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THREATINT
PUBLISHED

CVE-2024-49982

aoe: fix the potential use-after-free problem in more places



AssignerLinux
Reserved2024-10-21
Published2024-10-21
Updated2024-10-22

Description

In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in more places For fixing CVE-2023-6270, f98364e92662 ("aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts") makes tx() calling dev_put() instead of doing in aoecmd_cfg_pkts(). It avoids that the tx() runs into use-after-free. Then Nicolai Stange found more places in aoe have potential use-after-free problem with tx(). e.g. revalidate(), aoecmd_ata_rw(), resend(), probe() and aoecmd_cfg_rsp(). Those functions also use aoenet_xmit() to push packet to tx queue. So they should also use dev_hold() to increase the refcnt of skb->dev. On the other hand, moving dev_put() to tx() causes that the refcnt of skb->dev be reduced to a negative value, because corresponding dev_hold() are not called in revalidate(), aoecmd_ata_rw(), resend(), probe(), and aoecmd_cfg_rsp(). This patch fixed this issue.

Product status

Default status
unaffected

faf0b4c5e00b before f63461af2c1a
affected

7dd09fa80b07 before 07b418d50ccb
affected

74ca3ef68d2f before bc2cbf7525ac
affected

eb48680b0255 before acc5103a0a8c
affected

f98364e92662 before 89d9a69ae0c6
affected

f98364e92662 before 8253a60c89ec
affected

f98364e92662 before 6d6e54fc71ad
affected

Default status
affected

6.9
affected

Any version before 6.9
unaffected

5.10.227
unaffected

5.15.168
unaffected

6.1.113
unaffected

6.6.55
unaffected

6.10.14
unaffected

6.11.3
unaffected

6.12-rc2
unaffected

References

https://git.kernel.org/stable/c/f63461af2c1a86af4217910e47a5c46e3372e645

https://git.kernel.org/stable/c/07b418d50ccbbca7e5d87a3a0d41d436cefebf79

https://git.kernel.org/stable/c/bc2cbf7525ac288e07d465f5a1d8cb8fb9599254

https://git.kernel.org/stable/c/acc5103a0a8c200a52af7d732c36a8477436a3d3

https://git.kernel.org/stable/c/89d9a69ae0c667e4d9d028028e2dcc837bae626f

https://git.kernel.org/stable/c/8253a60c89ec35c8f36fb2cc08cdf854c7a3eb58

https://git.kernel.org/stable/c/6d6e54fc71ad1ab0a87047fd9c211e75d86084a3

cve.org CVE-2024-49982

nvd.nist.gov CVE-2024-49982

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