[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Bug#1013299: linux-image-4.19.0-20-amd64: NULL pointer deref in qdisc_put() due to missing backport



On dinsdag 21 juni 2022 11:49:26 CEST you wrote:
> https://lore.kernel.org/all/20190921063607.GA1083276@kroah.com/ is about the
> 4.19.75 release and that contains that change in commit
> 7a1bad565cebfbf6956f9bb36dba734a48fa31d4 titled "net_sched: let qdisc_put()
> accept NULL pointer" which actually modifies the qdisc_destroy function
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/net/sc
> hed/sch_generic.c?h=linux-4.19.y#n1004 OTOH, does indeed not have that NULL
> check.

It's a bit 'above my paygrade', but if qdisk_put() can accept a NULL pointer 
then I'm curious whether that would be allowed for other functions in that file 
as well ... there are several having "struct Qdisc *qdisc" as (only) 
parameter, but only qdisk_put() checks for NULL.
That is also true for the current 'master' branch ...

Attachment: signature.asc
Description: This is a digitally signed message part.


Reply to: