kernel/linux.git/security/integrity/ima/ima_template.c, branch linux-7.0.y

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

ima: Fix misuse of dereference of pointer in template_desc_init_fields()

2022-11-16T16:47:55+00:00

The input parameter @fields is type of struct ima_template_field ***, so when allocates array memory for @fields, the size of element should be sizeof(**field) instead of sizeof(*field). Actually the original code would not cause any runtime error, but it's better to make it logically right. Fixes: adf53a778a0a ("ima: new templates management mechanism") Signed-off-by: Xiu Jianfeng Reviewed-by: Roberto Sassu Signed-off-by: Mimi Zohar

ima: Fix a potential NULL pointer access in ima_restore_measurement_list

2022-11-02T22:41:32+00:00

In restore_template_fmt, when kstrdup fails, a non-NULL value will still be returned, which causes a NULL pointer access in template_desc_init_fields. Fixes: c7d09367702e ("ima: support restoring multiple template formats") Cc: stable@kernel.org Co-developed-by: Jiaming Li Signed-off-by: Jiaming Li Signed-off-by: Huaxin Lu Reviewed-by: Stefan Berger Signed-off-by: Mimi Zohar

ima: define a new template field named 'd-ngv2' and templates

2022-05-05T15:49:13+00:00

In preparation to differentiate between unsigned regular IMA file hashes and fs-verity's file digests in the IMA measurement list, define a new template field named 'd-ngv2'. Also define two new templates named 'ima-ngv2' and 'ima-sigv2', which include the new 'd-ngv2' field. Signed-off-by: Mimi Zohar

ima: Allow template selection with ima_template[_fmt]= after ima_hash=

2022-02-02T16:59:54+00:00

Commit c2426d2ad5027 ("ima: added support for new kernel cmdline parameter ima_template_fmt") introduced an additional check on the ima_template variable to avoid multiple template selection. Unfortunately, ima_template could be also set by the setup function of the ima_hash= parameter, when it calls ima_template_desc_current(). This causes attempts to choose a new template with ima_template= or with ima_template_fmt=, after ima_hash=, to be ignored. Achieve the goal of the commit mentioned with the new static variable template_setup_done, so that template selection requests after ima_hash= are not ignored. Finally, call ima_init_template_list(), if not already done, to initialize the list of templates before lookup_template_desc() is called. Reported-by: Guo Zihua Signed-off-by: Roberto Sassu Cc: stable@vger.kernel.org Fixes: c2426d2ad5027 ("ima: added support for new kernel cmdline parameter ima_template_fmt") Signed-off-by: Mimi Zohar

ima: Set correct casting types

2021-06-08T20:29:10+00:00

The code expects that the values being parsed from a buffer when the ima_canonical_fmt global variable is true are in little endian. Thus, this patch sets the casting types accordingly. Reported-by: kernel test robot Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar

ima: Define new template evm-sig

2021-06-03T14:02:37+00:00

With the recent introduction of the evmsig template field, remote verifiers can obtain the EVM portable signature instead of the IMA signature, to verify file metadata. After introducing the new fields to include file metadata in the measurement list, this patch finally defines the evm-sig template, whose format is: d-ng|n-ng|evmsig|xattrnames|xattrlengths|xattrvalues|iuid|igid|imode xattrnames, xattrlengths and xattrvalues are populated only from defined EVM protected xattrs, i.e. the ones that EVM considers to verify the portable signature. xattrnames and xattrlengths are populated only if the xattr is present. xattrnames and xattrlengths are not necessary for verifying the EVM portable signature, but they are included for completeness of information, if a remote verifier wants to infer more from file metadata. Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar

ima: Define new template fields xattrnames, xattrlengths and xattrvalues

2021-06-02T22:56:13+00:00

This patch defines the new template fields xattrnames, xattrlengths and xattrvalues, which contain respectively a list of xattr names (strings, separated by |), lengths (u32, hex) and values (hex). If an xattr is not present, the name and length are not displayed in the measurement list. Reported-by: kernel test robot (Missing prototype def) Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar

ima: Define new template field imode

2021-06-01T19:17:30+00:00

This patch defines the new template field imode, which includes the inode mode. It can be used by a remote verifier to verify the EVM portable signature, if it was included with the template fields sig or evmsig. Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar