ed
affected

b61901024776 before 096237039d00
affected

b61901024776 before 0d3fe80b6d17
affected

b61901024776 before 437a111f79a2
affected

b61901024776 before 779e8db7efb2
affected

b61901024776 before 35674111a043
affected

b61901024776 before b7586e902128
affected

b61901024776 before 8c64f4cdf4e6
affected

Default status
affected

2.6.21
affected

Any version before 2.6.21
unaffected

4.19.311
unaffected

5.4.273
unaffected

5.10.214
unaffected

5.15.153
unaffected

6.1.83
unaffected

6.6.23
unaffected

6.7.11
unaffected

6.8.2
unaffected

6.9
unaffected

References

https://git.kernel.org/stable/c/d0f5c28333822f9baa5280d813124920720fd856

https://git.kernel.org/stable/c/f20c3270f3ed5aa6919a87e4de9bf6c05fb57086

https://git.kernel.org/stable/c/096237039d00c839f3e3a5fe6d001bf0db45b644

https://git.kernel.org/stable/c/0d3fe80b6d175c220b3e252efc6c6777e700e98e

https://git.kernel.org/stable/c/437a111f79a2f5b2a5f21e27fdec6f40c8768712

https://git.kernel.org/stable/c/779e8db7efb22316c8581d6c229636d2f5694a62

https://git.kernel.org/stable/c/35674111a043b0482a9bc69da8850a83f465b07d

https://git.kernel.org/stable/c/b7586e902128e4fb7bfbb661cb52e4215a65637b

https://git.kernel.org/stable/c/8c64f4cdf4e6cc5682c52523713af8c39c94e6d5

cve.org CVE-2024-27043

nvd.nist.gov CVE-2024-27043

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