5c0f7d38a6
reverse-24757-use-grant-references.patch - fate#313222 - xenstore-chmod should support 256 permissions 26189-xenstore-chmod.patch - bnc#789945 - VUL-0: CVE-2012-5510: xen: Grant table version switch list corruption vulnerability (XSA-26) CVE-2012-5510-xsa26.patch - bnc#789944 - VUL-0: CVE-2012-5511: xen: Several HVM operations do not validate the range of their inputs (XSA-27) CVE-2012-5511-xsa27.patch - bnc#789951 - VUL-0: CVE-2012-5513: xen: XENMEM_exchange may overwrite hypervisor memory (XSA-29) CVE-2012-5513-xsa29.patch - bnc#789948 - VUL-0: CVE-2012-5514: xen: Missing unlock in guest_physmap_mark_populate_on_demand() (XSA-30) CVE-2012-5514-xsa30.patch - bnc#789950 - VUL-0: CVE-2012-5515: xen: Several memory hypercall operations allow invalid extent order values (XSA-31) CVE-2012-5515-xsa31.patch - bnc#789952 - VUL-0: CVE-2012-5525: xen: Several hypercalls do not validate input GFNs (XSA-32) CVE-2012-5525-xsa32.patch - Upstream patches from Jan 26129-ACPI-BGRT-invalidate.patch 26132-tmem-save-NULL-check.patch 26134-x86-shadow-invlpg-check.patch 26139-cpumap-masking.patch 26148-vcpu-timer-overflow.patch (Replaces CVE-2012-4535-xsa20.patch) OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=219
32 lines
981 B
Diff
32 lines
981 B
Diff
# HG changeset patch
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# User Matthew Daley <mattjd@gmail.com>
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# Date 1352709297 -3600
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# Node ID 286ef4ced2164f4e9bf52fd0c52248182e69a6e6
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# Parent 62885b3c34c84354ead017703a86f0465cb58cf7
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tmem: Prevent NULL dereference on error case
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If the client / pool IDs given to tmemc_save_get_next_page are invalid,
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the calculation of pagesize will dereference NULL.
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Fix this by moving the calculation below the appropriate NULL check.
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Signed-off-by: Matthew Daley <mattjd@gmail.com>
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Committed-by: Jan Beulich <jbeulich@suse.com>
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--- a/xen/common/tmem.c
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+++ b/xen/common/tmem.c
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@@ -2446,10 +2446,12 @@ static NOINLINE int tmemc_save_get_next_
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OID oid;
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int ret = 0;
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struct tmem_handle h;
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- unsigned int pagesize = 1 << (pool->pageshift+12);
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+ unsigned int pagesize;
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if ( pool == NULL || is_ephemeral(pool) )
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return -1;
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+
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+ pagesize = 1 << (pool->pageshift + 12);
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if ( bufsize < pagesize + sizeof(struct tmem_handle) )
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return -ENOMEM;
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