klibc-bot for Tobias Klauser
2020-Mar-28 21:48 UTC
[klibc] [klibc:update-dash] dash: jobs: Don't attempt to access job table for job %0
Commit-ID: 4e8511b9af7387ed958094485407e636cd06dcc8 Gitweb: http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=4e8511b9af7387ed958094485407e636cd06dcc8 Author: Tobias Klauser <tklauser at distanz.ch> AuthorDate: Thu, 10 Dec 2015 08:59:34 +0100 Committer: Ben Hutchings <ben at decadent.org.uk> CommitDate: Sat, 28 Mar 2020 21:42:54 +0000 [klibc] dash: jobs: Don't attempt to access job table for job %0 [ dash commit 16cde63e05519c770daa69345b8cf37fb31eaa2a ] If job %0 is (mistakenly) specified, an out-of-bounds access to the jobtab occurs in function getjob() if num = 0: jp = jobtab + 0 - 1 Fix this by checking that the job number is larger than 0 before accessing the jobtab. Signed-off-by: Tobias Klauser <tklauser at distanz.ch> Signed-off-by: Herbert Xu <herbert at gondor.apana.org.au> Signed-off-by: Ben Hutchings <ben at decadent.org.uk> --- usr/dash/jobs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/usr/dash/jobs.c b/usr/dash/jobs.c index c9b631ac..49c14441 100644 --- a/usr/dash/jobs.c +++ b/usr/dash/jobs.c @@ -698,7 +698,7 @@ check: if (is_number(p)) { num = atoi(p); - if (num <= njobs) { + if (num > 0 && num <= njobs) { jp = jobtab + num - 1; if (jp->used) goto gotit;
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